Fieldpiece Sman2 User manual

Quick Start

1 Power on your SMAN by holding the ON/OFF

button for 1 second.

2 Select desired units (English or Metric) by

pressing the UNITS button (SMAN3) or hold-

ing the ENTER button for 1 second (SMAN2).

3 Calibrate temperature and/or pressure as

needed. See calibration sections for more

details.

4 Connect to the system.

5 Pressthecircularbuttontoselectyourdesired

function.

Certiﬁcations

C-Tick (N22675)

RoHS Compliant

Description

Your SMAN is the state-of-the-art portable

digital refrigerant manifold and vacuum gauge

(SMAN3) for A/C and refrigeration service. Your

SMAN combines high pressure manifold gauges,

a superheat/subcooling calculator, micron

gauge for vacuum (SMAN3), and temperature

measurements into one easy-to-use instrument.

Your SMAN calculates and displays target

superheat and actual superheat to ensure

proper charging of a unit. Use your SMAN as a

dual temperature instrument to simultaneously

display two temperatures using any K-type

thermocouple.

Your SMAN is designed to meet the demands

of the HVAC/R technician with a ruggedized

rubber boot for durability, a metal hanger

for easy storage and a high quality nylon

case. A bright blue backlight and very large,

easily viewable display lets you see your

measurements in any work environment. SMAN

has a very intuitive user interface and extremely

long battery life.

Your SMAN comes pre-programmed with the

most accurate P-T charts for the most common

refrigerants in the field so you are always

prepared for any job.

Display

Psig

Kpa

inHg

cmHg

Psig Pressure (pounds/in2)

Kpa Pressure (Kilopascals)

inHg Negative Pressure (inches of mercury)

cmHg NegativePressure (cm of mercury)

SHT1

VSAT

IDWB

°F°C

SH Superheat T1 T1 Direct

VSAT Vapor Saturation Temperature

IDWB Indoor Wet Bulb

Microns

HiLo

SetStable

Alarm

Target SH

°F°C

Stable Micron Reading Has Stabilized

Set Mode Alarm Alarm Mode

Hi High Alarm

oLow Alarm

Microns Vacuum (Microns of Mercury)

Target SH

Target Superheat

Fieldpiece

Digital Manifold &

Vacuum Gauge

OPERATOR'S MANUAL

Models SMAN2 SMAN3

Psig

Kpa

inHg

cmHg

Psig Pressure (pounds/in2)

Kpa Pressure (Kilopascals)

inHg Negative Pressure (inches of mercury)

cmHg NegativePressure (cm of mercury)

ODDB

HH:MM:SS

SCT2

LSAT

°F°C

SC Subcooling

T2 T2 Direct

LSAT Liquid Saturation Temperature

ODDB Outdoor Dry Bulb

Vacuum Stopwatch

HH:MM:SS Hours:Minutes or Minutes:Seconds

HH:M

APO

R-

Battery Life

APO Auto Power O Enabled

R-

Selected Refrigerant of System

Controls

Cont

Atmospheric

Pressure

Refrigeran

1 Insert K-type thermocouple plugs here.

2 Temperature calibration pots.

3 Press to zero atmospheric pressure.

4 Press tolinear adjust pressurecurve.(See

Advanced Pressure Calibration section.)

5 Press toengage backlight.Holdwhen

powering on to toggle Auto Power O.

6 Press/hold to cycle through refrigerants.

7 Hold 1 second to toggle power on/o.

8 Press up or down arrow to adjust values.

9 Press to confirm selection. For the

SMAN2, hold 1 second to adjust units.

10 Hold to enter alarm setup mode. (SMAN3)

11 Press to toggle through temperature tests.

Hold to auto-toggle.

12 Press to adjust units. (SMAN3)

13 Turn clockwise to close Low side port.

14 Turn clockwise to close High side port.

Functions

Standard Pressure

1 Connect your SMAN to the system using EPA approved 1/4in

refrigerant hoses.

2 Read pressures directly from the upper display.

Superheat and Subcooling

1 Press circular button to cycle through temperature modes until

SH and SC are shown. While the SMAN can show superheat and

subcooling simultaneously, most technicians will only measure

one, depending on the system.

2 Choose the appropriate refrigerant using the REFRIGERANT

button.

3 Connect the K-type thermocouple and EPA approved refrigerant

hoses to your SMAN.

4 Connect your SMAN to the system:

Superheat: Hand tighten low side hose to suction line service

port. Place the thermocouple on the suction line between the

evaporator and compressor, no closer than 6 inches to compressor.

Subcooling: Hand tighten high side hose to liquid line service

port. Place the thermocouple on the liquid line between the

condenser and expansion valve (TXV), as close to the service port

as possible.

5 For reliable readings you must let the system run continuously for

15 minutes to stabilize.

6 Add or remove refrigerant using the low and high side valves as

needed. If adding or removing refrigerant, let the system stabilize

again for 15 minutes before reading the measurement.

T1 T2 Direct

1 Press circular button until T1 andT2 are shown.

2 Plug in any K-type thermocouple into T1 and/or T2.

3 Read the temperature directly from the display.

Saturation

Shows vapor (VSAT) and liquid saturation (LSAT) temperatures,

based on the pressures measured and the refrigerant selected.

Target Superheat

1 Press circular button until Target SH is shown.

2 Plug the ATWB1 Wet bulb K-type thermocouple intoT1 and ATA1

Dry bulb K-type thermocouple into T2.

3 Use the arrow buttons to select which temperature you want to

measure rst. A blinking value means the SMAN is displaying the

real-time temperature.

4 For IDWB, wet the sock of the ATWB1. Clip it to the front of

the evaporator coil or lter. When the wet bulb temperature

reaches its lowest point and stabilizes. ENTER locks the reading.

"OL" will show if reading outside wet bulb charts. Re-take the

measurement.

5 For ODDB, clip the ATA1 thermocouple to the side of the

condenser. Once reading is stable, press ENTER. "OL" will show if

reading outside dry bulb charts. Re-take the measurement. For

best results, keep the ATA1 away from direct sunlight.

6 Once both IDWB and ODDB are set, the Target Superheat will

display in the lower left corner of the display. If the inputted IDWB

and ODDB temperatures indicate theTarget Superheat is negative,

"OL" will display in the lower left corner.

7 To change either IDWB or ODDB, press the UP/DOWN arrow button

until the label (IDWB or ODDB) you wish to change is blinking.

Press ENTER and the value will begin to blink. Re-take the

measurement and press ENTER to lock in the new measurement.

The newly calculated Target Superheat will be displayed in the

lower left corner.

8 To clear both IDWB and ODDB at the same time, press the ENTER

button.This will only work when a Target Superheat or "OL" is

displayed in the lower left corner.

Pulling a Vacuum (model SMAN3)

Follow all manufacturers’ evacuation

procedures over those in this manual.

Note: larger systems may take much longer to

reach a deep vacuum and a dierent evacuation

method or equipment might be preferred.

1 Connect your SMAN3 inline between your vacuum pump and the

system, then power on your SMAN3.

2 Draw a vacuum on the system. The SMAN will automatically

sense the negative pressure and display the vacuum in microns of

mercury. Indicators for increasing or decreasing pressure will be

shown.

3 Press Alarm button to toggle between the High (Hi) alarm, the

Low (Lo) alarm and no alarm. (No display for no alarm.)

(Note: The stopwatch will start when an alarm is selected.

Pressing Alarm will reset the stopwatch.)

4 When the rate of change in pressure is zero or near zero, Stable

will appear in the lower left corner of the display.

Additional Tips:

In order to achieve a deep vacuum as quickly as possible the

following practices are suggested.

1 Use the shortest hoses with the largest diameter available.

2 Remove Schrader cores and core depressors. Core removal tools

like the "MegaFlow Valve Core RemovalTool" can be purchased to

help with this process.

3 Inspect the rubber seals at both ends of your hoses for damage

that may result in leakage.

4 Do not use hoses with low loss ttings when evacuating or

pulling a vacuum on a system.

Set Vacuum Alarms (SMAN3)

1 Hold the Alarm button for one second to enter Alarm Set mode.

2 Press the Alarm button to toggle between Alarm Hi and Lo.

3 Use arrow buttons to adjust each alarm value.

4 Press ENTER to lock both alarms in.

T1 T2

Atmospheric

Pressure

Superheat

Subcooling

T1 T2 Direct Saturation

Target

Superheat

CAL CAL

Tes t

Pressure

AUTO

OFF

Refrigerant ON/OFF

Enter

Units

Alarm

Digital Manifold + Vacuum Gauge

SMAN3

ODDB

HH:MM:SS

Psig

Kpa

inHg

cmHg

Psig

Kpa

inHg

cmHg

SHT1

VSAT

APO

Microns

HiLo

SetStable

Alarm

IDWB

Target SH

R-

°F°C

SCT2

LSAT

°F°C

1110 12

Quick Start

1 Power on your SMAN by holding the ON/OFF

button for 1 second.

2 Select desired units (English or Metric) by

pressing the UNITS button (SMAN3) or hold-

ing the ENTER button for 1 second (SMAN2).

3 Calibrate temperature and/or pressure as

needed. See calibration sections for more

details.

4 Connect to the system.

5 Pressthecircularbuttontoselect yourdesired

function.

Certiﬁcations

C-Tick (N22675)

RoHS Compliant

Description

Your SMAN is the state-of-the-art portable

digital refrigerant manifold and vacuum gauge

(SMAN3) for A/C and refrigeration service. Your

SMAN combines high pressure manifold gauges,

a superheat/subcooling calculator, micron

gauge for vacuum (SMAN3), and temperature

measurements into one easy-to-use instrument.

Your SMAN calculates and displays target

superheat and actual superheat to ensure

proper charging of a unit. Use your SMAN as a

dual temperature instrument to simultaneously

display two temperatures using any K-type

thermocouple.

Your SMAN is designed to meet the demands

of the HVAC/R technician with a ruggedized

rubber boot for durability, a metal hanger

for easy storage and a high quality nylon

case. A bright blue backlight and very large,

easily viewable display lets you see your

measurements in any work environment. SMAN

has a very intuitive user interface and extremely

long battery life.

Your SMAN comes pre-programmed with the

most accurate P-T charts for the most common

refrigerants in the field so you are always

prepared for any job.

Display

Psig

Kpa

inHg

cmHg

Psig Pressure (pounds/in2)

Kpa Pressure (Kilopascals)

inHg Negative Pressure (inches of mercury)

cmHg NegativePressure (cm of mercury)

SHT1

VSAT

IDWB

°F°C

SH Superheat T1 T1 Direct

VSAT Vapor Saturation Temperature

IDWB Indoor Wet Bulb

Microns

HiLo

SetStable

Alarm

Target SH

°F°C

Stable Micron Reading Has Stabilized

Set Mode Alarm Alarm Mode

Hi High Alarm

oLow Alarm

Microns Vacuum (Microns of Mercury)

Target SH

Target Superheat

Fieldpiece

Digital Manifold &

Vacuum Gauge

OPERATOR'S MANUAL

Models SMAN2 SMAN3

Psig

Kpa

inHg

cmHg

Psig Pressure (pounds/in2)

Kpa Pressure (Kilopascals)

inHg Negative Pressure (inches of mercury)

cmHg NegativePressure (cm of mercury)

ODDB

HH:MM:SS

SCT2

LSAT

°F°C

SC Subcooling

T2 T2 Direct

LSAT Liquid Saturation Temperature

ODDB Outdoor Dry Bulb

Vacuum Stopwatch

HH:MM:SS Hours:Minutes or Minutes:Seconds

HH:M

APO

R-

Battery Life

APO Auto Power O Enabled

R-

Selected Refrigerant of System

Controls

Cont

Atmospheric

Pressure

Refrigeran

1 Insert K-type thermocouple plugs here.

2 Temperature calibration pots.

3 Press to zero atmospheric pressure.

4 Presstolinearadjustpressurecurve.(See

Advanced Pressure Calibration section.)

5 Presstoengagebacklight.Holdwhen

powering on to toggle Auto Power O.

6 Press/hold to cycle through refrigerants.

7 Hold 1 second to toggle power on/o.

8 Press up or down arrow to adjust values.

9 Press to confirm selection. For the

SMAN2, hold 1 second to adjust units.

10 Hold to enter alarm setup mode. (SMAN3)

11 Press to toggle through temperature tests.

Hold to auto-toggle.

12 Press to adjust units. (SMAN3)

13 Turn clockwise to close Low side port.

14 Turn clockwise to close High side port.

Functions

Standard Pressure

1 Connect your SMAN to the system using EPA approved 1/4in

refrigerant hoses.

2 Read pressures directly from the upper display.

Superheat and Subcooling

1 Press circular button to cycle through temperature modes until

SH and SC are shown. While the SMAN can show superheat and

subcooling simultaneously, most technicians will only measure

one, depending on the system.

2 Choose the appropriate refrigerant using the REFRIGERANT

button.

3 Connect the K-type thermocouple and EPA approved refrigerant

hoses to your SMAN.

4 Connect your SMAN to the system:

Superheat: Hand tighten low side hose to suction line service

port. Place the thermocouple on the suction line between the

evaporator and compressor, no closer than 6 inches to compressor.

Subcooling: Hand tighten high side hose to liquid line service

port. Place the thermocouple on the liquid line between the

condenser and expansion valve (TXV), as close to the service port

as possible.

5 For reliable readings you must let the system run continuously for

15 minutes to stabilize.

6 Add or remove refrigerant using the low and high side valves as

needed. If adding or removing refrigerant, let the system stabilize

again for 15 minutes before reading the measurement.

T1 T2 Direct

1 Press circular button until T1 and T2 are shown.

2 Plug in any K-type thermocouple into T1 and/or T2.

3 Read the temperature directly from the display.

Saturation

Shows vapor (VSAT) and liquid saturation (LSAT) temperatures,

based on the pressures measured and the refrigerant selected.

Target Superheat

1 Press circular button until Target SH is shown.

2 Plug the ATWB1 Wet bulb K-type thermocouple into T1 and ATA1

Dry bulb K-type thermocouple into T2.

3 Use the arrow buttons to select which temperature you want to

measure rst. A blinking value means the SMAN is displaying the

real-time temperature.

4 For IDWB, wet the sock of the ATWB1. Clip it to the front of

the evaporator coil or lter. When the wet bulb temperature

reaches its lowest point and stabilizes. ENTER locks the reading.

"OL" will show if reading outside wet bulb charts. Re-take the

measurement.

5 For ODDB, clip the ATA1 thermocouple to the side of the

condenser. Once reading is stable, press ENTER. "OL" will show if

reading outside dry bulb charts. Re-take the measurement. For

best results, keep the ATA1 away from direct sunlight.

6 Once both IDWB and ODDB are set, the Target Superheat will

display in the lower left corner of the display. If the inputted IDWB

and ODDB temperatures indicate theTarget Superheat is negative,

"OL" will display in the lower left corner.

7 To change either IDWB or ODDB, press the UP/DOWN arrow button

until the label (IDWB or ODDB) you wish to change is blinking.

Press ENTER and the value will begin to blink. Re-take the

measurement and press ENTER to lock in the new measurement.

The newly calculated Target Superheat will be displayed in the

lower left corner.

8 To clear both IDWB and ODDB at the same time, press the ENTER

button.This will only work when a Target Superheat or "OL" is

displayed in the lower left corner.

Pulling a Vacuum (model SMAN3)

Follow all manufacturers’ evacuation

procedures over those in this manual.

Note: larger systems may take much longer to

reach a deep vacuum and a dierent evacuation

method or equipment might be preferred.

1 Connect your SMAN3 inline between your vacuum pump and the

system, then power on your SMAN3.

2 Draw a vacuum on the system.The SMAN will automatically

sense the negative pressure and display the vacuum in microns of

mercury. Indicators for increasing or decreasing pressure will be

shown.

3 Press Alarm button to toggle between the High (Hi) alarm, the

Low (Lo) alarm and no alarm. (No display for no alarm.)

(Note: The stopwatch will start when an alarm is selected.

Pressing Alarm will reset the stopwatch.)

4 When the rate of change in pressure is zero or near zero, Stable

will appear in the lower left corner of the display.

Additional Tips:

In order to achieve a deep vacuum as quickly as possible the

following practices are suggested.

1 Use the shortest hoses with the largest diameter available.

2 Remove Schrader cores and core depressors. Core removal tools

like the "MegaFlow Valve Core RemovalTool" can be purchased to

help with this process.

3 Inspect the rubber seals at both ends of your hoses for damage

that may result in leakage.

4 Do not use hoses with low loss ttings when evacuating or

pulling a vacuum on a system.

Set Vacuum Alarms (SMAN3)

1 Hold the Alarm button for one second to enter Alarm Set mode.

2 Press the Alarm button to toggle between Alarm Hi and Lo.

3 Use arrow buttons to adjust each alarm value.

4 Press ENTER to lock both alarms in.

T1 T2

Atmospheric

Pressure

Superheat

Subcooling

T1 T2 Direct Saturation

Target

Superheat

CAL CAL

Tes t

Pressure

AUTO

OFF

Refrigerant ON/OFF

Enter

Units

Alarm

Digital Manifold + Vacuum Gauge

SMAN3

ODDB

HH:MM:SS

Psig

Kpa

inHg

cmHg

Psig

Kpa

inHg

cmHg

SHT1

VSAT

APO

Microns

HiLo

SetStable

Alarm

IDWB

Target SH

R-

°F°C

SCT2

LSAT

°F°C

1110 12

Quick Start

1 Power on your SMAN by holding the ON/OFF

button for 1 second.

2 Select desired units (English or Metric) by

pressing the UNITS button (SMAN3) or hold-

ing the ENTER button for 1 second (SMAN2).

3 Calibrate temperature and/or pressure as

needed. See calibration sections for more

details.

4 Connect to the system.

5 Pressthecircularbuttontoselect yourdesired

function.

Certiﬁcations

C-Tick (N22675)

RoHS Compliant

Description

Your SMAN is the state-of-the-art portable

digital refrigerant manifold and vacuum gauge

(SMAN3) for A/C and refrigeration service. Your

SMAN combines high pressure manifold gauges,

a superheat/subcooling calculator, micron

gauge for vacuum (SMAN3), and temperature

measurements into one easy-to-use instrument.

Your SMAN calculates and displays target

superheat and actual superheat to ensure

proper charging of a unit. Use your SMAN as a

dual temperature instrument to simultaneously

display two temperatures using any K-type

thermocouple.

Your SMAN is designed to meet the demands

of the HVAC/R technician with a ruggedized

rubber boot for durability, a metal hanger

for easy storage and a high quality nylon

case. A bright blue backlight and very large,

easily viewable display lets you see your

measurements in any work environment. SMAN

has a very intuitive user interface and extremely

long battery life.

Your SMAN comes pre-programmed with the

most accurate P-T charts for the most common

refrigerants in the field so you are always

prepared for any job.

Display

Psig

Kpa

inHg

cmHg

Psig Pressure (pounds/in2)

Kpa Pressure (Kilopascals)

inHg Negative Pressure (inches of mercury)

cmHg NegativePressure (cm of mercury)

SHT1

VSAT

IDWB

°F°C

SH Superheat T1 T1 Direct

VSAT Vapor Saturation Temperature

IDWB Indoor Wet Bulb

Microns

HiLo

SetStable

Alarm

Target SH

°F°C

Stable Micron Reading Has Stabilized

Set Mode Alarm Alarm Mode

Hi High Alarm

oLow Alarm

Microns Vacuum (Microns of Mercury)

Target SH

Target Superheat

Fieldpiece

Digital Manifold &

Vacuum Gauge

OPERATOR'S MANUAL

Models SMAN2 SMAN3

Psig

Kpa

inHg

cmHg

Psig Pressure (pounds/in2)

Kpa Pressure (Kilopascals)

inHg Negative Pressure (inches of mercury)

cmHg NegativePressure (cm of mercury)

ODDB

HH:MM:SS

SCT2

LSAT

°F°C

SC Subcooling

T2 T2 Direct

LSAT Liquid Saturation Temperature

ODDB Outdoor Dry Bulb

Vacuum Stopwatch

HH:MM:SS Hours:Minutes or Minutes:Seconds

HH:M

APO

R-

Battery Life

APO Auto Power O Enabled

R-

Selected Refrigerant of System

Controls

Cont

Atmospheric

Pressure

Refrigeran

1 Insert K-type thermocouple plugs here.

2 Temperature calibration pots.

3 Press to zero atmospheric pressure.

4 Pressto linearadjustpressurecurve.(See

Advanced Pressure Calibration section.)

5 Pressto engagebacklight. Hold when

powering on to toggle Auto Power O.

6 Press/hold to cycle through refrigerants.

7 Hold 1 second to toggle power on/o.

8 Press up or down arrow to adjust values.

9 Press to confirm selection. For the

SMAN2, hold 1 second to adjust units.

10 Hold to enter alarm setup mode. (SMAN3)

11 Press to toggle through temperature tests.

Hold to auto-toggle.

12 Press to adjust units. (SMAN3)

13 Turn clockwise to close Low side port.

14 Turn clockwise to close High side port.

Functions

Standard Pressure

1 Connect your SMAN to the system using EPA approved 1/4in

refrigerant hoses.

2 Read pressures directly from the upper display.

Superheat and Subcooling

1 Press circular button to cycle through temperature modes until

SH and SC are shown. While the SMAN can show superheat and

subcooling simultaneously, most technicians will only measure

one, depending on the system.

2 Choose the appropriate refrigerant using the REFRIGERANT

button.

3 Connect the K-type thermocouple and EPA approved refrigerant

hoses to your SMAN.

4 Connect your SMAN to the system:

Superheat: Hand tighten low side hose to suction line service

port. Place the thermocouple on the suction line between the

evaporator and compressor, no closer than 6 inches to compressor.

Subcooling: Hand tighten high side hose to liquid line service

port. Place the thermocouple on the liquid line between the

condenser and expansion valve (TXV), as close to the service port

as possible.

5 For reliable readings you must let the system run continuously for

15 minutes to stabilize.

6 Add or remove refrigerant using the low and high side valves as

needed. If adding or removing refrigerant, let the system stabilize

again for 15 minutes before reading the measurement.

T1 T2 Direct

1 Press circular button until T1 and T2 are shown.

2 Plug in any K-type thermocouple into T1 and/orT2.

3 Read the temperature directly from the display.

Saturation

Shows vapor (VSAT) and liquid saturation (LSAT) temperatures,

based on the pressures measured and the refrigerant selected.

