Refco DIGIMON4 Installation guide

DIGIMON-SE
DIGIMON4
Installation and operating guide
Digital Manifold
Installations- und Bedienungsanleitung
Digitale Monteurhilfe
Guide d’installation et d‘utilisation
By-pass électronique
Istruzioni per l’installzione e l’uso
Gruppo Manometrico digitale
Guía de instalación y funcionamiento
Analizador digital

Instruction Manual DIGIMON-SE / DIGIMON4 English
1
Instruction manual
2-way and 4-way digital manifolds
DIGIMON-SE
DIGIMON4
1. Low pressure anchor ¼“ SAE
2. High pressure anchor ¼“ SAE
3. Vacuum anchor ¼“ SAE or 3/8“
4. Refrigerants anchor ¼“ SAE
5. Low pressure valve (blue)
6. High pressure valve (red)
7. Vacuum valve (yellow)
8. Refrigerants valve (black)
9. 2 external K-type thermocouples
10. Clamp thermocouple K-type (optional) P/N 4681466
11. External vacuum sensor DIGIMON-VAC (optional) P/N 4686713

English Instruction Manual DIGIMON-SE / DIGIMON4
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Contents
Important safety notice ..................................................................................................3
Purpose and use .............................................................................................................3
Scope of delivery ...........................................................................................................4
Transport .........................................................................................................................4
Important note .................................................................................................................4
Technical description .....................................................................................................4
Key functions ..................................................................................................................6
Battery charge level indicator........................................................................................6
Application.......................................................................................................................7
Connecting the manifold..............................................................................................12
Evacuating the system .................................................................................................12
Filling the system..........................................................................................................13
Measuring using the Superheat / Subcool modes ....................................................14
Maintenance work on the manifold .............................................................................14
Guarantee ......................................................................................................................14
Environmental issues ...................................................................................................15
Replacement parts and accessories...........................................................................15
Resetting pressure sensors.........................................................................................16
Factory settings ............................................................................................................16
Resetting the external vacuum sensor.......................................................................16
Calibrating pressure sensors ......................................................................................17
Calibrating the temperature display............................................................................18

Instruction Manual DIGIMON-SE / DIGIMON4 English
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Important safety notice
Before working with the manifold, please read the instruction manual
carefully. This manual provides important information regarding the smooth
operation, maintenance and disposal of the manifold.
Purpose and use
The manifold has been developed for measuring and adjusting pressure and
temperature in both mobile and stationary refrigeration equipment.
The manifold must not be used for anything other than the above-stated purposes.
The manifold must not be used with pressures higher than 60bar / 870psi /
6000kPa / 6MPa.
Under no circumstances should the manifold be used as a pressure regulator,
especially not when using nitrogen N2.
The manifold must not be used with the refrigerant ammonia (NH3/ R717).
The manifold should not be exposed to rain or used in damp or wet environments.
Protective goggles and gloves must always be worn when using the manifold.
REFCO products have been specially designed and manufactured for use by
trained refrigeration and air-conditioning service engineers only. Due to the high
pressures and the physical and chemical gases used in refrigeration systems, REFCO
cannot be held liable or responsible for any accidents, injuries or deaths arising during
use of the manifold. REFCO explicitly states that their products must only be sold to
professionally trained experts.

English Instruction Manual DIGIMON-SE / DIGIMON4
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Scope of delivery
Information about the various models and variations of our products can be found in the
REFCO catalogue or at www.refco.ch.
Transport
The manifolds are delivered from the factory in a plastic box, with or without filling
hoses. Manifolds are high-grade instruments and should always be transported and
stored in a box.
Important note:
Remove refrigerants from the manifold and the hoses after use.
The hose connectors hanging freely from the manifold (screw joints / system side) can
be screwed onto the Y-connectors and to the central T-piece, when not in use. This
serves to protect the thread from contamination and damage.
Technical description
The DIGIMON can be used with the following refrigerants:
R11, R113, R114, R12, R123, R124, R13, R134a, R13B1, R22, R227, R23, R290, R32
R401A(Liq), R401A(Vap), R401B(Liq), R401B(Vap), R402A(Liq), R402A(Vap),
R402B(Liq), R402B(Vap), R403B(Liq), R403B(Vap), R404A, R406A (Liq), R406A(Vap),
R407A(Liq), R407A(Vap), R407C(Liq), R407C(Vap), R407F(Liq), R407F(Vap),
R408A(Liq), R408A(Vap), R409A(Liq), R409A(Vap), R410A, R413A(Liq), R413A(Vap),
R414B(Liq), R414B(Vap), R416A, R417A(Liq), R417A(Vap), R420A, R422A(Liq),
R422A(Vap), R422B(Liq), R422B(Vap), R422C(Liq), R422C(Vap), R422D(Liq),
R422D(Vap), R427A(Liq), R427A(Vap), R437A, R438A(Liq), R438A(Vap), R500,
R502, R503, R507, R508A, R508B, R600A, R744, R1234yf, R1234ze
(Liq) = liquid / bubble point, (Vap) = vapour / dew point

Instruction Manual DIGIMON-SE / DIGIMON4 English
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Property
Value
Maximum working
pressure:
Low pressure: 60bar / 870psi / 6000kPa / 6MPa
High pressure : 60bar / 870psi / 6000kPa / 6MPa
Pressure
resolution:
0.01 bar / 0.5psi / 1kPa / 0.001MPa
Pressure units:
bar / psi / kPa / MPa
Positive pressure
display:
0 to 60bar, up to 870psi, up to 6000kPa, up to 6MPa
Negative pressure
display:
0 to -0.95bar, 0 to -13.7psi, 0 to -95kPa, 0 to -0.095MPa
Accuracy class:
Class 1.0
External
thermocouple:
Temperature range:
-40°C to +125°C / -40°F to +257°F
Plug:
K-type
Accuracy of
measurement:
+/- 1°K
Resolution:
0.1°C / 0.1°F
Optional clamp
thermocouple K-
type
Temperature range:
-40°C to +125°C / -40°F to +257°F
For pipe diameters of:
6mm to 38mm / ¼“ to 1 ½“
Plug:
K-type
Accuracy of
measurement:
+/- 1°K
Resolution:
0.1°C / 0.1°F
Ambient
temperature:
0°C to +50°C / +32°F to +122°
Power supply:
4 x 1.5 V AA / Mignon / LR6 batteries
Service life of approx. 50 hours when used continuously.
Storage
temperature:
- 20°C to + 60°C / -4°F to 140°F
Vacuum display without vacuum sensor
Property
Value
Vacuum display:
Bar diagram display
1 bar ca. 0 to -300mbar
2 bars ca. -300 to -380mbar
3 bars ca. -380 to -460mbar
4 bars ca. -460 to -540mbar
5 bars ca. -540 to -620mbar
6 bars ca. -620 to -700mbar
7 bars ca. -700 to -780mbar
8 bars ca. -780 to -860mbar
9 bars ca. -860 to -920mbar
10 bars ca. -920 to ultimate vacuum

English Instruction Manual DIGIMON-SE / DIGIMON4
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Vacuum display with external vacuum sensor
Property
Value
Range:
0 to 10000 Microns
Resolution:
0.1Pa / 1Micron / 0.001mbar / 0.001Torr / 1mTorr /
0.0001psi / 0.0001inHg
Units:
Pa / Micron / mbar / Torr / mTorr / psi / inHg
Accuracy of
measurement:
up to 100 Microns +/- 10 Microns
up to 101 - 750 Microns +/- 45 Microns
Key functions
Power supply ON/OFF
Switch pressure display function
Switch vacuum display function
Switch LCD light on/off (switches off automatically after 1 minute)
Select refrigerant, search forwards (select pressure unit)
Select refrigerant, search backwards (select temperature unit)
Switch function ON or OFF
Confirm function / selection
Battery charge level indicator
If the battery is empty, the indicator will display an entirely white battery symbol. The
batteries must then be replaced in order to guarantee full function.
LIGHT
VAC
SET
LP/HP
SUPERH
SUBC00L
R+
R-
ON/OFF
ON/OFF
LP/HP
VAC
SET
R+
SUPERH
SUBC00L
LIGHT
R-