Target Superheat

1 Press circular button until Target SH is shown.

2 Plug the ATWB1 Wet bulb K-type thermocouple intoT1 and ATA1

Dry bulb K-type thermocouple into T2.

3 Use the arrow buttons to select which temperature you want to

measure rst. A blinking value means the SMAN is displaying the

real-time temperature.

4 For IDWB, wet the sock of the ATWB1. Clip it to the front of

the evaporator coil or lter. When the wet bulb temperature

reaches its lowest point and stabilizes. ENTER locks the reading.

"OL" will show if reading outside wet bulb charts. Re-take the

measurement.

5 For ODDB, clip the ATA1 thermocouple to the side of the

condenser. Once reading is stable, press ENTER. "OL" will show if

reading outside dry bulb charts. Re-take the measurement. For

best results, keep the ATA1 away from direct sunlight.

6 Once both IDWB and ODDB are set, theTarget Superheat will

display in the lower left corner of the display. If the inputted IDWB

and ODDB temperatures indicate theTarget Superheat is negative,

"OL" will display in the lower left corner.

7 To change either IDWB or ODDB, press the UP/DOWN arrow button

until the label (IDWB or ODDB) you wish to change is blinking.

Press ENTER and the value will begin to blink. Re-take the

measurement and press ENTER to lock in the new measurement.

The newly calculated Target Superheat will be displayed in the

lower left corner.

8 To clear both IDWB and ODDB at the same time, press the ENTER

button.This will only work when a Target Superheat or "OL" is

displayed in the lower left corner.

Pulling a Vacuum (model SMAN3)

Follow all manufacturers’ evacuation

procedures over those in this manual.

Note: larger systems may take much longer to

reach a deep vacuum and a dierent evacuation

method or equipment might be preferred.

1 Connect your SMAN3 inline between your vacuum pump and the

system, then power on your SMAN3.

2 Draw a vacuum on the system.The SMAN will automatically

sense the negative pressure and display the vacuum in microns of

mercury. Indicators for increasing or decreasing pressure will be

shown.

3 Press Alarm button to toggle between the High (Hi) alarm, the

Low (Lo) alarm and no alarm. (No display for no alarm.)

(Note: The stopwatch will start when an alarm is selected.

Pressing Alarm will reset the stopwatch.)

4 When the rate of change in pressure is zero or near zero, Stable

will appear in the lower left corner of the display.

Additional Tips:

In order to achieve a deep vacuum as quickly as possible the

following practices are suggested.

1 Use the shortest hoses with the largest diameter available.

2 Remove Schrader cores and core depressors. Core removal tools

like the "MegaFlow Valve Core RemovalTool" can be purchased to

help with this process.

3 Inspect the rubber seals at both ends of your hoses for damage

that may result in leakage.

4 Do not use hoses with low loss ttings when evacuating or

pulling a vacuum on a system.

Set Vacuum Alarms (SMAN3)

1 Hold the Alarm button for one second to enter Alarm Set mode.

2 Press the Alarm button to toggle between Alarm Hi and Lo.

3 Use arrow buttons to adjust each alarm value.

4 Press ENTER to lock both alarms in.

T1 T2

Atmospheric

Pressure

Superheat

Subcooling

T1 T2 Direct Saturation

Target

Superheat

CAL CAL

Tes t

Pressure

AUTO

OFF

Refrigerant ON/OFF

Enter

Units

Alarm

Digital Manifold + Vacuum Gauge

SMAN3

ODDB

HH:MM:SS

Psig

Kpa

inHg

cmHg

Psig

Kpa

inHg

cmHg

SHT1

VSAT

APO

Microns

HiLo

SetStable

Alarm

IDWB

Target SH

R-

°F°C

SCT2

LSAT

°F°C

1110 12

Quick Start

1 Power on your SMAN by holding the ON/OFF

button for 1 second.

2 Select desired units (English or Metric) by

pressing the UNITS button (SMAN3) or hold-

ing the ENTER button for 1 second (SMAN2).

3 Calibrate temperature and/or pressure as

needed. See calibration sections for more

details.

4 Connect to the system.

5 Pressthecircularbuttontoselectyourdesired

function.

Certiﬁcations

C-Tick (N22675)

RoHS Compliant

Description

Your SMAN is the state-of-the-art portable

digital refrigerant manifold and vacuum gauge

(SMAN3) for A/C and refrigeration service. Your

SMAN combines high pressure manifold gauges,

a superheat/subcooling calculator, micron

gauge for vacuum (SMAN3), and temperature

measurements into one easy-to-use instrument.

Your SMAN calculates and displays target

superheat and actual superheat to ensure

proper charging of a unit. Use your SMAN as a

dual temperature instrument to simultaneously

display two temperatures using any K-type

thermocouple.

Your SMAN is designed to meet the demands

of the HVAC/R technician with a ruggedized

rubber boot for durability, a metal hanger

for easy storage and a high quality nylon

case. A bright blue backlight and very large,

easily viewable display lets you see your

measurements in any work environment. SMAN

has a very intuitive user interface and extremely

long battery life.

Your SMAN comes pre-programmed with the

most accurate P-T charts for the most common

refrigerants in the field so you are always

prepared for any job.

Display

Psig

Kpa

inHg

cmHg

Psig Pressure (pounds/in2)

Kpa Pressure (Kilopascals)

inHg Negative Pressure (inches of mercury)

cmHg NegativePressure (cm of mercury)

SHT1

VSAT

IDWB

°F°C

SH Superheat T1 T1 Direct

VSAT Vapor Saturation Temperature

IDWB Indoor Wet Bulb

Microns

HiLo

SetStable

Alarm

Target SH

°F°C

Stable Micron Reading Has Stabilized

Set Mode Alarm Alarm Mode

Hi High Alarm

oLow Alarm

Microns Vacuum (Microns of Mercury)

Target SH

Target Superheat

Fieldpiece

Digital Manifold &

Vacuum Gauge

OPERATOR'S MANUAL

Models SMAN2 SMAN3

Psig

Kpa

inHg

cmHg

Psig Pressure (pounds/in2)

Kpa Pressure (Kilopascals)

inHg Negative Pressure (inches of mercury)

cmHg NegativePressure (cm of mercury)

ODDB

HH:MM:SS

SCT2

LSAT

°F°C

SC Subcooling

T2 T2 Direct

LSAT Liquid Saturation Temperature

ODDB Outdoor Dry Bulb

Vacuum Stopwatch

HH:MM:SS Hours:Minutes or Minutes:Seconds

HH:M

APO

R-

Battery Life

APO Auto Power O Enabled

R-

Selected Refrigerant of System

Controls

Cont

Atmospheric

Pressure

Refrigeran

1 Insert K-type thermocouple plugs here.

2 Temperature calibration pots.

3 Press to zero atmospheric pressure.

4 Presstolinearadjustpressurecurve.(See

Advanced Pressure Calibration section.)

5 Presstoengagebacklight.Holdwhen

powering on to toggle Auto Power O.

6 Press/hold to cycle through refrigerants.

7 Hold 1 second to toggle power on/o.

8 Press up or down arrow to adjust values.

9 Press to confirm selection. For the

SMAN2, hold 1 second to adjust units.

10 Hold to enter alarm setup mode. (SMAN3)

11 Press to toggle through temperature tests.

Hold to auto-toggle.

12 Press to adjust units. (SMAN3)

13 Turn clockwise to close Low side port.

14 Turn clockwise to close High side port.

Functions

Standard Pressure

1 Connect your SMAN to the system using EPA approved 1/4in

refrigerant hoses.

2 Read pressures directly from the upper display.

Superheat and Subcooling

1 Press circular button to cycle through temperature modes until

SH and SC are shown. While the SMAN can show superheat and

subcooling simultaneously, most technicians will only measure

one, depending on the system.

2 Choose the appropriate refrigerant using the REFRIGERANT

button.

3 Connect the K-type thermocouple and EPA approved refrigerant

hoses to your SMAN.

4 Connect your SMAN to the system:

Superheat: Hand tighten low side hose to suction line service

port. Place the thermocouple on the suction line between the

evaporator and compressor, no closer than 6 inches to compressor.

Subcooling: Hand tighten high side hose to liquid line service

port. Place the thermocouple on the liquid line between the

condenser and expansion valve (TXV), as close to the service port

as possible.

5 For reliable readings you must let the system run continuously for

15 minutes to stabilize.

6 Add or remove refrigerant using the low and high side valves as

needed. If adding or removing refrigerant, let the system stabilize

again for 15 minutes before reading the measurement.

T1 T2 Direct

1 Press circular button untilT1 and T2 are shown.

2 Plug in any K-type thermocouple into T1 and/or T2.

3 Read the temperature directly from the display.

Saturation

Shows vapor (VSAT) and liquid saturation (LSAT) temperatures,

based on the pressures measured and the refrigerant selected.

Target Superheat

1 Press circular button untilTarget SH is shown.

2 Plug the ATWB1 Wet bulb K-type thermocouple intoT1 and ATA1

Dry bulb K-type thermocouple into T2.

3 Use the arrow buttons to select which temperature you want to

measure rst. A blinking value means the SMAN is displaying the

real-time temperature.

4 For IDWB, wet the sock of the ATWB1. Clip it to the front of

the evaporator coil or lter. When the wet bulb temperature

reaches its lowest point and stabilizes. ENTER locks the reading.

"OL" will show if reading outside wet bulb charts. Re-take the

measurement.

5 For ODDB, clip the ATA1 thermocouple to the side of the

condenser. Once reading is stable, press ENTER. "OL" will show if

reading outside dry bulb charts. Re-take the measurement. For

best results, keep the ATA1 away from direct sunlight.

6 Once both IDWB and ODDB are set, the Target Superheat will

display in the lower left corner of the display. If the inputted IDWB

and ODDB temperatures indicate theTarget Superheat is negative,

"OL" will display in the lower left corner.

7 To change either IDWB or ODDB, press the UP/DOWN arrow button

until the label (IDWB or ODDB) you wish to change is blinking.

Press ENTER and the value will begin to blink. Re-take the

measurement and press ENTER to lock in the new measurement.

The newly calculated Target Superheat will be displayed in the

lower left corner.

8 To clear both IDWB and ODDB at the same time, press the ENTER

button.This will only work when a Target Superheat or "OL" is

displayed in the lower left corner.

Pulling a Vacuum (model SMAN3)

Follow all manufacturers’ evacuation

procedures over those in this manual.

Note: larger systems may take much longer to

reach a deep vacuum and a dierent evacuation

method or equipment might be preferred.

1 Connect your SMAN3 inline between your vacuum pump and the

system, then power on your SMAN3.

2 Draw a vacuum on the system. The SMAN will automatically

sense the negative pressure and display the vacuum in microns of

mercury. Indicators for increasing or decreasing pressure will be

shown.

3 Press Alarm button to toggle between the High (Hi) alarm, the

Low (Lo) alarm and no alarm. (No display for no alarm.)

(Note: The stopwatch will start when an alarm is selected.

Pressing Alarm will reset the stopwatch.)

4 When the rate of change in pressure is zero or near zero, Stable

will appear in the lower left corner of the display.

Additional Tips:

In order to achieve a deep vacuum as quickly as possible the

following practices are suggested.

1 Use the shortest hoses with the largest diameter available.

2 Remove Schrader cores and core depressors. Core removal tools

like the "MegaFlow Valve Core RemovalTool" can be purchased to

help with this process.

3 Inspect the rubber seals at both ends of your hoses for damage

that may result in leakage.

4 Do not use hoses with low loss ttings when evacuating or

pulling a vacuum on a system.

Set Vacuum Alarms (SMAN3)

1 Hold the Alarm button for one second to enter Alarm Set mode.

2 Press the Alarm button to toggle between Alarm Hi and Lo.

3 Use arrow buttons to adjust each alarm value.

4 Press ENTER to lock both alarms in.

T1 T2

Atmospheric

Pressure

Superheat

Subcooling

T1 T2 Direct Saturation

Target

Superheat

CAL CAL

Tes t

Pressure

AUTO

OFF

Refrigerant ON/OFF

Enter

Units

Alarm

Digital Manifold + Vacuum Gauge

SMAN3

ODDB

HH:MM:SS

Psig

Kpa

inHg

cmHg

Psig

Kpa

inHg

cmHg

SHT1

VSAT

APO

Microns

HiLo

SetStable

Alarm

IDWB

Target SH

R-

°F°C

SCT2

LSAT

°F°C

1110 12

Quick Start

1 Power on your SMAN by holding the ON/OFF

button for 1 second.

2 Select desired units (English or Metric) by

pressing the UNITS button (SMAN3) or hold-

ing the ENTER button for 1 second (SMAN2).

3 Calibrate temperature and/or pressure as

needed. See calibration sections for more

details.

4 Connect to the system.

5 Pressthecircularbuttontoselectyourdesired

function.

Certiﬁcations

C-Tick (N22675)

RoHS Compliant

Description

Your SMAN is the state-of-the-art portable

digital refrigerant manifold and vacuum gauge

(SMAN3) for A/C and refrigeration service. Your

SMAN combines high pressure manifold gauges,

a superheat/subcooling calculator, micron

gauge for vacuum (SMAN3), and temperature

measurements into one easy-to-use instrument.

Your SMAN calculates and displays target

superheat and actual superheat to ensure

proper charging of a unit. Use your SMAN as a

dual temperature instrument to simultaneously

display two temperatures using any K-type

thermocouple.

Your SMAN is designed to meet the demands

of the HVAC/R technician with a ruggedized

rubber boot for durability, a metal hanger

for easy storage and a high quality nylon

case. A bright blue backlight and very large,

easily viewable display lets you see your

measurements in any work environment. SMAN

has a very intuitive user interface and extremely

long battery life.

Your SMAN comes pre-programmed with the

most accurate P-T charts for the most common

refrigerants in the field so you are always

prepared for any job.

Display

Psig

Kpa

inHg

cmHg

Psig Pressure (pounds/in2)

Kpa Pressure (Kilopascals)

inHg Negative Pressure (inches of mercury)

cmHg NegativePressure (cm of mercury)

SHT1

VSAT

IDWB

°F°C

SH Superheat T1 T1 Direct

VSAT Vapor Saturation Temperature

IDWB Indoor Wet Bulb

Microns

HiLo

SetStable

Alarm

Target SH

°F°C

Stable Micron Reading Has Stabilized

Set Mode Alarm Alarm Mode

Hi High Alarm

oLow Alarm

Microns Vacuum (Microns of Mercury)

Target SH

Target Superheat

Fieldpiece

Digital Manifold &

Vacuum Gauge

OPERATOR'S MANUAL

Models SMAN2 SMAN3

Psig

Kpa

inHg

cmHg

Psig Pressure (pounds/in2)

Kpa Pressure (Kilopascals)

inHg Negative Pressure (inches of mercury)

cmHg NegativePressure (cm of mercury)

ODDB

HH:MM:SS

SCT2

LSAT

°F°C

SC Subcooling

T2 T2 Direct

LSAT Liquid Saturation Temperature

ODDB Outdoor Dry Bulb

Vacuum Stopwatch

HH:MM:SS Hours:Minutes or Minutes:Seconds

HH:M

APO

R-

Battery Life

APO Auto Power O Enabled

R-

Selected Refrigerant of System

Controls

Cont

Atmospheric

Pressure

Refrigeran

1 Insert K-type thermocouple plugs here.

2 Temperature calibration pots.

3 Press to zero atmospheric pressure.

4 Presstolinearadjustpressurecurve.(See

Advanced Pressure Calibration section.)

5 Presstoengagebacklight.Holdwhen

powering on to toggle Auto Power O.

6 Press/hold to cycle through refrigerants.

7 Hold 1 second to toggle power on/o.

8 Press up or down arrow to adjust values.

9 Press to confirm selection. For the

SMAN2, hold 1 second to adjust units.

10 Hold to enter alarm setup mode. (SMAN3)

11 Press to toggle through temperature tests.

Hold to auto-toggle.

12 Press to adjust units. (SMAN3)

13 Turn clockwise to close Low side port.

14 Turn clockwise to close High side port.

Functions

Standard Pressure

1 Connect your SMAN to the system using EPA approved 1/4in

refrigerant hoses.

2 Read pressures directly from the upper display.

Superheat and Subcooling

1 Press circular button to cycle through temperature modes until

SH and SC are shown. While the SMAN can show superheat and

subcooling simultaneously, most technicians will only measure

one, depending on the system.

2 Choose the appropriate refrigerant using the REFRIGERANT

button.

3 Connect the K-type thermocouple and EPA approved refrigerant

hoses to your SMAN.

4 Connect your SMAN to the system:

Superheat: Hand tighten low side hose to suction line service

port. Place the thermocouple on the suction line between the

evaporator and compressor, no closer than 6 inches to compressor.

Subcooling: Hand tighten high side hose to liquid line service

port. Place the thermocouple on the liquid line between the

condenser and expansion valve (TXV), as close to the service port

as possible.

5 For reliable readings you must let the system run continuously for

15 minutes to stabilize.

6 Add or remove refrigerant using the low and high side valves as

needed. If adding or removing refrigerant, let the system stabilize

again for 15 minutes before reading the measurement.

T1 T2 Direct

1 Press circular button untilT1 and T2 are shown.

2 Plug in any K-type thermocouple into T1 and/or T2.

3 Read the temperature directly from the display.

Saturation

Shows vapor (VSAT) and liquid saturation (LSAT) temperatures,

based on the pressures measured and the refrigerant selected.

Target Superheat

1 Press circular button untilTarget SH is shown.

2 Plug the ATWB1 Wet bulb K-type thermocouple intoT1 and ATA1

Dry bulb K-type thermocouple into T2.

3 Use the arrow buttons to select which temperature you want to

measure rst. A blinking value means the SMAN is displaying the

real-time temperature.

4 For IDWB, wet the sock of the ATWB1. Clip it to the front of

the evaporator coil or lter. When the wet bulb temperature

reaches its lowest point and stabilizes. ENTER locks the reading.

"OL" will show if reading outside wet bulb charts. Re-take the

measurement.

5 For ODDB, clip the ATA1 thermocouple to the side of the

condenser. Once reading is stable, press ENTER. "OL" will show if

reading outside dry bulb charts. Re-take the measurement. For

best results, keep the ATA1 away from direct sunlight.

6 Once both IDWB and ODDB are set, the Target Superheat will

display in the lower left corner of the display. If the inputted IDWB

and ODDB temperatures indicate theTarget Superheat is negative,

"OL" will display in the lower left corner.

7 To change either IDWB or ODDB, press the UP/DOWN arrow button

until the label (IDWB or ODDB) you wish to change is blinking.

Press ENTER and the value will begin to blink. Re-take the

measurement and press ENTER to lock in the new measurement.

The newly calculated Target Superheat will be displayed in the

lower left corner.

8 To clear both IDWB and ODDB at the same time, press the ENTER

button.This will only work when a Target Superheat or "OL" is

displayed in the lower left corner.

Pulling a Vacuum (model SMAN3)

Follow all manufacturers’ evacuation

procedures over those in this manual.

Note: larger systems may take much longer to

reach a deep vacuum and a dierent evacuation

method or equipment might be preferred.

1 Connect your SMAN3 inline between your vacuum pump and the

system, then power on your SMAN3.

2 Draw a vacuum on the system. The SMAN will automatically

sense the negative pressure and display the vacuum in microns of

mercury. Indicators for increasing or decreasing pressure will be

shown.

3 Press Alarm button to toggle between the High (Hi) alarm, the

Low (Lo) alarm and no alarm. (No display for no alarm.)

(Note: The stopwatch will start when an alarm is selected.

Pressing Alarm will reset the stopwatch.)

4 When the rate of change in pressure is zero or near zero, Stable

will appear in the lower left corner of the display.

Additional Tips:

In order to achieve a deep vacuum as quickly as possible the

following practices are suggested.

1 Use the shortest hoses with the largest diameter available.

2 Remove Schrader cores and core depressors. Core removal tools

like the "MegaFlow Valve Core RemovalTool" can be purchased to

help with this process.

3 Inspect the rubber seals at both ends of your hoses for damage

that may result in leakage.

4 Do not use hoses with low loss ttings when evacuating or

pulling a vacuum on a system.

Set Vacuum Alarms (SMAN3)

1 Hold the Alarm button for one second to enter Alarm Set mode.

2 Press the Alarm button to toggle between Alarm Hi and Lo.

3 Use arrow buttons to adjust each alarm value.

4 Press ENTER to lock both alarms in.

T1 T2

Atmospheric

Pressure

Superheat

Subcooling

T1 T2 Direct Saturation

Target

Superheat

CAL CAL

Tes t

Pressure

AUTO

OFF

Refrigerant ON/OFF

Enter

Units

Alarm

Digital Manifold + Vacuum Gauge

SMAN3

ODDB

HH:MM:SS

Psig

Kpa

inHg

cmHg

Psig

Kpa

inHg

cmHg

SHT1

VSAT

APO

Microns

HiLo

SetStable

Alarm

IDWB

Target SH

R-

°F°C

SCT2

LSAT

°F°C

1110 12

Quick Start

1 Power on your SMAN by holding the ON/OFF

button for 1 second.

2 Select desired units (English or Metric) by

pressing the UNITS button (SMAN3) or hold-

ing the ENTER button for 1 second (SMAN2).

3 Calibrate temperature and/or pressure as

needed. See calibration sections for more

details.

4 Connect to the system.

5 Pressthecircularbuttontoselect yourdesired

function.

Certiﬁcations

C-Tick (N22675)

RoHS Compliant

Description

Your SMAN is the state-of-the-art portable

digital refrigerant manifold and vacuum gauge

(SMAN3) for A/C and refrigeration service. Your

SMAN combines high pressure manifold gauges,

a superheat/subcooling calculator, micron

gauge for vacuum (SMAN3), and temperature

measurements into one easy-to-use instrument.

Your SMAN calculates and displays target

superheat and actual superheat to ensure

proper charging of a unit. Use your SMAN as a

dual temperature instrument to simultaneously

display two temperatures using any K-type

thermocouple.

Your SMAN is designed to meet the demands

of the HVAC/R technician with a ruggedized

rubber boot for durability, a metal hanger

for easy storage and a high quality nylon

case. A bright blue backlight and very large,

easily viewable display lets you see your

measurements in any work environment. SMAN

has a very intuitive user interface and extremely

long battery life.

Your SMAN comes pre-programmed with the

most accurate P-T charts for the most common

refrigerants in the field so you are always

prepared for any job.

Display

Psig

Kpa

inHg

cmHg

Psig Pressure (pounds/in2)

Kpa Pressure (Kilopascals)

inHg Negative Pressure (inches of mercury)

cmHg NegativePressure (cm of mercury)

SHT1

VSAT

IDWB

°F°C

SH Superheat T1 T1 Direct

VSAT Vapor Saturation Temperature

IDWB Indoor Wet Bulb

Microns

HiLo

SetStable

Alarm

Target SH

°F°C

Stable Micron Reading Has Stabilized

Set Mode Alarm Alarm Mode

Hi High Alarm

oLow Alarm

Microns Vacuum (Microns of Mercury)

Target SH

Target Superheat

Fieldpiece

Digital Manifold &

Vacuum Gauge

OPERATOR'S MANUAL

Models SMAN2 SMAN3

Psig

Kpa

inHg

cmHg

Psig Pressure (pounds/in2)

Kpa Pressure (Kilopascals)

inHg Negative Pressure (inches of mercury)

cmHg NegativePressure (cm of mercury)

ODDB

HH:MM:SS

SCT2

LSAT

°F°C

SC Subcooling

T2 T2 Direct

LSAT Liquid Saturation Temperature

ODDB Outdoor Dry Bulb

Vacuum Stopwatch

HH:MM:SS Hours:Minutes or Minutes:Seconds

HH:M

APO

R-

Battery Life

APO Auto Power O Enabled

R-

Selected Refrigerant of System

Controls

Cont

Atmospheric

Pressure

Refrigeran

1 Insert K-type thermocouple plugs here.

2 Temperature calibration pots.

3 Press to zero atmospheric pressure.

4 Presstolinearadjust pressurecurve.(See

Advanced Pressure Calibration section.)

5 Presstoengagebacklight.Holdwhen

powering on to toggle Auto Power O.

6 Press/hold to cycle through refrigerants.

7 Hold 1 second to toggle power on/o.

8 Press up or down arrow to adjust values.

9 Press to confirm selection. For the

SMAN2, hold 1 second to adjust units.

10 Hold to enter alarm setup mode. (SMAN3)

11 Press to toggle through temperature tests.

Hold to auto-toggle.

12 Press to adjust units. (SMAN3)

13 Turn clockwise to close Low side port.

14 Turn clockwise to close High side port.

Functions

Standard Pressure

1 Connect your SMAN to the system using EPA approved 1/4in

refrigerant hoses.

2 Read pressures directly from the upper display.

Superheat and Subcooling

1 Press circular button to cycle through temperature modes until

SH and SC are shown. While the SMAN can show superheat and

subcooling simultaneously, most technicians will only measure

one, depending on the system.

2 Choose the appropriate refrigerant using the REFRIGERANT

button.

3 Connect the K-type thermocouple and EPA approved refrigerant

hoses to your SMAN.

4 Connect your SMAN to the system:

Superheat: Hand tighten low side hose to suction line service

port. Place the thermocouple on the suction line between the

evaporator and compressor, no closer than 6 inches to compressor.

Subcooling: Hand tighten high side hose to liquid line service

port. Place the thermocouple on the liquid line between the

condenser and expansion valve (TXV), as close to the service port

as possible.

5 For reliable readings you must let the system run continuously for

15 minutes to stabilize.

6 Add or remove refrigerant using the low and high side valves as

needed. If adding or removing refrigerant, let the system stabilize

again for 15 minutes before reading the measurement.

T1 T2 Direct

1 Press circular button until T1 and T2 are shown.

2 Plug in any K-type thermocouple intoT1 and/or T2.

3 Read the temperature directly from the display.

Saturation

Shows vapor (VSAT) and liquid saturation (LSAT) temperatures,

based on the pressures measured and the refrigerant selected.

Target Superheat

1 Press circular button until Target SH is shown.

2 Plug the ATWB1 Wet bulb K-type thermocouple into T1 and ATA1

Dry bulb K-type thermocouple into T2.

3 Use the arrow buttons to select which temperature you want to

measure rst. A blinking value means the SMAN is displaying the

real-time temperature.

4 For IDWB, wet the sock of the ATWB1. Clip it to the front of

the evaporator coil or lter. When the wet bulb temperature

reaches its lowest point and stabilizes. ENTER locks the reading.

"OL" will show if reading outside wet bulb charts. Re-take the

measurement.

5 For ODDB, clip the ATA1 thermocouple to the side of the

condenser. Once reading is stable, press ENTER. "OL" will show if

reading outside dry bulb charts. Re-take the measurement. For

best results, keep the ATA1 away from direct sunlight.

6 Once both IDWB and ODDB are set, the Target Superheat will

display in the lower left corner of the display. If the inputted IDWB

and ODDB temperatures indicate theTarget Superheat is negative,

"OL" will display in the lower left corner.

7 To change either IDWB or ODDB, press the UP/DOWN arrow button

until the label (IDWB or ODDB) you wish to change is blinking.

Press ENTER and the value will begin to blink. Re-take the

measurement and press ENTER to lock in the new measurement.

The newly calculated Target Superheat will be displayed in the

lower left corner.

8 To clear both IDWB and ODDB at the same time, press the ENTER

button.This will only work when a Target Superheat or "OL" is

displayed in the lower left corner.

Pulling a Vacuum (model SMAN3)

Follow all manufacturers’ evacuation

procedures over those in this manual.

Note: larger systems may take much longer to

reach a deep vacuum and a dierent evacuation

method or equipment might be preferred.

1 Connect your SMAN3 inline between your vacuum pump and the

system, then power on your SMAN3.

2 Draw a vacuum on the system.The SMAN will automatically

sense the negative pressure and display the vacuum in microns of

mercury. Indicators for increasing or decreasing pressure will be

shown.

3 Press Alarm button to toggle between the High (Hi) alarm, the

Low (Lo) alarm and no alarm. (No display for no alarm.)

(Note: The stopwatch will start when an alarm is selected.

Pressing Alarm will reset the stopwatch.)

4 When the rate of change in pressure is zero or near zero, Stable

will appear in the lower left corner of the display.

Additional Tips:

In order to achieve a deep vacuum as quickly as possible the

following practices are suggested.

1 Use the shortest hoses with the largest diameter available.

2 Remove Schrader cores and core depressors. Core removal tools

like the "MegaFlow Valve Core RemovalTool" can be purchased to

help with this process.

3 Inspect the rubber seals at both ends of your hoses for damage

that may result in leakage.

4 Do not use hoses with low loss ttings when evacuating or

pulling a vacuum on a system.

Set Vacuum Alarms (SMAN3)

1 Hold the Alarm button for one second to enter Alarm Set mode.

2 Press the Alarm button to toggle between Alarm Hi and Lo.

3 Use arrow buttons to adjust each alarm value.

4 Press ENTER to lock both alarms in.

T1 T2

Atmospheric

Pressure

Superheat

Subcooling

T1 T2 Direct Saturation

Target

Superheat

CAL CAL

Tes t

Pressure

AUTO

OFF

Refrigerant ON/OFF

Enter

Units

Alarm

Digital Manifold + Vacuum Gauge

SMAN3

ODDB

HH:MM:SS

Psig

Kpa

inHg

cmHg

Psig

Kpa

inHg

cmHg

SHT1

VSAT

APO

Microns

HiLo

SetStable

Alarm

IDWB

Target SH

R-

°F°C

SCT2

LSAT

°F°C

1110 12

Quick Start

1 Power on your SMAN by holding the ON/OFF

button for 1 second.

2 Select desired units (English or Metric) by

pressing the UNITS button (SMAN3) or hold-

ing the ENTER button for 1 second (SMAN2).

3 Calibrate temperature and/or pressure as

needed. See calibration sections for more

details.

4 Connect to the system.

5 Pressthecircularbuttontoselectyourdesired

function.

Certiﬁcations

C-Tick (N22675)

RoHS Compliant

Description

Your SMAN is the state-of-the-art portable

digital refrigerant manifold and vacuum gauge

(SMAN3) for A/C and refrigeration service. Your

SMAN combines high pressure manifold gauges,

a superheat/subcooling calculator, micron

gauge for vacuum (SMAN3), and temperature

measurements into one easy-to-use instrument.

Your SMAN calculates and displays target

superheat and actual superheat to ensure

proper charging of a unit. Use your SMAN as a

dual temperature instrument to simultaneously

display two temperatures using any K-type

thermocouple.

Your SMAN is designed to meet the demands

of the HVAC/R technician with a ruggedized

rubber boot for durability, a metal hanger

for easy storage and a high quality nylon

case. A bright blue backlight and very large,

easily viewable display lets you see your

measurements in any work environment. SMAN

has a very intuitive user interface and extremely

long battery life.

Your SMAN comes pre-programmed with the

most accurate P-T charts for the most common

refrigerants in the field so you are always

prepared for any job.

Display

Psig

Kpa

inHg

cmHg

Psig Pressure (pounds/in2)

Kpa Pressure (Kilopascals)

inHg Negative Pressure (inches of mercury)

cmHg NegativePressure (cm of mercury)

SHT1

VSAT

IDWB

°F°C

SH Superheat T1 T1 Direct

VSAT Vapor Saturation Temperature

IDWB Indoor Wet Bulb

Microns

HiLo

SetStable

Alarm

Target SH

°F°C

Stable Micron Reading Has Stabilized

Set Mode Alarm Alarm Mode

Hi High Alarm

oLow Alarm

Microns Vacuum (Microns of Mercury)

Target SH

Target Superheat

Fieldpiece

Digital Manifold &

Vacuum Gauge

OPERATOR'S MANUAL

Models SMAN2 SMAN3

Psig

Kpa

inHg

cmHg

Psig Pressure (pounds/in2)

Kpa Pressure (Kilopascals)

inHg Negative Pressure (inches of mercury)

cmHg NegativePressure (cm of mercury)

ODDB

HH:MM:SS

SCT2

LSAT

°F°C

SC Subcooling

T2 T2 Direct

LSAT Liquid Saturation Temperature

ODDB Outdoor Dry Bulb

Vacuum Stopwatch

HH:MM:SS Hours:Minutes or Minutes:Seconds

HH:M

APO

R-

Battery Life

APO Auto Power O Enabled

R-

Selected Refrigerant of System

Controls

Cont

Atmospheric

Pressure

Refrigeran

1 Insert K-type thermocouple plugs here.

2 Temperature calibration pots.

3 Press to zero atmospheric pressure.

4 Presstolinear adjust pressurecurve.(See

Advanced Pressure Calibration section.)

5 Presstoengage backlight.Holdwhen

powering on to toggle Auto Power O.

6 Press/hold to cycle through refrigerants.

7 Hold 1 second to toggle power on/o.

8 Press up or down arrow to adjust values.

9 Press to confirm selection. For the

SMAN2, hold 1 second to adjust units.

10 Hold to enter alarm setup mode. (SMAN3)

11 Press to toggle through temperature tests.

Hold to auto-toggle.

12 Press to adjust units. (SMAN3)

13 Turn clockwise to close Low side port.

14 Turn clockwise to close High side port.

Functions

Standard Pressure

1 Connect your SMAN to the system using EPA approved 1/4in

refrigerant hoses.

2 Read pressures directly from the upper display.

Superheat and Subcooling

1 Press circular button to cycle through temperature modes until

SH and SC are shown. While the SMAN can show superheat and

subcooling simultaneously, most technicians will only measure

one, depending on the system.

2 Choose the appropriate refrigerant using the REFRIGERANT

button.

3 Connect the K-type thermocouple and EPA approved refrigerant

hoses to your SMAN.

4 Connect your SMAN to the system:

Superheat: Hand tighten low side hose to suction line service

port. Place the thermocouple on the suction line between the

evaporator and compressor, no closer than 6 inches to compressor.

Subcooling: Hand tighten high side hose to liquid line service

port. Place the thermocouple on the liquid line between the

condenser and expansion valve (TXV), as close to the service port

as possible.

5 For reliable readings you must let the system run continuously for

15 minutes to stabilize.

6 Add or remove refrigerant using the low and high side valves as

needed. If adding or removing refrigerant, let the system stabilize

again for 15 minutes before reading the measurement.

T1 T2 Direct

1 Press circular button until T1 andT2 are shown.

2 Plug in any K-type thermocouple into T1 and/or T2.

3 Read the temperature directly from the display.

Saturation

Shows vapor (VSAT) and liquid saturation (LSAT) temperatures,

based on the pressures measured and the refrigerant selected.

Target Superheat

1 Press circular button until Target SH is shown.

2 Plug the ATWB1 Wet bulb K-type thermocouple into T1 and ATA1

Dry bulb K-type thermocouple into T2.

3 Use the arrow buttons to select which temperature you want to

measure rst. A blinking value means the SMAN is displaying the

real-time temperature.

4 For IDWB, wet the sock of the ATWB1. Clip it to the front of

the evaporator coil or lter. When the wet bulb temperature

reaches its lowest point and stabilizes. ENTER locks the reading.

"OL" will show if reading outside wet bulb charts. Re-take the

measurement.

5 For ODDB, clip the ATA1 thermocouple to the side of the

condenser. Once reading is stable, press ENTER. "OL" will show if

reading outside dry bulb charts. Re-take the measurement. For

best results, keep the ATA1 away from direct sunlight.

6 Once both IDWB and ODDB are set, the Target Superheat will

display in the lower left corner of the display. If the inputted IDWB

and ODDB temperatures indicate theTarget Superheat is negative,

"OL" will display in the lower left corner.

7 To change either IDWB or ODDB, press the UP/DOWN arrow button

until the label (IDWB or ODDB) you wish to change is blinking.

Press ENTER and the value will begin to blink. Re-take the

measurement and press ENTER to lock in the new measurement.

The newly calculated Target Superheat will be displayed in the

lower left corner.

8 To clear both IDWB and ODDB at the same time, press the ENTER

button.This will only work when a Target Superheat or "OL" is

displayed in the lower left corner.

Pulling a Vacuum (model SMAN3)

Follow all manufacturers’ evacuation

procedures over those in this manual.

Note: larger systems may take much longer to

reach a deep vacuum and a dierent evacuation

method or equipment might be preferred.

1 Connect your SMAN3 inline between your vacuum pump and the

system, then power on your SMAN3.

2 Draw a vacuum on the system.The SMAN will automatically

sense the negative pressure and display the vacuum in microns of

mercury. Indicators for increasing or decreasing pressure will be

shown.

3 Press Alarm button to toggle between the High (Hi) alarm, the

Low (Lo) alarm and no alarm. (No display for no alarm.)

(Note: The stopwatch will start when an alarm is selected.

Pressing Alarm will reset the stopwatch.)

4 When the rate of change in pressure is zero or near zero, Stable

will appear in the lower left corner of the display.

Additional Tips:

In order to achieve a deep vacuum as quickly as possible the

following practices are suggested.

1 Use the shortest hoses with the largest diameter available.

2 Remove Schrader cores and core depressors. Core removal tools

like the "MegaFlow Valve Core RemovalTool" can be purchased to

help with this process.

3 Inspect the rubber seals at both ends of your hoses for damage

that may result in leakage.

4 Do not use hoses with low loss ttings when evacuating or

pulling a vacuum on a system.

Set Vacuum Alarms (SMAN3)

1 Hold the Alarm button for one second to enter Alarm Set mode.

2 Press the Alarm button to toggle between Alarm Hi and Lo.

3 Use arrow buttons to adjust each alarm value.

4 Press ENTER to lock both alarms in.

T1 T2

Atmospheric

Pressure

Superheat

Subcooling

T1 T2 Direct Saturation

Target

Superheat

CAL CAL

Tes t

Pressure

AUTO

OFF

Refrigerant ON/OFF

Enter

Units

Alarm

Digital Manifold + Vacuum Gauge

SMAN3

ODDB

HH:MM:SS

Psig

Kpa

inHg

cmHg

Psig

Kpa

inHg

cmHg

SHT1

VSAT

APO

Microns

HiLo

SetStable

Alarm

IDWB

Target SH

R-

°F°C

SCT2

LSAT

°F°C

1110 12

Quick Start

1 Power on your SMAN by holding the ON/OFF

button for 1 second.

2 Select desired units (English or Metric) by

pressing the UNITS button (SMAN3) or hold-

ing the ENTER button for 1 second (SMAN2).

3 Calibrate temperature and/or pressure as

needed. See calibration sections for more

details.

4 Connect to the system.

5 Pressthecircularbuttontoselect yourdesired

function.

Certiﬁcations

C-Tick (N22675)

RoHS Compliant

Description

Your SMAN is the state-of-the-art portable

digital refrigerant manifold and vacuum gauge

(SMAN3) for A/C and refrigeration service. Your

SMAN combines high pressure manifold gauges,

a superheat/subcooling calculator, micron

gauge for vacuum (SMAN3), and temperature

measurements into one easy-to-use instrument.

Your SMAN calculates and displays target

superheat and actual superheat to ensure

proper charging of a unit. Use your SMAN as a

dual temperature instrument to simultaneously

display two temperatures using any K-type

thermocouple.

Your SMAN is designed to meet the demands

of the HVAC/R technician with a ruggedized

rubber boot for durability, a metal hanger

for easy storage and a high quality nylon

case. A bright blue backlight and very large,

easily viewable display lets you see your

measurements in any work environment. SMAN

has a very intuitive user interface and extremely

long battery life.

Your SMAN comes pre-programmed with the

most accurate P-T charts for the most common

refrigerants in the field so you are always

prepared for any job.

Display

Psig

Kpa

inHg

cmHg

Psig Pressure (pounds/in2)

Kpa Pressure (Kilopascals)

inHg Negative Pressure (inches of mercury)

cmHg NegativePressure (cm of mercury)

SHT1

VSAT

IDWB

°F°C

SH Superheat T1 T1 Direct

VSAT Vapor Saturation Temperature

IDWB Indoor Wet Bulb

Microns

HiLo

SetStable

Alarm

Target SH

°F°C

Stable Micron Reading Has Stabilized

Set Mode Alarm Alarm Mode

Hi High Alarm

oLow Alarm

Microns Vacuum (Microns of Mercury)

Target SH

Target Superheat

Fieldpiece

Digital Manifold &

Vacuum Gauge

OPERATOR'S MANUAL

Models SMAN2 SMAN3

Psig

Kpa

inHg

cmHg

Psig Pressure (pounds/in2)

Kpa Pressure (Kilopascals)

inHg Negative Pressure (inches of mercury)

cmHg NegativePressure (cm of mercury)

ODDB

HH:MM:SS

SCT2

LSAT

°F°C

SC Subcooling

T2 T2 Direct

LSAT Liquid Saturation Temperature

ODDB Outdoor Dry Bulb

Vacuum Stopwatch

HH:MM:SS Hours:Minutes or Minutes:Seconds

HH:M

APO

R-

Battery Life

APO Auto Power O Enabled

R-

Selected Refrigerant of System

Controls

Cont

Atmospheric

Pressure

Refrigeran

1 Insert K-type thermocouple plugs here.

2 Temperature calibration pots.

3 Press to zero atmospheric pressure.

4 Presstolinearadjust pressurecurve.(See

Advanced Pressure Calibration section.)

5 Presstoengagebacklight.Holdwhen

powering on to toggle Auto Power O.

6 Press/hold to cycle through refrigerants.

7 Hold 1 second to toggle power on/o.

8 Press up or down arrow to adjust values.

9 Press to confirm selection. For the

SMAN2, hold 1 second to adjust units.

10 Hold to enter alarm setup mode. (SMAN3)

11 Press to toggle through temperature tests.

Hold to auto-toggle.

12 Press to adjust units. (SMAN3)

13 Turn clockwise to close Low side port.

14 Turn clockwise to close High side port.

Functions

Standard Pressure

1 Connect your SMAN to the system using EPA approved 1/4in

refrigerant hoses.

2 Read pressures directly from the upper display.

Superheat and Subcooling

1 Press circular button to cycle through temperature modes until

SH and SC are shown. While the SMAN can show superheat and

subcooling simultaneously, most technicians will only measure

one, depending on the system.

2 Choose the appropriate refrigerant using the REFRIGERANT

button.

3 Connect the K-type thermocouple and EPA approved refrigerant

hoses to your SMAN.

4 Connect your SMAN to the system:

Superheat: Hand tighten low side hose to suction line service

port. Place the thermocouple on the suction line between the

evaporator and compressor, no closer than 6 inches to compressor.

Subcooling: Hand tighten high side hose to liquid line service

port. Place the thermocouple on the liquid line between the

condenser and expansion valve (TXV), as close to the service port

as possible.

5 For reliable readings you must let the system run continuously for

15 minutes to stabilize.

6 Add or remove refrigerant using the low and high side valves as

needed. If adding or removing refrigerant, let the system stabilize

again for 15 minutes before reading the measurement.

T1 T2 Direct

1 Press circular button until T1 and T2 are shown.

2 Plug in any K-type thermocouple intoT1 and/or T2.

3 Read the temperature directly from the display.

Saturation

Shows vapor (VSAT) and liquid saturation (LSAT) temperatures,

based on the pressures measured and the refrigerant selected.

Target Superheat

1 Press circular button until Target SH is shown.

2 Plug the ATWB1 Wet bulb K-type thermocouple into T1 and ATA1

Dry bulb K-type thermocouple into T2.

3 Use the arrow buttons to select which temperature you want to

measure rst. A blinking value means the SMAN is displaying the

real-time temperature.

4 For IDWB, wet the sock of the ATWB1. Clip it to the front of

the evaporator coil or lter. When the wet bulb temperature

reaches its lowest point and stabilizes. ENTER locks the reading.

"OL" will show if reading outside wet bulb charts. Re-take the

measurement.

5 For ODDB, clip the ATA1 thermocouple to the side of the

condenser. Once reading is stable, press ENTER. "OL" will show if

reading outside dry bulb charts. Re-take the measurement. For

best results, keep the ATA1 away from direct sunlight.

6 Once both IDWB and ODDB are set, the Target Superheat will

display in the lower left corner of the display. If the inputted IDWB

and ODDB temperatures indicate theTarget Superheat is negative,

"OL" will display in the lower left corner.

7 To change either IDWB or ODDB, press the UP/DOWN arrow button

until the label (IDWB or ODDB) you wish to change is blinking.

Press ENTER and the value will begin to blink. Re-take the

measurement and press ENTER to lock in the new measurement.

The newly calculated Target Superheat will be displayed in the

lower left corner.

8 To clear both IDWB and ODDB at the same time, press the ENTER

button.This will only work when a Target Superheat or "OL" is

displayed in the lower left corner.

Pulling a Vacuum (model SMAN3)

Follow all manufacturers’ evacuation

procedures over those in this manual.

Note: larger systems may take much longer to

reach a deep vacuum and a dierent evacuation

method or equipment might be preferred.

1 Connect your SMAN3 inline between your vacuum pump and the

system, then power on your SMAN3.

2 Draw a vacuum on the system.The SMAN will automatically

sense the negative pressure and display the vacuum in microns of

mercury. Indicators for increasing or decreasing pressure will be

shown.

3 Press Alarm button to toggle between the High (Hi) alarm, the

Low (Lo) alarm and no alarm. (No display for no alarm.)

(Note: The stopwatch will start when an alarm is selected.

Pressing Alarm will reset the stopwatch.)

4 When the rate of change in pressure is zero or near zero, Stable

will appear in the lower left corner of the display.

Additional Tips:

In order to achieve a deep vacuum as quickly as possible the

following practices are suggested.

1 Use the shortest hoses with the largest diameter available.

2 Remove Schrader cores and core depressors. Core removal tools

like the "MegaFlow Valve Core RemovalTool" can be purchased to

help with this process.

3 Inspect the rubber seals at both ends of your hoses for damage

that may result in leakage.

4 Do not use hoses with low loss ttings when evacuating or

pulling a vacuum on a system.

Set Vacuum Alarms (SMAN3)

1 Hold the Alarm button for one second to enter Alarm Set mode.

2 Press the Alarm button to toggle between Alarm Hi and Lo.

3 Use arrow buttons to adjust each alarm value.

4 Press ENTER to lock both alarms in.

T1 T2

Atmospheric

Pressure

Superheat

Subcooling

T1 T2 Direct Saturation

Target

Superheat

CAL CAL

Tes t

Pressure

AUTO

OFF

Refrigerant ON/OFF

Enter

Units

Alarm

Digital Manifold + Vacuum Gauge

SMAN3

ODDB

HH:MM:SS

Psig

Kpa

inHg

cmHg

Psig

Kpa

inHg

cmHg

SHT1

VSAT

APO

Microns

HiLo

SetStable

Alarm

IDWB

Target SH

R-

°F°C

SCT2

LSAT

°F°C

1110 12

Quick Start

1 Power on your SMAN by holding the ON/OFF

button for 1 second.

2 Select desired units (English or Metric) by

pressing the UNITS button (SMAN3) or hold-

ing the ENTER button for 1 second (SMAN2).

3 Calibrate temperature and/or pressure as

needed. See calibration sections for more

details.

4 Connect to the system.

5 Pressthecircularbuttontoselect yourdesired

function.

Certiﬁcations

C-Tick (N22675)

RoHS Compliant

Description

Your SMAN is the state-of-the-art portable

digital refrigerant manifold and vacuum gauge

(SMAN3) for A/C and refrigeration service. Your

SMAN combines high pressure manifold gauges,

a superheat/subcooling calculator, micron

gauge for vacuum (SMAN3), and temperature

measurements into one easy-to-use instrument.

Your SMAN calculates and displays target

superheat and actual superheat to ensure

proper charging of a unit. Use your SMAN as a

dual temperature instrument to simultaneously

display two temperatures using any K-type

thermocouple.

Your SMAN is designed to meet the demands

of the HVAC/R technician with a ruggedized

rubber boot for durability, a metal hanger

for easy storage and a high quality nylon

case. A bright blue backlight and very large,

easily viewable display lets you see your

measurements in any work environment. SMAN

has a very intuitive user interface and extremely

long battery life.

Your SMAN comes pre-programmed with the

most accurate P-T charts for the most common

refrigerants in the field so you are always

prepared for any job.

Display

Psig

Kpa

inHg

cmHg

Psig Pressure (pounds/in2)

Kpa Pressure (Kilopascals)

inHg Negative Pressure (inches of mercury)

cmHg NegativePressure (cm of mercury)

SHT1

VSAT

IDWB

°F°C

SH Superheat T1 T1 Direct

VSAT Vapor Saturation Temperature

IDWB Indoor Wet Bulb

Microns

HiLo

SetStable

Alarm

Target SH

°F°C

Stable Micron Reading Has Stabilized

Set Mode Alarm Alarm Mode

Hi High Alarm

oLow Alarm

Microns Vacuum (Microns of Mercury)

Target SH

Target Superheat

Fieldpiece

Digital Manifold &

Vacuum Gauge

OPERATOR'S MANUAL

Models SMAN2 SMAN3

Psig

Kpa

inHg

cmHg

Psig Pressure (pounds/in2)

Kpa Pressure (Kilopascals)

inHg Negative Pressure (inches of mercury)

cmHg NegativePressure (cm of mercury)

ODDB

HH:MM:SS

SCT2

LSAT

°F°C

SC Subcooling

T2 T2 Direct

LSAT Liquid Saturation Temperature

ODDB Outdoor Dry Bulb

Vacuum Stopwatch

HH:MM:SS Hours:Minutes or Minutes:Seconds

HH:M

APO

R-

Battery Life

APO Auto Power O Enabled

R-

Selected Refrigerant of System

Controls

Cont

Atmospheric

Pressure

Refrigeran

1 Insert K-type thermocouple plugs here.

2 Temperature calibration pots.

3 Press to zero atmospheric pressure.

4 Presstolinearadjust pressurecurve.(See

Advanced Pressure Calibration section.)

5 Presstoengagebacklight.Holdwhen

powering on to toggle Auto Power O.

6 Press/hold to cycle through refrigerants.

7 Hold 1 second to toggle power on/o.

8 Press up or down arrow to adjust values.

9 Press to confirm selection. For the

SMAN2, hold 1 second to adjust units.

10 Hold to enter alarm setup mode. (SMAN3)

11 Press to toggle through temperature tests.

Hold to auto-toggle.

12 Press to adjust units. (SMAN3)

13 Turn clockwise to close Low side port.

14 Turn clockwise to close High side port.

Functions

Standard Pressure

1 Connect your SMAN to the system using EPA approved 1/4in

refrigerant hoses.

2 Read pressures directly from the upper display.

Superheat and Subcooling

1 Press circular button to cycle through temperature modes until

SH and SC are shown. While the SMAN can show superheat and

subcooling simultaneously, most technicians will only measure

one, depending on the system.

2 Choose the appropriate refrigerant using the REFRIGERANT

button.

3 Connect the K-type thermocouple and EPA approved refrigerant

hoses to your SMAN.

4 Connect your SMAN to the system:

Superheat: Hand tighten low side hose to suction line service

port. Place the thermocouple on the suction line between the

evaporator and compressor, no closer than 6 inches to compressor.

Subcooling: Hand tighten high side hose to liquid line service

port. Place the thermocouple on the liquid line between the

condenser and expansion valve (TXV), as close to the service port

as possible.

5 For reliable readings you must let the system run continuously for

15 minutes to stabilize.

6 Add or remove refrigerant using the low and high side valves as

needed. If adding or removing refrigerant, let the system stabilize

again for 15 minutes before reading the measurement.

T1 T2 Direct

1 Press circular button until T1 and T2 are shown.

2 Plug in any K-type thermocouple intoT1 and/or T2.

3 Read the temperature directly from the display.

Saturation

Shows vapor (VSAT) and liquid saturation (LSAT) temperatures,

based on the pressures measured and the refrigerant selected.

Target Superheat

1 Press circular button until Target SH is shown.

2 Plug the ATWB1 Wet bulb K-type thermocouple into T1 and ATA1

Dry bulb K-type thermocouple into T2.

3 Use the arrow buttons to select which temperature you want to

measure rst. A blinking value means the SMAN is displaying the

real-time temperature.

4 For IDWB, wet the sock of the ATWB1. Clip it to the front of

the evaporator coil or lter. When the wet bulb temperature

reaches its lowest point and stabilizes. ENTER locks the reading.

"OL" will show if reading outside wet bulb charts. Re-take the

measurement.

5 For ODDB, clip the ATA1 thermocouple to the side of the

condenser. Once reading is stable, press ENTER. "OL" will show if

reading outside dry bulb charts. Re-take the measurement. For

best results, keep the ATA1 away from direct sunlight.

6 Once both IDWB and ODDB are set, the Target Superheat will

display in the lower left corner of the display. If the inputted IDWB

and ODDB temperatures indicate theTarget Superheat is negative,

"OL" will display in the lower left corner.

7 To change either IDWB or ODDB, press the UP/DOWN arrow button

until the label (IDWB or ODDB) you wish to change is blinking.

Press ENTER and the value will begin to blink. Re-take the

measurement and press ENTER to lock in the new measurement.

The newly calculated Target Superheat will be displayed in the

lower left corner.

8 To clear both IDWB and ODDB at the same time, press the ENTER

button.This will only work when a Target Superheat or "OL" is

displayed in the lower left corner.

Pulling a Vacuum (model SMAN3)

Follow all manufacturers’ evacuation

procedures over those in this manual.

Note: larger systems may take much longer to

reach a deep vacuum and a dierent evacuation

method or equipment might be preferred.

1 Connect your SMAN3 inline between your vacuum pump and the

system, then power on your SMAN3.

2 Draw a vacuum on the system.The SMAN will automatically

sense the negative pressure and display the vacuum in microns of

mercury. Indicators for increasing or decreasing pressure will be

shown.

3 Press Alarm button to toggle between the High (Hi) alarm, the

Low (Lo) alarm and no alarm. (No display for no alarm.)

(Note: The stopwatch will start when an alarm is selected.

Pressing Alarm will reset the stopwatch.)

4 When the rate of change in pressure is zero or near zero, Stable

will appear in the lower left corner of the display.

Additional Tips:

In order to achieve a deep vacuum as quickly as possible the

following practices are suggested.

1 Use the shortest hoses with the largest diameter available.

2 Remove Schrader cores and core depressors. Core removal tools

like the "MegaFlow Valve Core RemovalTool" can be purchased to

help with this process.

3 Inspect the rubber seals at both ends of your hoses for damage

that may result in leakage.

4 Do not use hoses with low loss ttings when evacuating or

pulling a vacuum on a system.

Set Vacuum Alarms (SMAN3)

1 Hold the Alarm button for one second to enter Alarm Set mode.

2 Press the Alarm button to toggle between Alarm Hi and Lo.

3 Use arrow buttons to adjust each alarm value.

4 Press ENTER to lock both alarms in.

T1 T2

Atmospheric

Pressure

Superheat

Subcooling

T1 T2 Direct Saturation

Target

Superheat

CAL CAL

Tes t

Pressure

AUTO

OFF

Refrigerant ON/OFF

Enter

Units

Alarm

Digital Manifold + Vacuum Gauge

SMAN3

ODDB

HH:MM:SS

Psig

Kpa

inHg

cmHg

Psig

Kpa

inHg

cmHg

SHT1

VSAT

APO

Microns

HiLo

SetStable

Alarm

IDWB

Target SH

R-

°F°C

SCT2

LSAT

°F°C

1110 12

Quick Start

1 Power on your SMAN by holding the ON/OFF

button for 1 second.

2 Select desired units (English or Metric) by

pressing the UNITS button (SMAN3) or hold-

ing the ENTER button for 1 second (SMAN2).

3 Calibrate temperature and/or pressure as

needed. See calibration sections for more

details.

4 Connect to the system.

5 Pressthecircularbuttontoselect yourdesired

function.

Certiﬁcations

C-Tick (N22675)

RoHS Compliant

Description

Your SMAN is the state-of-the-art portable

digital refrigerant manifold and vacuum gauge

(SMAN3) for A/C and refrigeration service. Your

SMAN combines high pressure manifold gauges,

a superheat/subcooling calculator, micron

gauge for vacuum (SMAN3), and temperature

measurements into one easy-to-use instrument.

Your SMAN calculates and displays target

superheat and actual superheat to ensure

proper charging of a unit. Use your SMAN as a

dual temperature instrument to simultaneously

display two temperatures using any K-type

thermocouple.

Your SMAN is designed to meet the demands

of the HVAC/R technician with a ruggedized

rubber boot for durability, a metal hanger

for easy storage and a high quality nylon

case. A bright blue backlight and very large,

easily viewable display lets you see your

measurements in any work environment. SMAN

has a very intuitive user interface and extremely

long battery life.

Your SMAN comes pre-programmed with the

most accurate P-T charts for the most common

refrigerants in the field so you are always

prepared for any job.

Display

Psig

Kpa

inHg

cmHg

Psig Pressure (pounds/in2)

Kpa Pressure (Kilopascals)

inHg Negative Pressure (inches of mercury)

cmHg NegativePressure (cm of mercury)

SHT1

VSAT

IDWB

°F°C

SH Superheat T1 T1 Direct

VSAT Vapor Saturation Temperature

IDWB Indoor Wet Bulb

Microns

HiLo

SetStable

Alarm

Target SH

°F°C

Stable Micron Reading Has Stabilized

Set Mode Alarm Alarm Mode

Hi High Alarm

oLow Alarm

Microns Vacuum (Microns of Mercury)

Target SH

Target Superheat

Fieldpiece

Digital Manifold &

Vacuum Gauge

OPERATOR'S MANUAL

Models SMAN2 SMAN3

Psig

Kpa

inHg

cmHg

Psig Pressure (pounds/in2)

Kpa Pressure (Kilopascals)

inHg Negative Pressure (inches of mercury)

cmHg NegativePressure (cm of mercury)

ODDB

HH:MM:SS

SCT2

LSAT

°F°C

SC Subcooling

T2 T2 Direct

LSAT Liquid Saturation Temperature

ODDB Outdoor Dry Bulb

Vacuum Stopwatch

HH:MM:SS Hours:Minutes or Minutes:Seconds

HH:M

APO

R-

Battery Life

APO Auto Power O Enabled

R-

Selected Refrigerant of System

Controls

Cont

Atmospheric

Pressure

Refrigeran

1 Insert K-type thermocouple plugs here.

2 Temperature calibration pots.

3 Press to zero atmospheric pressure.

4 Pressto linearadjustpressurecurve.(See

Advanced Pressure Calibration section.)

5 Pressto engagebacklight. Hold when

powering on to toggle Auto Power O.

6 Press/hold to cycle through refrigerants.

7 Hold 1 second to toggle power on/o.

8 Press up or down arrow to adjust values.

9 Press to confirm selection. For the

SMAN2, hold 1 second to adjust units.

10 Hold to enter alarm setup mode. (SMAN3)

11 Press to toggle through temperature tests.

Hold to auto-toggle.

12 Press to adjust units. (SMAN3)

13 Turn clockwise to close Low side port.

14 Turn clockwise to close High side port.

Functions

Standard Pressure

1 Connect your SMAN to the system using EPA approved 1/4in

refrigerant hoses.

2 Read pressures directly from the upper display.

Superheat and Subcooling

1 Press circular button to cycle through temperature modes until

SH and SC are shown. While the SMAN can show superheat and

subcooling simultaneously, most technicians will only measure

one, depending on the system.

2 Choose the appropriate refrigerant using the REFRIGERANT

button.

3 Connect the K-type thermocouple and EPA approved refrigerant

hoses to your SMAN.

4 Connect your SMAN to the system:

Superheat: Hand tighten low side hose to suction line service

port. Place the thermocouple on the suction line between the

evaporator and compressor, no closer than 6 inches to compressor.

Subcooling: Hand tighten high side hose to liquid line service

port. Place the thermocouple on the liquid line between the

condenser and expansion valve (TXV), as close to the service port

as possible.

5 For reliable readings you must let the system run continuously for

15 minutes to stabilize.

6 Add or remove refrigerant using the low and high side valves as

needed. If adding or removing refrigerant, let the system stabilize

again for 15 minutes before reading the measurement.

T1 T2 Direct

1 Press circular button until T1 and T2 are shown.

2 Plug in any K-type thermocouple into T1 and/orT2.

3 Read the temperature directly from the display.

Saturation

Shows vapor (VSAT) and liquid saturation (LSAT) temperatures,

based on the pressures measured and the refrigerant selected.

Target Superheat

1 Press circular button until Target SH is shown.

2 Plug the ATWB1 Wet bulb K-type thermocouple intoT1 and ATA1

Dry bulb K-type thermocouple into T2.

3 Use the arrow buttons to select which temperature you want to

measure rst. A blinking value means the SMAN is displaying the

real-time temperature.

4 For IDWB, wet the sock of the ATWB1. Clip it to the front of

the evaporator coil or lter. When the wet bulb temperature

reaches its lowest point and stabilizes. ENTER locks the reading.

"OL" will show if reading outside wet bulb charts. Re-take the

measurement.

5 For ODDB, clip the ATA1 thermocouple to the side of the

condenser. Once reading is stable, press ENTER. "OL" will show if

reading outside dry bulb charts. Re-take the measurement. For

best results, keep the ATA1 away from direct sunlight.

6 Once both IDWB and ODDB are set, theTarget Superheat will

display in the lower left corner of the display. If the inputted IDWB

and ODDB temperatures indicate theTarget Superheat is negative,

"OL" will display in the lower left corner.

7 To change either IDWB or ODDB, press the UP/DOWN arrow button

until the label (IDWB or ODDB) you wish to change is blinking.

Press ENTER and the value will begin to blink. Re-take the

measurement and press ENTER to lock in the new measurement.

The newly calculated Target Superheat will be displayed in the

lower left corner.

8 To clear both IDWB and ODDB at the same time, press the ENTER

button.This will only work when a Target Superheat or "OL" is

displayed in the lower left corner.

Pulling a Vacuum (model SMAN3)

Follow all manufacturers’ evacuation

procedures over those in this manual.

Note: larger systems may take much longer to

reach a deep vacuum and a dierent evacuation

method or equipment might be preferred.

1 Connect your SMAN3 inline between your vacuum pump and the

system, then power on your SMAN3.

2 Draw a vacuum on the system.The SMAN will automatically

sense the negative pressure and display the vacuum in microns of

mercury. Indicators for increasing or decreasing pressure will be

shown.

3 Press Alarm button to toggle between the High (Hi) alarm, the

Low (Lo) alarm and no alarm. (No display for no alarm.)

(Note: The stopwatch will start when an alarm is selected.

Pressing Alarm will reset the stopwatch.)

4 When the rate of change in pressure is zero or near zero, Stable

will appear in the lower left corner of the display.

Additional Tips:

In order to achieve a deep vacuum as quickly as possible the

following practices are suggested.

1 Use the shortest hoses with the largest diameter available.

2 Remove Schrader cores and core depressors. Core removal tools

like the "MegaFlow Valve Core RemovalTool" can be purchased to

help with this process.

3 Inspect the rubber seals at both ends of your hoses for damage

that may result in leakage.

4 Do not use hoses with low loss ttings when evacuating or

pulling a vacuum on a system.

Set Vacuum Alarms (SMAN3)

1 Hold the Alarm button for one second to enter Alarm Set mode.

2 Press the Alarm button to toggle between Alarm Hi and Lo.

3 Use arrow buttons to adjust each alarm value.

4 Press ENTER to lock both alarms in.

T1 T2

Atmospheric

Pressure

Superheat

Subcooling

T1 T2 Direct Saturation

Target

Superheat

CAL CAL

Tes t

Pressure

AUTO

OFF

Refrigerant ON/OFF

Enter

Units

Alarm

Digital Manifold + Vacuum Gauge

SMAN3

ODDB

HH:MM:SS

Psig

Kpa

inHg

cmHg

Psig

Kpa

inHg

cmHg

SHT1

VSAT

APO

Microns

HiLo

SetStable

Alarm

IDWB

Target SH

R-

°F°C

SCT2

LSAT

°F°C

1110 12

What is Superheat and Subcooling?

Why Do I Need to Measure It?

Superheat is the difference between the

actual temperature of the refrigerant (gas) as

it leaves the evaporator and the boiling point

of the refrigerant. After boiling, the refrigerant

continues to heat up. The number of degrees it

“heats up” after boiling is called the superheat.

Under worst case conditions (low load for xed

orice systems), the refrigerant in the evaporator

boils o near the end of the evaporator coil. To

make sure liquid doesn’t enter the compressor

under the worst case condition (low load),

the refrigerator or A/C manufacturers publish

charts indicating what the superheat should be

at a given indoor wet bulb measurement and

outdoor air temperature.

Measuring superheat is your best indication

on a fixed orifice system of the proper

refrigerant charge and operating conditions.

If everything else is working properly and the

actual superheat is too high, add refrigerant. If

it’s too low, evacuate refrigerant.

Subcooling is the dierence between the

boiling point of the refrigerant in the condenser

and the actual temperature of the refrigerant

as it leaves the condenser. The degrees that the

refrigerant“cools down”below the boiling point

is the subcooling. Under worst case scenario

(low load for TXV) the subcooling will continue

to rise. If the subcooling rises too high, liquid

may be backed into the compressor causing

damage and catastrophic failure. See www.

eldpiece.com for more technical articles.

Location of Subcooling Test

Location of Superheat Test

Speciﬁcations

Accuracy: Stated accuracy @ 73°F±9°F (23°C±5°C), <75%RH

Temperature coecient: 0.1 x (specied accuracy) per °C (0°C to

18°C, 28°C to 50°C), per 0.6°F (32°F to 64°F, 82°F to 122°F)

Operating environment: 32°F to 122°F (0°C to 50°C) at <75%

relative humidity

Storage temperature: -4°F to 140°F (-20°C to 60°C), 0 to 80% RH

(with battery removed)

Display size: 5 inches (diagonal)

Backlight: Blue (On for 1 minute unless turned o manually)

Battery: 6 x AA (Battery life below based on alkaline type)

Battery life (SMAN2): Approx. 500 hours (without backlight)

Battery life (SMAN3): Approx. 135 hours (without backlight)

Low battery indication: is displayed when the battery

voltage drops below the operating level

Auto Shut o: 30 minutes of inactivity when APO is activated

Over range: "OL" or "-OL" is displayed

Weight: 3.05 lbs (1.38 kg)

Pressure

Connector Type: Standard 1/4 NPT male are tting

Range: 29”HgV to 500Psig (English), 74 cmHgV to 0 to 4000KPa

(Metric)

Resolution: 0.1 psi/inHg; 1 kPa/cmHg

Accuracy: 29”HgV to 0”HgV: ±0.2”HgV

74 cmHgV to 0 cmHgV: ±0.4 cmHgV

0 to 200 Psig: ±1 Psi,0 to 1378 KPa: ±7 KPa

200 to 500 Psig: ±0.3%+1 Psi, 1378 to 3447KPa: ±0.3%+7 Kpa

Maximum Overload pressure: 800 psig

Units: Psig, kPa, inHg, and cmHg

Microns for Vacuum (SMAN3 only)

Connector Type: Standard 1/4 NPT male are tting

Range: 50 to 9999 microns of mercury

Resolution: 1 micron (50 to 2000 microns), 250 microns (2001 to

5000 microns), 500 microns (5001 to 8000 microns), 1000 microns

(8001 to 9999 microns)

Accuracy: ±10% or ±10 microns, whichever is greater (50 to 1000

microns)

Maximum Overload pressure: 500 psig

Units: Microns of mercury

Temperature

Sensor type: K-Type thermocouple

Range: -76°F to 999.9°F (-60°C to 537.0°C)

Resolution: 0.1°F/°C

Accuracy: ±(1.0°F) -76°F to 199.9°F; ±(0.5°C) -60°C to 93°C

±(2.0°F) 200°F to 999.9°F; ±(1.0°C) 93°C to 537.0°C

Note: All accuracies are after a eld calibration.

Refrigerants

The P-T charts of the following refrigerants come pre-programmed

into your SMAN. In numerical order:

R11, R113, R114, R12, R123, R124, R125, R13, R134A, R22, R23,

R401A(MP39), R401B, R402A, R402B, R404A, R406A, R407A, R407C,

R408A, R409A, R410A, R414B (Hotshot), R416A, R417A, R420A,

R421A, R421B,R422A, R422B(NU22B), R422C(Oneshot), R422D, R424A,

R434A(RS-45), R438A(MO99), R500, R502, R503, R507A

Maintenance

Clean the exterior with a dry cloth. Do not

use liquid.

Battery Replacement

The battery must be replaced when the

battery life indicator is empty. Turn your

SMAN o and replace with 6 AA batteries.

Cleaning the Sensors (SMAN3)

Over time, the vacuum sensor of the SMAN3

may become contaminated with dirt, oil, and

other contaminents introduced from pulling

vacuums.

1 Never use an object such as a cotton swab to clean the sensor,

you may cause damage to the sensor.

2 Open all knobs/valves, and cap all the ports except for the center

port.

3 Drop enough Isopropyl (rubbing) alcohol into the uncapped

port using an eye dropper or funnel so that it can ush out

contaminents.

4 Cap central port and gently shake your SMAN upside down to

clean sensor.

5 Turn right side up. Open a port to pour out the rubbing alcohol

and open all ports to allow sensors to dry out; usually an hour or

so.

Calibration

Temperature

To calibrate your SMAN temperature

thermocouples, adjust the pot on the front of

the meter labeledT1 Cal orT2 Cal.The best way

to calibrate is to match to a known temperature.

Ice water is very close to 32°F and is readily

available. Accuracies of one degree or better

are easily obtained.

1 Stabilize a large cup of ice water by stirring. Pure, distilled water

will be the most accurate.

2 Press the circular button until your SMAN enters Direct

Temperature (T1T2) mode.

3 Immerse the temp probe in ice water fromT1 and adjust the

T1 Cal pot with a athead screwdriver and let it stabilize, keep

stirring.

4 Repeat Step 3 for temp probe inT2.

Pressure

To calibrate your SMAN pressure sensors to

atmospheric pressure, ensure that your SMAN

is disconnected from any pressure source and

at equilibrium with the ambient pressure.

1 SMAN must be in Superheat/Subcooling, Saturation, or T1 T2

Direct mode.

2 Press the CAL Atmospheric Pressure button and your SMAN will

set the zero point of pressure to the ambient pressure.

Advanced Pressure Calibration

Your SMAN has the ability to perform a linear

adjustment of the pressure sensors based on

refrigerant type, temperature, and pressure.

1 Press circular button until your SMAN entersT1 T2 Direct mode.

2 Plug in a K-type thermocouple intoT1. (A bead type

thermocouple is recommended.)

3 Connect the SMAN to a refrigerant cylinder of known refrigerant

using an EPA approved service hose. Be sure to open both HIGH

and LOW side valves on your manifold and cap the unused

ports. (If caps are not available you can connect both ends of a

refrigerant hose to the two unused caps. Note you will lose some

refrigerant into the hose using this method.)

4 Press the REFRIGERANT button to match the refrigerant of the

cylinder you are using.

5 Attach bead-type thermocouple to the side of the cylinder using

tape. It is recommended to attach in the middle of the cylinder.

Important: Let the temperature of the thermocouple stabilize to

the refrigerant temperature for 1 to 2 minutes or until stable.

6 Open the refrigerant cylinder. The pressure inside cylinder should

now be displayed on both HIGH and LOW side pressure sensors.

7 Press the CAL Test Pressure button.

Your SMAN refers to the built-in P-T charts

to compare the temperature of the refrigerant

to the vapor saturation temperature. If the

pressures on your SMAN are within 3psi of the

pressure corresponding to the vapor saturation

temperature, your SMAN will linearly adjust the

pressure readings to match the P-T chart.

Limited Warranty

This meter is warranted against defects in

material or workmanship for one year from

date of purchase. Fieldpiece will replace or

repair the defective unit, at its option, subject

to verication of the defect.

This warranty does not apply to defects

resulting from abuse, neglect, accident,

unauthorized repair, alteration, or unreasonable

use of the instrument.

Any implied warranties arising from the sale of

a Fieldpiece product, including but not limited

to implied warranties of merchantability and

tness for a particular purpose, are limited to

the above. Fieldpiece shall not be liable for loss

of use of the instrument or other incidental or

consequential damages, expenses, or economic

loss, or for any claim of such damage, expenses,

or economic loss.

State laws vary. The above limitations or

exclusions may not apply to you.

Safety Information Obtaining Service

Call Fieldpiece Instruments for one-price-

x-all warranty service pricing. Send check or

money order for the amount quoted. Send

your digital manifold, freight prepaid, to

Fieldpiece Instruments. Send proof of date and

location of purchase for in-warranty service.

The meter will be repaired or replaced, at the

option of Fieldpiece, and returned via least cost

transportation.

www.fieldpiece.com

High Side

Low Side

TXV

Compressor

Direction of

Refrigerant

Flow

Condenser

Evaporator

!WARNINGS

DO NOT APPLY MORETHAN 800 PSITO ANY PORT ONTHE MANIFOLD.

FOLLOW ALL EQUIPMENT MANUFACTURER'S TESTING PROCEDURES

ABOVETHOSE INTHIS MANUAL IN REGARDS TO PROPERLY

SERVICING THEIR EQUIPMENT.

What is Superheat and Subcooling?

Why Do I Need to Measure It?

Superheat is the difference between the

actual temperature of the refrigerant (gas) as

it leaves the evaporator and the boiling point

of the refrigerant. After boiling, the refrigerant

continues to heat up. The number of degrees it

“heats up” after boiling is called the superheat.

Under worst case conditions (low load for xed

orice systems), the refrigerant in the evaporator

boils o near the end of the evaporator coil. To

make sure liquid doesn’t enter the compressor

under the worst case condition (low load),

the refrigerator or A/C manufacturers publish

charts indicating what the superheat should be

at a given indoor wet bulb measurement and

outdoor air temperature.

Measuring superheat is your best indication

on a fixed orifice system of the proper

refrigerant charge and operating conditions.

If everything else is working properly and the

actual superheat is too high, add refrigerant. If

it’s too low, evacuate refrigerant.

Subcooling is the dierence between the

boiling point of the refrigerant in the condenser

and the actual temperature of the refrigerant

as it leaves the condenser. The degrees that the

refrigerant“cools down”below the boiling point

is the subcooling. Under worst case scenario

(low load for TXV) the subcooling will continue

to rise. If the subcooling rises too high, liquid

may be backed into the compressor causing

damage and catastrophic failure. See www.

eldpiece.com for more technical articles.

Location of Subcooling Test

Location of Superheat Test

Speciﬁcations

Accuracy: Stated accuracy @ 73°F±9°F (23°C±5°C), <75%RH

Temperature coecient: 0.1 x (specied accuracy) per °C (0°C to

18°C, 28°C to 50°C), per 0.6°F (32°F to 64°F, 82°F to 122°F)

Operating environment: 32°F to 122°F (0°C to 50°C) at <75%

relative humidity

Storage temperature: -4°F to 140°F (-20°C to 60°C), 0 to 80% RH

(with battery removed)

Display size: 5 inches (diagonal)

Backlight: Blue (On for 1 minute unless turned o manually)

Battery: 6 x AA (Battery life below based on alkaline type)

Battery life (SMAN2): Approx. 500 hours (without backlight)

Battery life (SMAN3): Approx. 135 hours (without backlight)

Low battery indication: is displayed when the battery

voltage drops below the operating level

Auto Shut o: 30 minutes of inactivity when APO is activated

Over range: "OL" or "-OL" is displayed

Weight: 3.05 lbs (1.38 kg)

Pressure

Connector Type: Standard 1/4 NPT male are tting

Range: 29”HgV to 500Psig (English), 74 cmHgV to 0 to 4000KPa

(Metric)

Resolution: 0.1 psi/inHg; 1 kPa/cmHg

Accuracy: 29”HgV to 0”HgV: ±0.2”HgV

74 cmHgV to 0 cmHgV: ±0.4 cmHgV

0 to 200 Psig: ±1 Psi,0 to 1378 KPa: ±7 KPa

200 to 500 Psig: ±0.3%+1 Psi, 1378 to 3447KPa: ±0.3%+7 Kpa

Maximum Overload pressure: 800 psig

Units: Psig, kPa, inHg, and cmHg

Microns for Vacuum (SMAN3 only)

Connector Type: Standard 1/4 NPT male are tting

Range: 50 to 9999 microns of mercury

Resolution: 1 micron (50 to 2000 microns), 250 microns (2001 to

5000 microns), 500 microns (5001 to 8000 microns), 1000 microns

(8001 to 9999 microns)

Accuracy: ±10% or ±10 microns, whichever is greater (50 to 1000

microns)

Maximum Overload pressure: 500 psig

Units: Microns of mercury

Temperature

Sensor type: K-Type thermocouple

Range: -76°F to 999.9°F (-60°C to 537.0°C)

Resolution: 0.1°F/°C

Accuracy: ±(1.0°F) -76°F to 199.9°F; ±(0.5°C) -60°C to 93°C

±(2.0°F) 200°F to 999.9°F; ±(1.0°C) 93°C to 537.0°C

Note: All accuracies are after a eld calibration.

Refrigerants

The P-T charts of the following refrigerants come pre-programmed

into your SMAN. In numerical order:

R11, R113, R114, R12, R123, R124, R125, R13, R134A, R22, R23,

R401A(MP39), R401B, R402A, R402B, R404A, R406A, R407A, R407C,

R408A, R409A, R410A, R414B (Hotshot), R416A, R417A, R420A,

R421A, R421B,R422A, R422B(NU22B), R422C(Oneshot), R422D, R424A,

R434A(RS-45), R438A(MO99), R500, R502, R503, R507A

Maintenance

Clean the exterior with a dry cloth. Do not

use liquid.

Battery Replacement

The battery must be replaced when the

battery life indicator is empty. Turn your

SMAN o and replace with 6 AA batteries.

Cleaning the Sensors (SMAN3)

Over time, the vacuum sensor of the SMAN3

may become contaminated with dirt, oil, and

other contaminents introduced from pulling

vacuums.

1 Never use an object such as a cotton swab to clean the sensor,

you may cause damage to the sensor.

2 Open all knobs/valves, and cap all the ports except for the center

port.

3 Drop enough Isopropyl (rubbing) alcohol into the uncapped

port using an eye dropper or funnel so that it can ush out

contaminents.

4 Cap central port and gently shake your SMAN upside down to

clean sensor.

5 Turn right side up. Open a port to pour out the rubbing alcohol

and open all ports to allow sensors to dry out; usually an hour or

so.

Calibration

Temperature

To calibrate your SMAN temperature

thermocouples, adjust the pot on the front of

the meter labeledT1 Cal orT2 Cal.The best way

to calibrate is to match to a known temperature.

Ice water is very close to 32°F and is readily

available. Accuracies of one degree or better

are easily obtained.

1 Stabilize a large cup of ice water by stirring. Pure, distilled water

will be the most accurate.

2 Press the circular button until your SMAN enters Direct

Temperature (T1T2) mode.

3 Immerse the temp probe in ice water fromT1 and adjust the

T1 Cal pot with a athead screwdriver and let it stabilize, keep

stirring.

4 Repeat Step 3 for temp probe inT2.

Pressure

To calibrate your SMAN pressure sensors to

atmospheric pressure, ensure that your SMAN

is disconnected from any pressure source and

at equilibrium with the ambient pressure.

1 SMAN must be in Superheat/Subcooling, Saturation, or T1 T2

Direct mode.

2 Press the CAL Atmospheric Pressure button and your SMAN will

set the zero point of pressure to the ambient pressure.

Advanced Pressure Calibration

Your SMAN has the ability to perform a linear

adjustment of the pressure sensors based on

refrigerant type, temperature, and pressure.

1 Press circular button until your SMAN enters T1T2 Direct mode.

2 Plug in a K-type thermocouple intoT1. (A bead type

thermocouple is recommended.)

3 Connect the SMAN to a refrigerant cylinder of known refrigerant

using an EPA approved service hose. Be sure to open both HIGH

and LOW side valves on your manifold and cap the unused

ports. (If caps are not available you can connect both ends of a

refrigerant hose to the two unused caps. Note you will lose some

refrigerant into the hose using this method.)

4 Press the REFRIGERANT button to match the refrigerant of the

cylinder you are using.

5 Attach bead-type thermocouple to the side of the cylinder using

tape. It is recommended to attach in the middle of the cylinder.

Important: Let the temperature of the thermocouple stabilize to

the refrigerant temperature for 1 to 2 minutes or until stable.

6 Open the refrigerant cylinder. The pressure inside cylinder should

now be displayed on both HIGH and LOW side pressure sensors.

7 Press the CAL Test Pressure button.

Your SMAN refers to the built-in P-T charts

to compare the temperature of the refrigerant

to the vapor saturation temperature. If the

pressures on your SMAN are within 3psi of the

pressure corresponding to the vapor saturation

temperature, your SMAN will linearly adjust the

pressure readings to match the P-T chart.

Limited Warranty

This meter is warranted against defects in

material or workmanship for one year from

date of purchase. Fieldpiece will replace or

repair the defective unit, at its option, subject

to verication of the defect.

This warranty does not apply to defects

resulting from abuse, neglect, accident,

unauthorized repair, alteration, or unreasonable

use of the instrument.

Any implied warranties arising from the sale of

a Fieldpiece product, including but not limited

to implied warranties of merchantability and

tness for a particular purpose, are limited to

the above. Fieldpiece shall not be liable for loss

of use of the instrument or other incidental or

consequential damages, expenses, or economic

loss, or for any claim of such damage, expenses,

or economic loss.

State laws vary. The above limitations or

exclusions may not apply to you.

Safety Information Obtaining Service

Call Fieldpiece Instruments for one-price-

x-all warranty service pricing. Send check or

money order for the amount quoted. Send

your digital manifold, freight prepaid, to

Fieldpiece Instruments. Send proof of date and

location of purchase for in-warranty service.

The meter will be repaired or replaced, at the

option of Fieldpiece, and returned via least cost

transportation.

www.fieldpiece.com

High Side

Low Side

TXV

Compressor

Direction of

Refrigerant

Flow

Condenser

Evaporator

!WARNINGS

DO NOT APPLY MORETHAN 800 PSITO ANY PORT ONTHE MANIFOLD.

FOLLOW ALL EQUIPMENT MANUFACTURER'S TESTING PROCEDURES

ABOVETHOSE INTHIS MANUAL IN REGARDS TO PROPERLY

SERVICING THEIR EQUIPMENT.

What is Superheat and Subcooling?

Why Do I Need to Measure It?

Superheat is the difference between the

actual temperature of the refrigerant (gas) as

it leaves the evaporator and the boiling point

of the refrigerant. After boiling, the refrigerant

continues to heat up. The number of degrees it

“heats up” after boiling is called the superheat.

Under worst case conditions (low load for xed

orice systems), the refrigerant in the evaporator

boils o near the end of the evaporator coil. To

make sure liquid doesn’t enter the compressor

under the worst case condition (low load),

the refrigerator or A/C manufacturers publish

charts indicating what the superheat should be

at a given indoor wet bulb measurement and

outdoor air temperature.

Measuring superheat is your best indication

on a fixed orifice system of the proper

refrigerant charge and operating conditions.

If everything else is working properly and the

actual superheat is too high, add refrigerant. If

it’s too low, evacuate refrigerant.

Subcooling is the dierence between the

boiling point of the refrigerant in the condenser

and the actual temperature of the refrigerant

as it leaves the condenser. The degrees that the

refrigerant“cools down”below the boiling point

is the subcooling. Under worst case scenario

(low load for TXV) the subcooling will continue

to rise. If the subcooling rises too high, liquid

may be backed into the compressor causing

damage and catastrophic failure. See www.

eldpiece.com for more technical articles.

Location of Subcooling Test

Location of Superheat Test

Speciﬁcations

Accuracy: Stated accuracy @ 73°F±9°F (23°C±5°C), <75%RH

Temperature coecient: 0.1 x (specied accuracy) per °C (0°C to

18°C, 28°C to 50°C), per 0.6°F (32°F to 64°F, 82°F to 122°F)

Operating environment: 32°F to 122°F (0°C to 50°C) at <75%

relative humidity

Storage temperature: -4°F to 140°F (-20°C to 60°C), 0 to 80% RH

(with battery removed)

Display size: 5 inches (diagonal)

Backlight: Blue (On for 1 minute unless turned o manually)

Battery: 6 x AA (Battery life below based on alkaline type)

Battery life (SMAN2): Approx. 500 hours (without backlight)

Battery life (SMAN3): Approx. 135 hours (without backlight)

Low battery indication: is displayed when the battery

voltage drops below the operating level

Auto Shut o: 30 minutes of inactivity when APO is activated

Over range: "OL" or "-OL" is displayed

Weight: 3.05 lbs (1.38 kg)

Pressure

Connector Type: Standard 1/4 NPT male are tting

Range: 29”HgV to 500Psig (English), 74 cmHgV to 0 to 4000KPa

(Metric)

Resolution: 0.1 psi/inHg; 1 kPa/cmHg

Accuracy: 29”HgV to 0”HgV: ±0.2”HgV

74 cmHgV to 0 cmHgV: ±0.4 cmHgV

0 to 200 Psig: ±1 Psi,0 to 1378 KPa: ±7 KPa

200 to 500 Psig: ±0.3%+1 Psi, 1378 to 3447KPa: ±0.3%+7 Kpa

Maximum Overload pressure: 800 psig

Units: Psig, kPa, inHg, and cmHg

Microns for Vacuum (SMAN3 only)

Connector Type: Standard 1/4 NPT male are tting

Range: 50 to 9999 microns of mercury

Resolution: 1 micron (50 to 2000 microns), 250 microns (2001 to

5000 microns), 500 microns (5001 to 8000 microns), 1000 microns

(8001 to 9999 microns)

Accuracy: ±10% or ±10 microns, whichever is greater (50 to 1000

microns)

Maximum Overload pressure: 500 psig

Units: Microns of mercury

Temperature

Sensor type: K-Type thermocouple

Range: -76°F to 999.9°F (-60°C to 537.0°C)

Resolution: 0.1°F/°C

Accuracy: ±(1.0°F) -76°F to 199.9°F; ±(0.5°C) -60°C to 93°C

±(2.0°F) 200°F to 999.9°F; ±(1.0°C) 93°C to 537.0°C

Note: All accuracies are after a eld calibration.

Refrigerants

The P-T charts of the following refrigerants come pre-programmed

into your SMAN. In numerical order:

R11, R113, R114, R12, R123, R124, R125, R13, R134A, R22, R23,

R401A(MP39), R401B, R402A, R402B, R404A, R406A, R407A, R407C,

R408A, R409A, R410A, R414B (Hotshot), R416A, R417A, R420A,

R421A, R421B,R422A, R422B(NU22B), R422C(Oneshot), R422D, R424A,

R434A(RS-45), R438A(MO99), R500, R502, R503, R507A

Maintenance

Clean the exterior with a dry cloth. Do not

use liquid.

Battery Replacement

The battery must be replaced when the

battery life indicator is empty. Turn your

SMAN o and replace with 6 AA batteries.

Cleaning the Sensors (SMAN3)

Over time, the vacuum sensor of the SMAN3

may become contaminated with dirt, oil, and

other contaminents introduced from pulling

vacuums.

1 Never use an object such as a cotton swab to clean the sensor,

you may cause damage to the sensor.

2 Open all knobs/valves, and cap all the ports except for the center

port.

3 Drop enough Isopropyl (rubbing) alcohol into the uncapped

port using an eye dropper or funnel so that it can ush out

contaminents.

4 Cap central port and gently shake your SMAN upside down to

clean sensor.

5 Turn right side up. Open a port to pour out the rubbing alcohol

and open all ports to allow sensors to dry out; usually an hour or

so.

Calibration

Temperature

To calibrate your SMAN temperature

thermocouples, adjust the pot on the front of

the meter labeledT1 Cal orT2 Cal.The best way

to calibrate is to match to a known temperature.

Ice water is very close to 32°F and is readily

available. Accuracies of one degree or better

are easily obtained.

1 Stabilize a large cup of ice water by stirring. Pure, distilled water

will be the most accurate.

2 Press the circular button until your SMAN enters Direct

Temperature (T1 T2) mode.

3 Immerse the temp probe in ice water fromT1 and adjust the

T1 Cal pot with a athead screwdriver and let it stabilize, keep

stirring.

4 Repeat Step 3 for temp probe in T2.

Pressure

To calibrate your SMAN pressure sensors to

atmospheric pressure, ensure that your SMAN

is disconnected from any pressure source and

at equilibrium with the ambient pressure.

1 SMAN must be in Superheat/Subcooling, Saturation, orT1 T2

Direct mode.

2 Press the CAL Atmospheric Pressure button and your SMAN will

set the zero point of pressure to the ambient pressure.

Advanced Pressure Calibration

Your SMAN has the ability to perform a linear

adjustment of the pressure sensors based on

refrigerant type, temperature, and pressure.

1 Press circular button until your SMAN enters T1 T2 Direct mode.

2 Plug in a K-type thermocouple intoT1. (A bead type

thermocouple is recommended.)

3 Connect the SMAN to a refrigerant cylinder of known refrigerant

using an EPA approved service hose. Be sure to open both HIGH

and LOW side valves on your manifold and cap the unused

ports. (If caps are not available you can connect both ends of a

refrigerant hose to the two unused caps. Note you will lose some

refrigerant into the hose using this method.)

4 Press the REFRIGERANT button to match the refrigerant of the

cylinder you are using.

5 Attach bead-type thermocouple to the side of the cylinder using

tape. It is recommended to attach in the middle of the cylinder.

Important: Let the temperature of the thermocouple stabilize to

the refrigerant temperature for 1 to 2 minutes or until stable.

6 Open the refrigerant cylinder. The pressure inside cylinder should

now be displayed on both HIGH and LOW side pressure sensors.

7 Press the CAL Test Pressure button.

Your SMAN refers to the built-in P-T charts

to compare the temperature of the refrigerant

to the vapor saturation temperature. If the

pressures on your SMAN are within 3psi of the

pressure corresponding to the vapor saturation

temperature, your SMAN will linearly adjust the

pressure readings to match the P-T chart.

Limited Warranty

This meter is warranted against defects in

material or workmanship for one year from

date of purchase. Fieldpiece will replace or

repair the defective unit, at its option, subject

to verication of the defect.

This warranty does not apply to defects

resulting from abuse, neglect, accident,

unauthorized repair, alteration, or unreasonable

use of the instrument.

Any implied warranties arising from the sale of

a Fieldpiece product, including but not limited

to implied warranties of merchantability and

tness for a particular purpose, are limited to

the above. Fieldpiece shall not be liable for loss

of use of the instrument or other incidental or

consequential damages, expenses, or economic

loss, or for any claim of such damage, expenses,

or economic loss.

State laws vary. The above limitations or

exclusions may not apply to you.

Safety Information Obtaining Service

Call Fieldpiece Instruments for one-price-

x-all warranty service pricing. Send check or

money order for the amount quoted. Send

your digital manifold, freight prepaid, to

Fieldpiece Instruments. Send proof of date and

location of purchase for in-warranty service.

The meter will be repaired or replaced, at the

option of Fieldpiece, and returned via least cost

transportation.

www.fieldpiece.com

High Side

Low Side

TXV

Compressor

Direction of

Refrigerant

Flow

Condenser

Evaporator

!WARNINGS

DO NOT APPLY MORE THAN 800 PSITO ANY PORT ONTHE MANIFOLD.

FOLLOW ALL EQUIPMENT MANUFACTURER'S TESTING PROCEDURES

ABOVETHOSE IN THIS MANUAL IN REGARDS TO PROPERLY

SERVICING THEIR EQUIPMENT.

What is Superheat and Subcooling?

Why Do I Need to Measure It?

Superheat is the difference between the

actual temperature of the refrigerant (gas) as

it leaves the evaporator and the boiling point

of the refrigerant. After boiling, the refrigerant

continues to heat up. The number of degrees it

“heats up” after boiling is called the superheat.

Under worst case conditions (low load for xed

orice systems), the refrigerant in the evaporator

boils o near the end of the evaporator coil. To

make sure liquid doesn’t enter the compressor

under the worst case condition (low load),

the refrigerator or A/C manufacturers publish

charts indicating what the superheat should be

at a given indoor wet bulb measurement and

outdoor air temperature.

Measuring superheat is your best indication

on a fixed orifice system of the proper

refrigerant charge and operating conditions.

If everything else is working properly and the

actual superheat is too high, add refrigerant. If

it’s too low, evacuate refrigerant.

Subcooling is the dierence between the

boiling point of the refrigerant in the condenser

and the actual temperature of the refrigerant

as it leaves the condenser. The degrees that the

refrigerant“cools down”below the boiling point

is the subcooling. Under worst case scenario

(low load for TXV) the subcooling will continue

to rise. If the subcooling rises too high, liquid

may be backed into the compressor causing

damage and catastrophic failure. See www.

eldpiece.com for more technical articles.

Location of Subcooling Test

Location of Superheat Test

Speciﬁcations

Accuracy: Stated accuracy @ 73°F±9°F (23°C±5°C), <75%RH

Temperature coecient: 0.1 x (specied accuracy) per °C (0°C to

18°C, 28°C to 50°C), per 0.6°F (32°F to 64°F, 82°F to 122°F)

Operating environment: 32°F to 122°F (0°C to 50°C) at <75%

relative humidity

Storage temperature: -4°F to 140°F (-20°C to 60°C), 0 to 80% RH

(with battery removed)

Display size: 5 inches (diagonal)

Backlight: Blue (On for 1 minute unless turned o manually)

Battery: 6 x AA (Battery life below based on alkaline type)

Battery life (SMAN2): Approx. 500 hours (without backlight)

Battery life (SMAN3): Approx. 135 hours (without backlight)

Low battery indication: is displayed when the battery

voltage drops below the operating level

Auto Shut o: 30 minutes of inactivity when APO is activated

Over range: "OL" or "-OL" is displayed

Weight: 3.05 lbs (1.38 kg)

Pressure

Connector Type: Standard 1/4 NPT male are tting

Range: 29”HgV to 500Psig (English), 74 cmHgV to 0 to 4000KPa

(Metric)

Resolution: 0.1 psi/inHg; 1 kPa/cmHg

Accuracy: 29”HgV to 0”HgV: ±0.2”HgV

74 cmHgV to 0 cmHgV: ±0.4 cmHgV

0 to 200 Psig: ±1 Psi,0 to 1378 KPa: ±7 KPa

200 to 500 Psig: ±0.3%+1 Psi, 1378 to 3447KPa: ±0.3%+7 Kpa

Maximum Overload pressure: 800 psig

Units: Psig, kPa, inHg, and cmHg

Microns for Vacuum (SMAN3 only)

Connector Type: Standard 1/4 NPT male are tting

Range: 50 to 9999 microns of mercury

Resolution: 1 micron (50 to 2000 microns), 250 microns (2001 to

5000 microns), 500 microns (5001 to 8000 microns), 1000 microns

(8001 to 9999 microns)

Accuracy: ±10% or ±10 microns, whichever is greater (50 to 1000

microns)

Maximum Overload pressure: 500 psig

Units: Microns of mercury

Temperature

Sensor type: K-Type thermocouple

Range: -76°F to 999.9°F (-60°C to 537.0°C)

Resolution: 0.1°F/°C

Accuracy: ±(1.0°F) -76°F to 199.9°F; ±(0.5°C) -60°C to 93°C

±(2.0°F) 200°F to 999.9°F; ±(1.0°C) 93°C to 537.0°C

Note: All accuracies are after a eld calibration.

Refrigerants

The P-T charts of the following refrigerants come pre-programmed

into your SMAN. In numerical order:

R11, R113, R114, R12, R123, R124, R125, R13, R134A, R22, R23,

R401A(MP39), R401B, R402A, R402B, R404A, R406A, R407A, R407C,

R408A, R409A, R410A, R414B (Hotshot), R416A, R417A, R420A,

R421A, R421B,R422A, R422B(NU22B), R422C(Oneshot), R422D, R424A,

R434A(RS-45), R438A(MO99), R500, R502, R503, R507A

Maintenance

Clean the exterior with a dry cloth. Do not

use liquid.

Battery Replacement

The battery must be replaced when the

battery life indicator is empty. Turn your

SMAN o and replace with 6 AA batteries.

Cleaning the Sensors (SMAN3)

Over time, the vacuum sensor of the SMAN3

may become contaminated with dirt, oil, and

other contaminents introduced from pulling

vacuums.

1 Never use an object such as a cotton swab to clean the sensor,

you may cause damage to the sensor.

2 Open all knobs/valves, and cap all the ports except for the center

port.

3 Drop enough Isopropyl (rubbing) alcohol into the uncapped

port using an eye dropper or funnel so that it can ush out

contaminents.

4 Cap central port and gently shake your SMAN upside down to

clean sensor.

5 Turn right side up. Open a port to pour out the rubbing alcohol

and open all ports to allow sensors to dry out; usually an hour or

so.

Calibration

Temperature

To calibrate your SMAN temperature

thermocouples, adjust the pot on the front of

the meter labeledT1 Cal orT2 Cal.The best way

to calibrate is to match to a known temperature.

Ice water is very close to 32°F and is readily

available. Accuracies of one degree or better

are easily obtained.

1 Stabilize a large cup of ice water by stirring. Pure, distilled water

will be the most accurate.

2 Press the circular button until your SMAN enters Direct

Temperature (T1 T2) mode.

3 Immerse the temp probe in ice water fromT1 and adjust the

T1 Cal pot with a athead screwdriver and let it stabilize, keep

stirring.

4 Repeat Step 3 for temp probe in T2.

Pressure

To calibrate your SMAN pressure sensors to

atmospheric pressure, ensure that your SMAN

is disconnected from any pressure source and

at equilibrium with the ambient pressure.

1 SMAN must be in Superheat/Subcooling, Saturation, orT1 T2

Direct mode.

2 Press the CAL Atmospheric Pressure button and your SMAN will

set the zero point of pressure to the ambient pressure.

Advanced Pressure Calibration

Your SMAN has the ability to perform a linear

adjustment of the pressure sensors based on

refrigerant type, temperature, and pressure.

1 Press circular button until your SMAN enters T1 T2 Direct mode.

2 Plug in a K-type thermocouple into T1. (A bead type

thermocouple is recommended.)

3 Connect the SMAN to a refrigerant cylinder of known refrigerant

using an EPA approved service hose. Be sure to open both HIGH

and LOW side valves on your manifold and cap the unused

ports. (If caps are not available you can connect both ends of a

refrigerant hose to the two unused caps. Note you will lose some

refrigerant into the hose using this method.)

4 Press the REFRIGERANT button to match the refrigerant of the

cylinder you are using.

5 Attach bead-type thermocouple to the side of the cylinder using

tape. It is recommended to attach in the middle of the cylinder.

Important: Let the temperature of the thermocouple stabilize to

the refrigerant temperature for 1 to 2 minutes or until stable.

6 Open the refrigerant cylinder. The pressure inside cylinder should

now be displayed on both HIGH and LOW side pressure sensors.

7 Press the CAL Test Pressure button.

Your SMAN refers to the built-in P-T charts

to compare the temperature of the refrigerant

to the vapor saturation temperature. If the

pressures on your SMAN are within 3psi of the

pressure corresponding to the vapor saturation

temperature, your SMAN will linearly adjust the

pressure readings to match the P-T chart.

Limited Warranty

This meter is warranted against defects in

material or workmanship for one year from

date of purchase. Fieldpiece will replace or

repair the defective unit, at its option, subject

to verication of the defect.

This warranty does not apply to defects

resulting from abuse, neglect, accident,

unauthorized repair, alteration, or unreasonable

use of the instrument.

Any implied warranties arising from the sale of

a Fieldpiece product, including but not limited

to implied warranties of merchantability and

tness for a particular purpose, are limited to

the above. Fieldpiece shall not be liable for loss

of use of the instrument or other incidental or

consequential damages, expenses, or economic

loss, or for any claim of such damage, expenses,

or economic loss.

State laws vary. The above limitations or

exclusions may not apply to you.

Safety Information Obtaining Service

Call Fieldpiece Instruments for one-price-

x-all warranty service pricing. Send check or

money order for the amount quoted. Send

your digital manifold, freight prepaid, to

Fieldpiece Instruments. Send proof of date and

location of purchase for in-warranty service.

The meter will be repaired or replaced, at the

option of Fieldpiece, and returned via least cost

transportation.

www.fieldpiece.com

High Side

Low Side

TXV

Compressor

Direction of

Refrigerant

Flow

Condenser

Evaporator

!WARNINGS

DO NOT APPLY MORE THAN 800 PSITO ANY PORT ONTHE MANIFOLD.

FOLLOW ALL EQUIPMENT MANUFACTURER'S TESTING PROCEDURES

ABOVETHOSE IN THIS MANUAL IN REGARDS TO PROPERLY

SERVICING THEIR EQUIPMENT.

What is Superheat and Subcooling?

Why Do I Need to Measure It?

Superheat is the difference between the

actual temperature of the refrigerant (gas) as

it leaves the evaporator and the boiling point

of the refrigerant. After boiling, the refrigerant

continues to heat up. The number of degrees it

“heats up” after boiling is called the superheat.

Under worst case conditions (low load for xed

orice systems), the refrigerant in the evaporator

boils o near the end of the evaporator coil. To

make sure liquid doesn’t enter the compressor

under the worst case condition (low load),

the refrigerator or A/C manufacturers publish

charts indicating what the superheat should be

at a given indoor wet bulb measurement and

outdoor air temperature.

Measuring superheat is your best indication

on a fixed orifice system of the proper

refrigerant charge and operating conditions.

If everything else is working properly and the

actual superheat is too high, add refrigerant. If

it’s too low, evacuate refrigerant.

Subcooling is the dierence between the

boiling point of the refrigerant in the condenser

and the actual temperature of the refrigerant

as it leaves the condenser. The degrees that the

refrigerant“cools down”below the boiling point

is the subcooling. Under worst case scenario

(low load for TXV) the subcooling will continue

to rise. If the subcooling rises too high, liquid

may be backed into the compressor causing

damage and catastrophic failure. See www.

eldpiece.com for more technical articles.

Location of Subcooling Test

Location of Superheat Test

Speciﬁcations

Accuracy: Stated accuracy @ 73°F±9°F (23°C±5°C), <75%RH

Temperature coecient: 0.1 x (specied accuracy) per °C (0°C to

18°C, 28°C to 50°C), per 0.6°F (32°F to 64°F, 82°F to 122°F)

Operating environment: 32°F to 122°F (0°C to 50°C) at <75%

relative humidity

Storage temperature: -4°F to 140°F (-20°C to 60°C), 0 to 80% RH

(with battery removed)

Display size: 5 inches (diagonal)

Backlight: Blue (On for 1 minute unless turned o manually)

Battery: 6 x AA (Battery life below based on alkaline type)

Battery life (SMAN2): Approx. 500 hours (without backlight)

Battery life (SMAN3): Approx. 135 hours (without backlight)

Low battery indication: is displayed when the battery

voltage drops below the operating level

Auto Shut o: 30 minutes of inactivity when APO is activated

Over range: "OL" or "-OL" is displayed

Weight: 3.05 lbs (1.38 kg)

Pressure

Connector Type: Standard 1/4 NPT male are tting

Range: 29”HgV to 500Psig (English), 74 cmHgV to 0 to 4000KPa

(Metric)

Resolution: 0.1 psi/inHg; 1 kPa/cmHg

Accuracy: 29”HgV to 0”HgV: ±0.2”HgV

74 cmHgV to 0 cmHgV: ±0.4 cmHgV

0 to 200 Psig: ±1 Psi,0 to 1378 KPa: ±7 KPa

200 to 500 Psig: ±0.3%+1 Psi, 1378 to 3447KPa: ±0.3%+7 Kpa

Maximum Overload pressure: 800 psig

Units: Psig, kPa, inHg, and cmHg

Microns for Vacuum (SMAN3 only)

Connector Type: Standard 1/4 NPT male are tting

Range: 50 to 9999 microns of mercury

Resolution: 1 micron (50 to 2000 microns), 250 microns (2001 to

5000 microns), 500 microns (5001 to 8000 microns), 1000 microns

(8001 to 9999 microns)

Accuracy: ±10% or ±10 microns, whichever is greater (50 to 1000

microns)

Maximum Overload pressure: 500 psig

Units: Microns of mercury

Temperature

Sensor type: K-Type thermocouple

Range: -76°F to 999.9°F (-60°C to 537.0°C)

Resolution: 0.1°F/°C

Accuracy: ±(1.0°F) -76°F to 199.9°F; ±(0.5°C) -60°C to 93°C

±(2.0°F) 200°F to 999.9°F; ±(1.0°C) 93°C to 537.0°C

Note: All accuracies are after a eld calibration.

Refrigerants

The P-T charts of the following refrigerants come pre-programmed

into your SMAN. In numerical order:

R11, R113, R114, R12, R123, R124, R125, R13, R134A, R22, R23,

R401A(MP39), R401B, R402A, R402B, R404A, R406A, R407A, R407C,

R408A, R409A, R410A, R414B (Hotshot), R416A, R417A, R420A,

R421A, R421B,R422A, R422B(NU22B), R422C(Oneshot), R422D, R424A,

R434A(RS-45), R438A(MO99), R500, R502, R503, R507A

Maintenance

Clean the exterior with a dry cloth. Do not

use liquid.

Battery Replacement

The battery must be replaced when the

battery life indicator is empty. Turn your

SMAN o and replace with 6 AA batteries.

Cleaning the Sensors (SMAN3)

Over time, the vacuum sensor of the SMAN3

may become contaminated with dirt, oil, and

other contaminents introduced from pulling

vacuums.

1 Never use an object such as a cotton swab to clean the sensor,

you may cause damage to the sensor.

2 Open all knobs/valves, and cap all the ports except for the center

port.

3 Drop enough Isopropyl (rubbing) alcohol into the uncapped

port using an eye dropper or funnel so that it can ush out

contaminents.

4 Cap central port and gently shake your SMAN upside down to

clean sensor.

5 Turn right side up. Open a port to pour out the rubbing alcohol

and open all ports to allow sensors to dry out; usually an hour or

so.

Calibration

Temperature

To calibrate your SMAN temperature

thermocouples, adjust the pot on the front of

the meter labeledT1 Cal orT2 Cal.The best way

to calibrate is to match to a known temperature.

Ice water is very close to 32°F and is readily

available. Accuracies of one degree or better

are easily obtained.

1 Stabilize a large cup of ice water by stirring. Pure, distilled water

will be the most accurate.

2 Press the circular button until your SMAN enters Direct

Temperature (T1 T2) mode.

3 Immerse the temp probe in ice water fromT1 and adjust the

T1 Cal pot with a athead screwdriver and let it stabilize, keep

stirring.

4 Repeat Step 3 for temp probe in T2.

Pressure

To calibrate your SMAN pressure sensors to

atmospheric pressure, ensure that your SMAN

is disconnected from any pressure source and

at equilibrium with the ambient pressure.

1 SMAN must be in Superheat/Subcooling, Saturation, orT1 T2

Direct mode.

2 Press the CAL Atmospheric Pressure button and your SMAN will

set the zero point of pressure to the ambient pressure.

Advanced Pressure Calibration

Your SMAN has the ability to perform a linear

adjustment of the pressure sensors based on

refrigerant type, temperature, and pressure.

1 Press circular button until your SMAN enters T1 T2 Direct mode.

2 Plug in a K-type thermocouple intoT1. (A bead type

thermocouple is recommended.)

3 Connect the SMAN to a refrigerant cylinder of known refrigerant

using an EPA approved service hose. Be sure to open both HIGH

and LOW side valves on your manifold and cap the unused

ports. (If caps are not available you can connect both ends of a

refrigerant hose to the two unused caps. Note you will lose some

refrigerant into the hose using this method.)

4 Press the REFRIGERANT button to match the refrigerant of the

cylinder you are using.

5 Attach bead-type thermocouple to the side of the cylinder using

tape. It is recommended to attach in the middle of the cylinder.

Important: Let the temperature of the thermocouple stabilize to

the refrigerant temperature for 1 to 2 minutes or until stable.

6 Open the refrigerant cylinder. The pressure inside cylinder should

now be displayed on both HIGH and LOW side pressure sensors.

7 Press the CAL Test Pressure button.

Your SMAN refers to the built-in P-T charts

to compare the temperature of the refrigerant

to the vapor saturation temperature. If the

pressures on your SMAN are within 3psi of the

pressure corresponding to the vapor saturation

temperature, your SMAN will linearly adjust the

pressure readings to match the P-T chart.

Limited Warranty

This meter is warranted against defects in

material or workmanship for one year from

date of purchase. Fieldpiece will replace or

repair the defective unit, at its option, subject

to verication of the defect.

This warranty does not apply to defects

resulting from abuse, neglect, accident,

unauthorized repair, alteration, or unreasonable

use of the instrument.

Any implied warranties arising from the sale of

a Fieldpiece product, including but not limited

to implied warranties of merchantability and

tness for a particular purpose, are limited to

the above. Fieldpiece shall not be liable for loss

of use of the instrument or other incidental or

consequential damages, expenses, or economic

loss, or for any claim of such damage, expenses,

or economic loss.

State laws vary. The above limitations or

exclusions may not apply to you.

Safety Information Obtaining Service

Call Fieldpiece Instruments for one-price-

x-all warranty service pricing. Send check or

money order for the amount quoted. Send

your digital manifold, freight prepaid, to

Fieldpiece Instruments. Send proof of date and

location of purchase for in-warranty service.

The meter will be repaired or replaced, at the

option of Fieldpiece, and returned via least cost

transportation.

www.fieldpiece.com

High Side

Low Side

TXV

Compressor

Direction of

Refrigerant

Flow

Condenser

Evaporator

!WARNINGS

DO NOT APPLY MORE THAN 800 PSITO ANY PORT ONTHE MANIFOLD.

FOLLOW ALL EQUIPMENT MANUFACTURER'S TESTING PROCEDURES

ABOVETHOSE IN THIS MANUAL IN REGARDS TO PROPERLY

SERVICING THEIR EQUIPMENT.

What is Superheat and Subcooling?

Why Do I Need to Measure It?

Superheat is the difference between the

actual temperature of the refrigerant (gas) as

it leaves the evaporator and the boiling point

of the refrigerant. After boiling, the refrigerant

continues to heat up. The number of degrees it

“heats up” after boiling is called the superheat.

Under worst case conditions (low load for xed

orice systems), the refrigerant in the evaporator

boils o near the end of the evaporator coil. To

make sure liquid doesn’t enter the compressor

under the worst case condition (low load),

the refrigerator or A/C manufacturers publish

charts indicating what the superheat should be

at a given indoor wet bulb measurement and

outdoor air temperature.

Measuring superheat is your best indication

on a fixed orifice system of the proper

refrigerant charge and operating conditions.

If everything else is working properly and the

actual superheat is too high, add refrigerant. If

it’s too low, evacuate refrigerant.

Subcooling is the dierence between the

boiling point of the refrigerant in the condenser

and the actual temperature of the refrigerant

as it leaves the condenser. The degrees that the

refrigerant“cools down”below the boiling point

is the subcooling. Under worst case scenario

(low load for TXV) the subcooling will continue

to rise. If the subcooling rises too high, liquid

may be backed into the compressor causing

damage and catastrophic failure. See www.

eldpiece.com for more technical articles.

Location of Subcooling Test

Location of Superheat Test

Speciﬁcations

Accuracy: Stated accuracy @ 73°F±9°F (23°C±5°C), <75%RH

Temperature coecient: 0.1 x (specied accuracy) per °C (0°C to

18°C, 28°C to 50°C), per 0.6°F (32°F to 64°F, 82°F to 122°F)

Operating environment: 32°F to 122°F (0°C to 50°C) at <75%

relative humidity

Storage temperature: -4°F to 140°F (-20°C to 60°C), 0 to 80% RH

(with battery removed)

Display size: 5 inches (diagonal)

Backlight: Blue (On for 1 minute unless turned o manually)

Battery: 6 x AA (Battery life below based on alkaline type)

Battery life (SMAN2): Approx. 500 hours (without backlight)

Battery life (SMAN3): Approx. 135 hours (without backlight)

Low battery indication: is displayed when the battery

voltage drops below the operating level

Auto Shut o: 30 minutes of inactivity when APO is activated

Over range: "OL" or "-OL" is displayed

Weight: 3.05 lbs (1.38 kg)

Pressure

Connector Type: Standard 1/4 NPT male are tting

Range: 29”HgV to 500Psig (English), 74 cmHgV to 0 to 4000KPa

(Metric)

Resolution: 0.1 psi/inHg; 1 kPa/cmHg

Accuracy: 29”HgV to 0”HgV: ±0.2”HgV

74 cmHgV to 0 cmHgV: ±0.4 cmHgV

0 to 200 Psig: ±1 Psi,0 to 1378 KPa: ±7 KPa

200 to 500 Psig: ±0.3%+1 Psi, 1378 to 3447KPa: ±0.3%+7 Kpa

Maximum Overload pressure: 800 psig

Units: Psig, kPa, inHg, and cmHg

Microns for Vacuum (SMAN3 only)

Connector Type: Standard 1/4 NPT male are tting

Range: 50 to 9999 microns of mercury

Resolution: 1 micron (50 to 2000 microns), 250 microns (2001 to

5000 microns), 500 microns (5001 to 8000 microns), 1000 microns

(8001 to 9999 microns)

Accuracy: ±10% or ±10 microns, whichever is greater (50 to 1000

microns)

Maximum Overload pressure: 500 psig

Units: Microns of mercury

Temperature

Sensor type: K-Type thermocouple

Range: -76°F to 999.9°F (-60°C to 537.0°C)

Resolution: 0.1°F/°C

Accuracy: ±(1.0°F) -76°F to 199.9°F; ±(0.5°C) -60°C to 93°C

±(2.0°F) 200°F to 999.9°F; ±(1.0°C) 93°C to 537.0°C

Note: All accuracies are after a eld calibration.

Refrigerants

The P-T charts of the following refrigerants come pre-programmed

into your SMAN. In numerical order:

R11, R113, R114, R12, R123, R124, R125, R13, R134A, R22, R23,

R401A(MP39), R401B, R402A, R402B, R404A, R406A, R407A, R407C,

R408A, R409A, R410A, R414B (Hotshot), R416A, R417A, R420A,

R421A, R421B,R422A, R422B(NU22B), R422C(Oneshot), R422D, R424A,

R434A(RS-45), R438A(MO99), R500, R502, R503, R507A

Maintenance

Clean the exterior with a dry cloth. Do not

use liquid.

Battery Replacement

The battery must be replaced when the

battery life indicator is empty. Turn your

SMAN o and replace with 6 AA batteries.

Cleaning the Sensors (SMAN3)

Over time, the vacuum sensor of the SMAN3

may become contaminated with dirt, oil, and

other contaminents introduced from pulling

vacuums.

1 Never use an object such as a cotton swab to clean the sensor,

you may cause damage to the sensor.

2 Open all knobs/valves, and cap all the ports except for the center

port.

3 Drop enough Isopropyl (rubbing) alcohol into the uncapped

port using an eye dropper or funnel so that it can ush out

contaminents.

4 Cap central port and gently shake your SMAN upside down to

clean sensor.

5 Turn right side up. Open a port to pour out the rubbing alcohol

and open all ports to allow sensors to dry out; usually an hour or

so.

Calibration

Temperature

To calibrate your SMAN temperature

thermocouples, adjust the pot on the front of

the meter labeledT1 Cal orT2 Cal.The best way

to calibrate is to match to a known temperature.

Ice water is very close to 32°F and is readily

available. Accuracies of one degree or better

are easily obtained.

1 Stabilize a large cup of ice water by stirring. Pure, distilled water

will be the most accurate.

2 Press the circular button until your SMAN enters Direct

Temperature (T1 T2) mode.

3 Immerse the temp probe in ice water fromT1 and adjust the

T1 Cal pot with a athead screwdriver and let it stabilize, keep

stirring.

4 Repeat Step 3 for temp probe in T2.

Pressure

To calibrate your SMAN pressure sensors to

atmospheric pressure, ensure that your SMAN

is disconnected from any pressure source and

at equilibrium with the ambient pressure.

1 SMAN must be in Superheat/Subcooling, Saturation, orT1 T2

Direct mode.

2 Press the CAL Atmospheric Pressure button and your SMAN will

set the zero point of pressure to the ambient pressure.

Advanced Pressure Calibration

Your SMAN has the ability to perform a linear

adjustment of the pressure sensors based on

refrigerant type, temperature, and pressure.

1 Press circular button until your SMAN enters T1 T2 Direct mode.

2 Plug in a K-type thermocouple intoT1. (A bead type

thermocouple is recommended.)

3 Connect the SMAN to a refrigerant cylinder of known refrigerant

using an EPA approved service hose. Be sure to open both HIGH

and LOW side valves on your manifold and cap the unused

ports. (If caps are not available you can connect both ends of a

refrigerant hose to the two unused caps. Note you will lose some

refrigerant into the hose using this method.)

4 Press the REFRIGERANT button to match the refrigerant of the

cylinder you are using.

5 Attach bead-type thermocouple to the side of the cylinder using

tape. It is recommended to attach in the middle of the cylinder.

Important: Let the temperature of the thermocouple stabilize to

the refrigerant temperature for 1 to 2 minutes or until stable.

6 Open the refrigerant cylinder. The pressure inside cylinder should

now be displayed on both HIGH and LOW side pressure sensors.

7 Press the CAL Test Pressure button.

Your SMAN refers to the built-in P-T charts

to compare the temperature of the refrigerant

to the vapor saturation temperature. If the

pressures on your SMAN are within 3psi of the

pressure corresponding to the vapor saturation

temperature, your SMAN will linearly adjust the

pressure readings to match the P-T chart.

Limited Warranty

This meter is warranted against defects in

material or workmanship for one year from

date of purchase. Fieldpiece will replace or

repair the defective unit, at its option, subject

to verication of the defect.

This warranty does not apply to defects

resulting from abuse, neglect, accident,

unauthorized repair, alteration, or unreasonable

use of the instrument.

Any implied warranties arising from the sale of

a Fieldpiece product, including but not limited

to implied warranties of merchantability and

tness for a particular purpose, are limited to

the above. Fieldpiece shall not be liable for loss

of use of the instrument or other incidental or

consequential damages, expenses, or economic

loss, or for any claim of such damage, expenses,

or economic loss.

State laws vary. The above limitations or

exclusions may not apply to you.

Safety Information Obtaining Service

Call Fieldpiece Instruments for one-price-

x-all warranty service pricing. Send check or

money order for the amount quoted. Send

your digital manifold, freight prepaid, to

Fieldpiece Instruments. Send proof of date and

location of purchase for in-warranty service.

The meter will be repaired or replaced, at the

option of Fieldpiece, and returned via least cost

transportation.

www.fieldpiece.com

High Side

Low Side

TXV

Compressor

Direction of

Refrigerant

Flow

Condenser

Evaporator

!WARNINGS

DO NOT APPLY MORE THAN 800 PSITO ANY PORT ONTHE MANIFOLD.

FOLLOW ALL EQUIPMENT MANUFACTURER'S TESTING PROCEDURES

ABOVETHOSE IN THIS MANUAL IN REGARDS TO PROPERLY

SERVICING THEIR EQUIPMENT.

What is Superheat and Subcooling?

Why Do I Need to Measure It?

Superheat is the difference between the

actual temperature of the refrigerant (gas) as

it leaves the evaporator and the boiling point

of the refrigerant. After boiling, the refrigerant

continues to heat up. The number of degrees it

“heats up” after boiling is called the superheat.

Under worst case conditions (low load for xed

orice systems), the refrigerant in the evaporator

boils o near the end of the evaporator coil. To

make sure liquid doesn’t enter the compressor

under the worst case condition (low load),

the refrigerator or A/C manufacturers publish

charts indicating what the superheat should be

at a given indoor wet bulb measurement and

outdoor air temperature.

Measuring superheat is your best indication

on a fixed orifice system of the proper

refrigerant charge and operating conditions.

If everything else is working properly and the

actual superheat is too high, add refrigerant. If

it’s too low, evacuate refrigerant.

Subcooling is the dierence between the

boiling point of the refrigerant in the condenser

and the actual temperature of the refrigerant

as it leaves the condenser. The degrees that the

refrigerant“cools down”below the boiling point

is the subcooling. Under worst case scenario

(low load for TXV) the subcooling will continue

to rise. If the subcooling rises too high, liquid

may be backed into the compressor causing

damage and catastrophic failure. See www.

eldpiece.com for more technical articles.

Location of Subcooling Test

Location of Superheat Test

Speciﬁcations

Accuracy: Stated accuracy @ 73°F±9°F (23°C±5°C), <75%RH

Temperature coecient: 0.1 x (specied accuracy) per °C (0°C to

18°C, 28°C to 50°C), per 0.6°F (32°F to 64°F, 82°F to 122°F)

Operating environment: 32°F to 122°F (0°C to 50°C) at <75%

relative humidity

Storage temperature: -4°F to 140°F (-20°C to 60°C), 0 to 80% RH

(with battery removed)

Display size: 5 inches (diagonal)

Backlight: Blue (On for 1 minute unless turned o manually)

Battery: 6 x AA (Battery life below based on alkaline type)

Battery life (SMAN2): Approx. 500 hours (without backlight)

Battery life (SMAN3): Approx. 135 hours (without backlight)

Low battery indication: is displayed when the battery

voltage drops below the operating level

Auto Shut o: 30 minutes of inactivity when APO is activated

Over range: "OL" or "-OL" is displayed

Weight: 3.05 lbs (1.38 kg)

Pressure

Connector Type: Standard 1/4 NPT male are tting

Range: 29”HgV to 500Psig (English), 74 cmHgV to 0 to 4000KPa

(Metric)

Resolution: 0.1 psi/inHg; 1 kPa/cmHg

Accuracy: 29”HgV to 0”HgV: ±0.2”HgV

74 cmHgV to 0 cmHgV: ±0.4 cmHgV

0 to 200 Psig: ±1 Psi,0 to 1378 KPa: ±7 KPa

200 to 500 Psig: ±0.3%+1 Psi, 1378 to 3447KPa: ±0.3%+7 Kpa

Maximum Overload pressure: 800 psig

Units: Psig, kPa, inHg, and cmHg

Microns for Vacuum (SMAN3 only)

Connector Type: Standard 1/4 NPT male are tting

Range: 50 to 9999 microns of mercury

Resolution: 1 micron (50 to 2000 microns), 250 microns (2001 to

5000 microns), 500 microns (5001 to 8000 microns), 1000 microns

(8001 to 9999 microns)

Accuracy: ±10% or ±10 microns, whichever is greater (50 to 1000

microns)

Maximum Overload pressure: 500 psig

Units: Microns of mercury

Temperature

Sensor type: K-Type thermocouple

Range: -76°F to 999.9°F (-60°C to 537.0°C)

Resolution: 0.1°F/°C

Accuracy: ±(1.0°F) -76°F to 199.9°F; ±(0.5°C) -60°C to 93°C

±(2.0°F) 200°F to 999.9°F; ±(1.0°C) 93°C to 537.0°C

Note: All accuracies are after a eld calibration.

Refrigerants

The P-T charts of the following refrigerants come pre-programmed

into your SMAN. In numerical order:

R11, R113, R114, R12, R123, R124, R125, R13, R134A, R22, R23,

R401A(MP39), R401B, R402A, R402B, R404A, R406A, R407A, R407C,

R408A, R409A, R410A, R414B (Hotshot), R416A, R417A, R420A,

R421A, R421B,R422A, R422B(NU22B), R422C(Oneshot), R422D, R424A,

R434A(RS-45), R438A(MO99), R500, R502, R503, R507A

Maintenance

Clean the exterior with a dry cloth. Do not

use liquid.

Battery Replacement

The battery must be replaced when the

battery life indicator is empty. Turn your

SMAN o and replace with 6 AA batteries.

Cleaning the Sensors (SMAN3)

Over time, the vacuum sensor of the SMAN3

may become contaminated with dirt, oil, and

other contaminents introduced from pulling

vacuums.

1 Never use an object such as a cotton swab to clean the sensor,

you may cause damage to the sensor.

2 Open all knobs/valves, and cap all the ports except for the center

port.

3 Drop enough Isopropyl (rubbing) alcohol into the uncapped

port using an eye dropper or funnel so that it can ush out

contaminents.

4 Cap central port and gently shake your SMAN upside down to

clean sensor.

5 Turn right side up. Open a port to pour out the rubbing alcohol

and open all ports to allow sensors to dry out; usually an hour or

so.

Calibration

Temperature

To calibrate your SMAN temperature

thermocouples, adjust the pot on the front of

the meter labeledT1 Cal orT2 Cal.The best way

to calibrate is to match to a known temperature.

Ice water is very close to 32°F and is readily

available. Accuracies of one degree or better

are easily obtained.

1 Stabilize a large cup of ice water by stirring. Pure, distilled water

will be the most accurate.

2 Press the circular button until your SMAN enters Direct

Temperature (T1 T2) mode.

3 Immerse the temp probe in ice water fromT1 and adjust the

T1 Cal pot with a athead screwdriver and let it stabilize, keep

stirring.

4 Repeat Step 3 for temp probe in T2.

Pressure

To calibrate your SMAN pressure sensors to

atmospheric pressure, ensure that your SMAN

is disconnected from any pressure source and

at equilibrium with the ambient pressure.

1 SMAN must be in Superheat/Subcooling, Saturation, orT1 T2

Direct mode.

2 Press the CAL Atmospheric Pressure button and your SMAN will

set the zero point of pressure to the ambient pressure.

Advanced Pressure Calibration

Your SMAN has the ability to perform a linear

adjustment of the pressure sensors based on

refrigerant type, temperature, and pressure.

1 Press circular button until your SMAN enters T1 T2 Direct mode.

2 Plug in a K-type thermocouple into T1. (A bead type

thermocouple is recommended.)

3 Connect the SMAN to a refrigerant cylinder of known refrigerant

using an EPA approved service hose. Be sure to open both HIGH

and LOW side valves on your manifold and cap the unused

ports. (If caps are not available you can connect both ends of a

refrigerant hose to the two unused caps. Note you will lose some

refrigerant into the hose using this method.)

4 Press the REFRIGERANT button to match the refrigerant of the

cylinder you are using.

5 Attach bead-type thermocouple to the side of the cylinder using

tape. It is recommended to attach in the middle of the cylinder.

Important: Let the temperature of the thermocouple stabilize to

the refrigerant temperature for 1 to 2 minutes or until stable.

6 Open the refrigerant cylinder. The pressure inside cylinder should

now be displayed on both HIGH and LOW side pressure sensors.

7 Press the CAL Test Pressure button.

Your SMAN refers to the built-in P-T charts

to compare the temperature of the refrigerant

to the vapor saturation temperature. If the

pressures on your SMAN are within 3psi of the

pressure corresponding to the vapor saturation

temperature, your SMAN will linearly adjust the

pressure readings to match the P-T chart.

Limited Warranty

This meter is warranted against defects in

material or workmanship for one year from

date of purchase. Fieldpiece will replace or

repair the defective unit, at its option, subject

to verication of the defect.

This warranty does not apply to defects

resulting from abuse, neglect, accident,

unauthorized repair, alteration, or unreasonable

use of the instrument.

Any implied warranties arising from the sale of

a Fieldpiece product, including but not limited

to implied warranties of merchantability and

tness for a particular purpose, are limited to

the above. Fieldpiece shall not be liable for loss

of use of the instrument or other incidental or

consequential damages, expenses, or economic

loss, or for any claim of such damage, expenses,

or economic loss.

State laws vary. The above limitations or

exclusions may not apply to you.

Safety Information Obtaining Service

Call Fieldpiece Instruments for one-price-

x-all warranty service pricing. Send check or

money order for the amount quoted. Send

your digital manifold, freight prepaid, to

Fieldpiece Instruments. Send proof of date and

location of purchase for in-warranty service.

The meter will be repaired or replaced, at the

option of Fieldpiece, and returned via least cost

transportation.

www.fieldpiece.com

High Side

Low Side

TXV

Compressor

Direction of

Refrigerant

Flow

Condenser

Evaporator

!WARNINGS

DO NOT APPLY MORE THAN 800 PSITO ANY PORT ONTHE MANIFOLD.

FOLLOW ALL EQUIPMENT MANUFACTURER'S TESTING PROCEDURES

ABOVETHOSE IN THIS MANUAL IN REGARDS TO PROPERLY

SERVICING THEIR EQUIPMENT.

What is Superheat and Subcooling?

Why Do I Need to Measure It?

Superheat is the difference between the

actual temperature of the refrigerant (gas) as

it leaves the evaporator and the boiling point

of the refrigerant. After boiling, the refrigerant

continues to heat up. The number of degrees it

“heats up” after boiling is called the superheat.

Under worst case conditions (low load for xed

orice systems), the refrigerant in the evaporator

boils o near the end of the evaporator coil. To

make sure liquid doesn’t enter the compressor

under the worst case condition (low load),

the refrigerator or A/C manufacturers publish

charts indicating what the superheat should be

at a given indoor wet bulb measurement and

outdoor air temperature.

Measuring superheat is your best indication

on a fixed orifice system of the proper

refrigerant charge and operating conditions.

If everything else is working properly and the

actual superheat is too high, add refrigerant. If

it’s too low, evacuate refrigerant.

Subcooling is the dierence between the

boiling point of the refrigerant in the condenser

and the actual temperature of the refrigerant

as it leaves the condenser. The degrees that the

refrigerant“cools down”below the boiling point

is the subcooling. Under worst case scenario

(low load for TXV) the subcooling will continue

to rise. If the subcooling rises too high, liquid

may be backed into the compressor causing

damage and catastrophic failure. See www.

eldpiece.com for more technical articles.

Location of Subcooling Test

Location of Superheat Test

Speciﬁcations

Accuracy: Stated accuracy @ 73°F±9°F (23°C±5°C), <75%RH

Temperature coecient: 0.1 x (specied accuracy) per °C (0°C to

18°C, 28°C to 50°C), per 0.6°F (32°F to 64°F, 82°F to 122°F)

Operating environment: 32°F to 122°F (0°C to 50°C) at <75%

relative humidity

Storage temperature: -4°F to 140°F (-20°C to 60°C), 0 to 80% RH

(with battery removed)

Display size: 5 inches (diagonal)

Backlight: Blue (On for 1 minute unless turned o manually)

Battery: 6 x AA (Battery life below based on alkaline type)

Battery life (SMAN2): Approx. 500 hours (without backlight)

Battery life (SMAN3): Approx. 135 hours (without backlight)

Low battery indication: is displayed when the battery

voltage drops below the operating level

Auto Shut o: 30 minutes of inactivity when APO is activated

Over range: "OL" or "-OL" is displayed

Weight: 3.05 lbs (1.38 kg)

Pressure

Connector Type: Standard 1/4 NPT male are tting

Range: 29”HgV to 500Psig (English), 74 cmHgV to 0 to 4000KPa

(Metric)

Resolution: 0.1 psi/inHg; 1 kPa/cmHg

Accuracy: 29”HgV to 0”HgV: ±0.2”HgV

74 cmHgV to 0 cmHgV: ±0.4 cmHgV

0 to 200 Psig: ±1 Psi,0 to 1378 KPa: ±7 KPa

200 to 500 Psig: ±0.3%+1 Psi, 1378 to 3447KPa: ±0.3%+7 Kpa

Maximum Overload pressure: 800 psig

Units: Psig, kPa, inHg, and cmHg

Microns for Vacuum (SMAN3 only)

Connector Type: Standard 1/4 NPT male are tting

Range: 50 to 9999 microns of mercury

Resolution: 1 micron (50 to 2000 microns), 250 microns (2001 to

5000 microns), 500 microns (5001 to 8000 microns), 1000 microns

(8001 to 9999 microns)

Accuracy: ±10% or ±10 microns, whichever is greater (50 to 1000

microns)

Maximum Overload pressure: 500 psig

Units: Microns of mercury

Temperature

Sensor type: K-Type thermocouple

Range: -76°F to 999.9°F (-60°C to 537.0°C)

Resolution: 0.1°F/°C

Accuracy: ±(1.0°F) -76°F to 199.9°F; ±(0.5°C) -60°C to 93°C

±(2.0°F) 200°F to 999.9°F; ±(1.0°C) 93°C to 537.0°C

Note: All accuracies are after a eld calibration.

Refrigerants

The P-T charts of the following refrigerants come pre-programmed

into your SMAN. In numerical order:

R11, R113, R114, R12, R123, R124, R125, R13, R134A, R22, R23,

R401A(MP39), R401B, R402A, R402B, R404A, R406A, R407A, R407C,

R408A, R409A, R410A, R414B (Hotshot), R416A, R417A, R420A,

R421A, R421B,R422A, R422B(NU22B), R422C(Oneshot), R422D, R424A,

R434A(RS-45), R438A(MO99), R500, R502, R503, R507A

Maintenance

Clean the exterior with a dry cloth. Do not

use liquid.

Battery Replacement

The battery must be replaced when the

battery life indicator is empty. Turn your

SMAN o and replace with 6 AA batteries.

Cleaning the Sensors (SMAN3)

Over time, the vacuum sensor of the SMAN3

may become contaminated with dirt, oil, and

other contaminents introduced from pulling

vacuums.

1 Never use an object such as a cotton swab to clean the sensor,

you may cause damage to the sensor.

2 Open all knobs/valves, and cap all the ports except for the center

port.

3 Drop enough Isopropyl (rubbing) alcohol into the uncapped

port using an eye dropper or funnel so that it can ush out

contaminents.

4 Cap central port and gently shake your SMAN upside down to

clean sensor.

5 Turn right side up. Open a port to pour out the rubbing alcohol

and open all ports to allow sensors to dry out; usually an hour or

so.

Calibration

Temperature

To calibrate your SMAN temperature

thermocouples, adjust the pot on the front of

the meter labeledT1 Cal orT2 Cal.The best way

to calibrate is to match to a known temperature.

Ice water is very close to 32°F and is readily

available. Accuracies of one degree or better

are easily obtained.

1 Stabilize a large cup of ice water by stirring. Pure, distilled water

will be the most accurate.

2 Press the circular button until your SMAN enters Direct

Temperature (T1 T2) mode.

3 Immerse the temp probe in ice water fromT1 and adjust the

T1 Cal pot with a athead screwdriver and let it stabilize, keep

stirring.

4 Repeat Step 3 for temp probe in T2.

Pressure

To calibrate your SMAN pressure sensors to

atmospheric pressure, ensure that your SMAN

is disconnected from any pressure source and

at equilibrium with the ambient pressure.

1 SMAN must be in Superheat/Subcooling, Saturation, orT1 T2

Direct mode.

2 Press the CAL Atmospheric Pressure button and your SMAN will

set the zero point of pressure to the ambient pressure.

Advanced Pressure Calibration

Your SMAN has the ability to perform a linear

adjustment of the pressure sensors based on

refrigerant type, temperature, and pressure.

1 Press circular button until your SMAN enters T1 T2 Direct mode.

2 Plug in a K-type thermocouple into T1. (A bead type

thermocouple is recommended.)

3 Connect the SMAN to a refrigerant cylinder of known refrigerant

using an EPA approved service hose. Be sure to open both HIGH

and LOW side valves on your manifold and cap the unused

ports. (If caps are not available you can connect both ends of a

refrigerant hose to the two unused caps. Note you will lose some

refrigerant into the hose using this method.)

4 Press the REFRIGERANT button to match the refrigerant of the

cylinder you are using.

5 Attach bead-type thermocouple to the side of the cylinder using

tape. It is recommended to attach in the middle of the cylinder.

Important: Let the temperature of the thermocouple stabilize to

the refrigerant temperature for 1 to 2 minutes or until stable.

6 Open the refrigerant cylinder. The pressure inside cylinder should

now be displayed on both HIGH and LOW side pressure sensors.

7 Press the CAL Test Pressure button.

Your SMAN refers to the built-in P-T charts

to compare the temperature of the refrigerant

to the vapor saturation temperature. If the

pressures on your SMAN are within 3psi of the

pressure corresponding to the vapor saturation

temperature, your SMAN will linearly adjust the

pressure readings to match the P-T chart.

Limited Warranty

This meter is warranted against defects in

material or workmanship for one year from

date of purchase. Fieldpiece will replace or

repair the defective unit, at its option, subject

to verication of the defect.

This warranty does not apply to defects

resulting from abuse, neglect, accident,

unauthorized repair, alteration, or unreasonable

use of the instrument.

Any implied warranties arising from the sale of

a Fieldpiece product, including but not limited

to implied warranties of merchantability and

tness for a particular purpose, are limited to

the above. Fieldpiece shall not be liable for loss

of use of the instrument or other incidental or

consequential damages, expenses, or economic

loss, or for any claim of such damage, expenses,

or economic loss.

State laws vary. The above limitations or

exclusions may not apply to you.

Safety Information Obtaining Service

Call Fieldpiece Instruments for one-price-

x-all warranty service pricing. Send check or

money order for the amount quoted. Send

your digital manifold, freight prepaid, to

Fieldpiece Instruments. Send proof of date and

location of purchase for in-warranty service.

The meter will be repaired or replaced, at the

option of Fieldpiece, and returned via least cost

transportation.

www.fieldpiece.com

High Side

Low Side

TXV

Compressor

Direction of

Refrigerant

Flow

Condenser

Evaporator

!WARNINGS

DO NOT APPLY MORE THAN 800 PSITO ANY PORT ONTHE MANIFOLD.

FOLLOW ALL EQUIPMENT MANUFACTURER'S TESTING PROCEDURES

ABOVETHOSE IN THIS MANUAL IN REGARDS TO PROPERLY

SERVICING THEIR EQUIPMENT.

What is Superheat and Subcooling?

Why Do I Need to Measure It?

Superheat is the difference between the

actual temperature of the refrigerant (gas) as

it leaves the evaporator and the boiling point

of the refrigerant. After boiling, the refrigerant

continues to heat up. The number of degrees it

“heats up” after boiling is called the superheat.

Under worst case conditions (low load for xed

orice systems), the refrigerant in the evaporator

boils o near the end of the evaporator coil. To

make sure liquid doesn’t enter the compressor

under the worst case condition (low load),

the refrigerator or A/C manufacturers publish

charts indicating what the superheat should be

at a given indoor wet bulb measurement and

outdoor air temperature.

Measuring superheat is your best indication

on a fixed orifice system of the proper

refrigerant charge and operating conditions.

If everything else is working properly and the

actual superheat is too high, add refrigerant. If

it’s too low, evacuate refrigerant.

Subcooling is the dierence between the

boiling point of the refrigerant in the condenser

and the actual temperature of the refrigerant

as it leaves the condenser. The degrees that the

refrigerant“cools down”below the boiling point

is the subcooling. Under worst case scenario

(low load for TXV) the subcooling will continue

to rise. If the subcooling rises too high, liquid

may be backed into the compressor causing

damage and catastrophic failure. See www.

eldpiece.com for more technical articles.

Location of Subcooling Test

Location of Superheat Test

Speciﬁcations

Accuracy: Stated accuracy @ 73°F±9°F (23°C±5°C), <75%RH

Temperature coecient: 0.1 x (specied accuracy) per °C (0°C to

18°C, 28°C to 50°C), per 0.6°F (32°F to 64°F, 82°F to 122°F)

Operating environment: 32°F to 122°F (0°C to 50°C) at <75%

relative humidity

Storage temperature: -4°F to 140°F (-20°C to 60°C), 0 to 80% RH

(with battery removed)

Display size: 5 inches (diagonal)

Backlight: Blue (On for 1 minute unless turned o manually)

Battery: 6 x AA (Battery life below based on alkaline type)

Battery life (SMAN2): Approx. 500 hours (without backlight)

Battery life (SMAN3): Approx. 135 hours (without backlight)

Low battery indication: is displayed when the battery

voltage drops below the operating level

Auto Shut o: 30 minutes of inactivity when APO is activated

Over range: "OL" or "-OL" is displayed

Weight: 3.05 lbs (1.38 kg)

Pressure

Connector Type: Standard 1/4 NPT male are tting

Range: 29”HgV to 500Psig (English), 74 cmHgV to 0 to 4000KPa

(Metric)

Resolution: 0.1 psi/inHg; 1 kPa/cmHg

Accuracy: 29”HgV to 0”HgV: ±0.2”HgV

74 cmHgV to 0 cmHgV: ±0.4 cmHgV

0 to 200 Psig: ±1 Psi,0 to 1378 KPa: ±7 KPa

200 to 500 Psig: ±0.3%+1 Psi, 1378 to 3447KPa: ±0.3%+7 Kpa

Maximum Overload pressure: 800 psig

Units: Psig, kPa, inHg, and cmHg

Microns for Vacuum (SMAN3 only)

Connector Type: Standard 1/4 NPT male are tting

Range: 50 to 9999 microns of mercury

Resolution: 1 micron (50 to 2000 microns), 250 microns (2001 to

5000 microns), 500 microns (5001 to 8000 microns), 1000 microns

(8001 to 9999 microns)

Accuracy: ±10% or ±10 microns, whichever is greater (50 to 1000

microns)

Maximum Overload pressure: 500 psig

Units: Microns of mercury

Temperature

Sensor type: K-Type thermocouple

Range: -76°F to 999.9°F (-60°C to 537.0°C)

Resolution: 0.1°F/°C

Accuracy: ±(1.0°F) -76°F to 199.9°F; ±(0.5°C) -60°C to 93°C

±(2.0°F) 200°F to 999.9°F; ±(1.0°C) 93°C to 537.0°C

Note: All accuracies are after a eld calibration.

Refrigerants

The P-T charts of the following refrigerants come pre-programmed

into your SMAN. In numerical order:

R11, R113, R114, R12, R123, R124, R125, R13, R134A, R22, R23,

R401A(MP39), R401B, R402A, R402B, R404A, R406A, R407A, R407C,

R408A, R409A, R410A, R414B (Hotshot), R416A, R417A, R420A,

R421A, R421B,R422A, R422B(NU22B), R422C(Oneshot), R422D, R424A,

R434A(RS-45), R438A(MO99), R500, R502, R503, R507A

Maintenance

Clean the exterior with a dry cloth. Do not

use liquid.

Battery Replacement

The battery must be replaced when the

battery life indicator is empty. Turn your

SMAN o and replace with 6 AA batteries.

Cleaning the Sensors (SMAN3)

Over time, the vacuum sensor of the SMAN3

may become contaminated with dirt, oil, and

other contaminents introduced from pulling

vacuums.

1 Never use an object such as a cotton swab to clean the sensor,

you may cause damage to the sensor.

2 Open all knobs/valves, and cap all the ports except for the center

port.

3 Drop enough Isopropyl (rubbing) alcohol into the uncapped

port using an eye dropper or funnel so that it can ush out

contaminents.

4 Cap central port and gently shake your SMAN upside down to

clean sensor.

5 Turn right side up. Open a port to pour out the rubbing alcohol

and open all ports to allow sensors to dry out; usually an hour or

so.

Calibration

Temperature

To calibrate your SMAN temperature

thermocouples, adjust the pot on the front of

the meter labeledT1 Cal orT2 Cal.The best way

to calibrate is to match to a known temperature.

Ice water is very close to 32°F and is readily

available. Accuracies of one degree or better

are easily obtained.

1 Stabilize a large cup of ice water by stirring. Pure, distilled water

will be the most accurate.

2 Press the circular button until your SMAN enters Direct

Temperature (T1 T2) mode.

3 Immerse the temp probe in ice water from T1 and adjust the

T1 Cal pot with a athead screwdriver and let it stabilize, keep

stirring.

4 Repeat Step 3 for temp probe in T2.

Pressure

To calibrate your SMAN pressure sensors to

atmospheric pressure, ensure that your SMAN

is disconnected from any pressure source and

at equilibrium with the ambient pressure.

1 SMAN must be in Superheat/Subcooling, Saturation, orT1 T2

Direct mode.

2 Press the CAL Atmospheric Pressure button and your SMAN will

set the zero point of pressure to the ambient pressure.

Advanced Pressure Calibration

Your SMAN has the ability to perform a linear

adjustment of the pressure sensors based on

refrigerant type, temperature, and pressure.

1 Press circular button until your SMAN enters T1 T2 Direct mode.

2 Plug in a K-type thermocouple into T1. (A bead type

thermocouple is recommended.)

3 Connect the SMAN to a refrigerant cylinder of known refrigerant

using an EPA approved service hose. Be sure to open both HIGH

and LOW side valves on your manifold and cap the unused

ports. (If caps are not available you can connect both ends of a

refrigerant hose to the two unused caps. Note you will lose some

refrigerant into the hose using this method.)

4 Press the REFRIGERANT button to match the refrigerant of the

cylinder you are using.

5 Attach bead-type thermocouple to the side of the cylinder using

tape. It is recommended to attach in the middle of the cylinder.

Important: Let the temperature of the thermocouple stabilize to

the refrigerant temperature for 1 to 2 minutes or until stable.

6 Open the refrigerant cylinder. The pressure inside cylinder should

now be displayed on both HIGH and LOW side pressure sensors.

7 Press the CALTest Pressure button.

Your SMAN refers to the built-in P-T charts

to compare the temperature of the refrigerant

to the vapor saturation temperature. If the

pressures on your SMAN are within 3psi of the

pressure corresponding to the vapor saturation

temperature, your SMAN will linearly adjust the

pressure readings to match the P-T chart.

Limited Warranty

This meter is warranted against defects in

material or workmanship for one year from

date of purchase. Fieldpiece will replace or

repair the defective unit, at its option, subject

to verication of the defect.

This warranty does not apply to defects

resulting from abuse, neglect, accident,

unauthorized repair, alteration, or unreasonable

use of the instrument.

Any implied warranties arising from the sale of

a Fieldpiece product, including but not limited

to implied warranties of merchantability and

tness for a particular purpose, are limited to

the above. Fieldpiece shall not be liable for loss

of use of the instrument or other incidental or

consequential damages, expenses, or economic

loss, or for any claim of such damage, expenses,

or economic loss.

State laws vary. The above limitations or

exclusions may not apply to you.

Safety Information Obtaining Service

Call Fieldpiece Instruments for one-price-

x-all warranty service pricing. Send check or

money order for the amount quoted. Send

your digital manifold, freight prepaid, to

Fieldpiece Instruments. Send proof of date and

location of purchase for in-warranty service.

The meter will be repaired or replaced, at the

option of Fieldpiece, and returned via least cost

transportation.

www.fieldpiece.com

High Side

Low Side

TXV

Compressor

Direction of

Refrigerant

Flow

Condenser

Evaporator

!WARNINGS

DO NOT APPLY MORE THAN 800 PSITO ANY PORT ONTHE MANIFOLD.

FOLLOW ALL EQUIPMENT MANUFACTURER'S TESTING PROCEDURES

ABOVETHOSE IN THIS MANUAL IN REGARDS TO PROPERLY

SERVICING THEIR EQUIPMENT.

What is Superheat and Subcooling?

Why Do I Need to Measure It?

Superheat is the difference between the

actual temperature of the refrigerant (gas) as

it leaves the evaporator and the boiling point

of the refrigerant. After boiling, the refrigerant

continues to heat up. The number of degrees it

“heats up” after boiling is called the superheat.

Under worst case conditions (low load for xed

orice systems), the refrigerant in the evaporator

boils o near the end of the evaporator coil. To

make sure liquid doesn’t enter the compressor

under the worst case condition (low load),

the refrigerator or A/C manufacturers publish

charts indicating what the superheat should be

at a given indoor wet bulb measurement and

outdoor air temperature.

Measuring superheat is your best indication

on a fixed orifice system of the proper

refrigerant charge and operating conditions.

If everything else is working properly and the

actual superheat is too high, add refrigerant. If

it’s too low, evacuate refrigerant.

Subcooling is the dierence between the

boiling point of the refrigerant in the condenser

and the actual temperature of the refrigerant

as it leaves the condenser. The degrees that the

refrigerant“cools down”below the boiling point

is the subcooling. Under worst case scenario

(low load for TXV) the subcooling will continue

to rise. If the subcooling rises too high, liquid

may be backed into the compressor causing

damage and catastrophic failure. See www.

eldpiece.com for more technical articles.

Location of Subcooling Test

Location of Superheat Test

Speciﬁcations

Accuracy: Stated accuracy @ 73°F±9°F (23°C±5°C), <75%RH

Temperature coecient: 0.1 x (specied accuracy) per °C (0°C to

18°C, 28°C to 50°C), per 0.6°F (32°F to 64°F, 82°F to 122°F)

Operating environment: 32°F to 122°F (0°C to 50°C) at <75%

relative humidity

Storage temperature: -4°F to 140°F (-20°C to 60°C), 0 to 80% RH

(with battery removed)

Display size: 5 inches (diagonal)

Backlight: Blue (On for 1 minute unless turned o manually)

Battery: 6 x AA (Battery life below based on alkaline type)

Battery life (SMAN2): Approx. 500 hours (without backlight)

Battery life (SMAN3): Approx. 135 hours (without backlight)

Low battery indication: is displayed when the battery

voltage drops below the operating level

Auto Shut o: 30 minutes of inactivity when APO is activated

Over range: "OL" or "-OL" is displayed

Weight: 3.05 lbs (1.38 kg)

Pressure

Connector Type: Standard 1/4 NPT male are tting

Range: 29”HgV to 500Psig (English), 74 cmHgV to 0 to 4000KPa

(Metric)

Resolution: 0.1 psi/inHg; 1 kPa/cmHg

Accuracy: 29”HgV to 0”HgV: ±0.2”HgV

74 cmHgV to 0 cmHgV: ±0.4 cmHgV

0 to 200 Psig: ±1 Psi,0 to 1378 KPa: ±7 KPa

200 to 500 Psig: ±0.3%+1 Psi, 1378 to 3447KPa: ±0.3%+7 Kpa

Maximum Overload pressure: 800 psig

Units: Psig, kPa, inHg, and cmHg

Microns for Vacuum (SMAN3 only)

Connector Type: Standard 1/4 NPT male are tting

Range: 50 to 9999 microns of mercury

Resolution: 1 micron (50 to 2000 microns), 250 microns (2001 to

5000 microns), 500 microns (5001 to 8000 microns), 1000 microns

(8001 to 9999 microns)

Accuracy: ±10% or ±10 microns, whichever is greater (50 to 1000

microns)

Maximum Overload pressure: 500 psig

Units: Microns of mercury

Temperature

Sensor type: K-Type thermocouple

Range: -76°F to 999.9°F (-60°C to 537.0°C)

Resolution: 0.1°F/°C

Accuracy: ±(1.0°F) -76°F to 199.9°F; ±(0.5°C) -60°C to 93°C

±(2.0°F) 200°F to 999.9°F; ±(1.0°C) 93°C to 537.0°C

Note: All accuracies are after a eld calibration.

Refrigerants

The P-T charts of the following refrigerants come pre-programmed

into your SMAN. In numerical order:

R11, R113, R114, R12, R123, R124, R125, R13, R134A, R22, R23,

R401A(MP39), R401B, R402A, R402B, R404A, R406A, R407A, R407C,

R408A, R409A, R410A, R414B (Hotshot), R416A, R417A, R420A,

R421A, R421B,R422A, R422B(NU22B), R422C(Oneshot), R422D, R424A,

R434A(RS-45), R438A(MO99), R500, R502, R503, R507A

Maintenance

Clean the exterior with a dry cloth. Do not

use liquid.

Battery Replacement

The battery must be replaced when the

battery life indicator is empty. Turn your

SMAN o and replace with 6 AA batteries.

Cleaning the Sensors (SMAN3)

Over time, the vacuum sensor of the SMAN3

may become contaminated with dirt, oil, and

other contaminents introduced from pulling

vacuums.

1 Never use an object such as a cotton swab to clean the sensor,

you may cause damage to the sensor.

2 Open all knobs/valves, and cap all the ports except for the center

port.

3 Drop enough Isopropyl (rubbing) alcohol into the uncapped

port using an eye dropper or funnel so that it can ush out

contaminents.

4 Cap central port and gently shake your SMAN upside down to

clean sensor.

5 Turn right side up. Open a port to pour out the rubbing alcohol

and open all ports to allow sensors to dry out; usually an hour or

so.

Calibration

Temperature

To calibrate your SMAN temperature

thermocouples, adjust the pot on the front of

the meter labeledT1 Cal orT2 Cal.The best way

to calibrate is to match to a known temperature.

Ice water is very close to 32°F and is readily

available. Accuracies of one degree or better

are easily obtained.

1 Stabilize a large cup of ice water by stirring. Pure, distilled water

will be the most accurate.

2 Press the circular button until your SMAN enters Direct

Temperature (T1 T2) mode.

3 Immerse the temp probe in ice water fromT1 and adjust the

T1 Cal pot with a athead screwdriver and let it stabilize, keep

stirring.

4 Repeat Step 3 for temp probe in T2.

Pressure

To calibrate your SMAN pressure sensors to

atmospheric pressure, ensure that your SMAN

is disconnected from any pressure source and

at equilibrium with the ambient pressure.

1 SMAN must be in Superheat/Subcooling, Saturation, orT1 T2

Direct mode.

2 Press the CAL Atmospheric Pressure button and your SMAN will

set the zero point of pressure to the ambient pressure.

Advanced Pressure Calibration

Your SMAN has the ability to perform a linear

adjustment of the pressure sensors based on

refrigerant type, temperature, and pressure.

1 Press circular button until your SMAN enters T1 T2 Direct mode.

2 Plug in a K-type thermocouple into T1. (A bead type

thermocouple is recommended.)

3 Connect the SMAN to a refrigerant cylinder of known refrigerant

using an EPA approved service hose. Be sure to open both HIGH

and LOW side valves on your manifold and cap the unused

ports. (If caps are not available you can connect both ends of a

refrigerant hose to the two unused caps. Note you will lose some

refrigerant into the hose using this method.)

4 Press the REFRIGERANT button to match the refrigerant of the

cylinder you are using.

5 Attach bead-type thermocouple to the side of the cylinder using

tape. It is recommended to attach in the middle of the cylinder.

Important: Let the temperature of the thermocouple stabilize to

the refrigerant temperature for 1 to 2 minutes or until stable.

6 Open the refrigerant cylinder. The pressure inside cylinder should

now be displayed on both HIGH and LOW side pressure sensors.

7 Press the CAL Test Pressure button.

Your SMAN refers to the built-in P-T charts

to compare the temperature of the refrigerant

to the vapor saturation temperature. If the

pressures on your SMAN are within 3psi of the

pressure corresponding to the vapor saturation

temperature, your SMAN will linearly adjust the

pressure readings to match the P-T chart.

Limited Warranty

This meter is warranted against defects in

material or workmanship for one year from

date of purchase. Fieldpiece will replace or

repair the defective unit, at its option, subject

to verication of the defect.

This warranty does not apply to defects

resulting from abuse, neglect, accident,

unauthorized repair, alteration, or unreasonable

use of the instrument.

Any implied warranties arising from the sale of

a Fieldpiece product, including but not limited

to implied warranties of merchantability and

tness for a particular purpose, are limited to

the above. Fieldpiece shall not be liable for loss

of use of the instrument or other incidental or

consequential damages, expenses, or economic

loss, or for any claim of such damage, expenses,

or economic loss.

State laws vary. The above limitations or

exclusions may not apply to you.

Safety Information Obtaining Service

Call Fieldpiece Instruments for one-price-

x-all warranty service pricing. Send check or

money order for the amount quoted. Send

your digital manifold, freight prepaid, to

Fieldpiece Instruments. Send proof of date and

location of purchase for in-warranty service.

The meter will be repaired or replaced, at the

option of Fieldpiece, and returned via least cost

transportation.

www.fieldpiece.com

High Side

Low Side

TXV

Compressor

Direction of

Refrigerant

Flow

Condenser

Evaporator

!WARNINGS

DO NOT APPLY MORE THAN 800 PSITO ANY PORT ONTHE MANIFOLD.

FOLLOW ALL EQUIPMENT MANUFACTURER'S TESTING PROCEDURES

ABOVETHOSE IN THIS MANUAL IN REGARDS TO PROPERLY

SERVICING THEIR EQUIPMENT.

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