Instruction Manual DIGIMON-SE / DIGIMON4 English
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Application
Set-up
Insert 4 batteries in the battery compartment at the back of the device.
Caution: Ensure the batteries are inserted observing the correct polarities.
Do not leave empty batteries in the battery compartment. If you will
not be using the DIGIMON for a longer period of time, remove the
batteries from the battery compartment.
Press the button, the device is now switched on.
Check battery charge level indicator.
Illuminating the display
Press the button to switch the display light on or off. The light switches off
automatically after 1 minute.
Automatic shut-off
The DIGIMON switches off automatically approximately 15 minutes after the last
measurement or after the last button has been pressed.
Resetting pressure sensors
By pressing the and buttons the DIGIMON pressure displays are
reset to zero, in order to avoid incorrect measurement values.
Important note:
Depressurise the DIGIMON (remove hoses).
Open the blue and red valves.
To obtain a correct measurement value on the display, the DIGIMON should
not be reset when pressurised or under a vacuum.
LIGHT
SET
LIGHT
ON/OFF

English Instruction Manual DIGIMON-SE / DIGIMON4
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Digital display
Analogue display with memory function
Select refrigerant
Press the or buttons to select the desired refrigerant from the list.
During selection, you will see a flashing "R" on the display.
Press the button to confirm selection of the desired refrigerant. The "R" no
longer flashes on the display.
Important note:
If the refrigerant selection is not confirmed with , the previously selected
refrigerant will remain active.
SET
SET
R-
R+

Instruction Manual DIGIMON-SE / DIGIMON4 English
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Select pressure unit
Hold down the button. Use to select the desired unit. Release both
buttons.
Select temperature unit
Hold down the button. Use to choose between °C and °F. Release
both buttons.
Important note:
The device will save the last pressure and temperature units selected.
Memory function of the analogue pressure display:
Save value (current measurement value): press the and buttons at the
same time
Retrieve memory value: press the button for 3 seconds (display freezes)
Clear display: press the button for 3 seconds saved value is no longer visible
Delete memory value: press the and buttons at the same time
Superheat/Subcool mode
LIGHT
SET
LP/HP
LP/HP
LP/HP
SET
R-
SET
R+
SET
------

English Instruction Manual DIGIMON-SE / DIGIMON4
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displays the difference "K" (F) between the temperature according to the vapour
pressure table (to, tc) and the measured temperature (t1, t2) of the external
thermocouples (9) or the clamp thermocouples (10).
Vacuum display
Press the button to bring up the vacuum display.
Vacuum display values
When evacuating the device, a maximum of 10 bars will be displayed. When the display
remains stable, the ultimate vacuum has been reached and the evacuation time begins.
The display of the ultimate vacuum (10 bars) depends on the vacuum pump's
performance and the atmospheric pressure.
Important note:
The DIGIMON manifold must be switched on before commissioning the attached
vacuum pump. The manifold must be switched on during evacuation.
VAC
SUPERH
SUBC00L
------

Instruction Manual DIGIMON-SE / DIGIMON4 English
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External vacuum sensor (optional)
The external vacuum sensor should be used to measure exact vacuum values. The
sensor should be connected to the system.
Vacuum display
Select pressure unit
Hold down the button. Use the button to select the desired unit.
Release both buttons.
Save value (current measurement value): press the and buttons at the
same time
Retrieve memory value: press the button for 3 seconds (display freezes)
Clear display: press the button for 3 seconds saved value is no longer visible
Delete memory value: press the and buttons at the same time.
LIGHT
SET
VAC
VAC
VAC
SET
R+
SET

English Instruction Manual DIGIMON-SE / DIGIMON4
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Connecting the manifold
a) with DIGIMON-SE
Connect blue hose (1) to suction pressure side of system
Connect red hose (2) to high pressure side of system
Connect yellow hose (3) to vacuum pump
Close both valves (5+6)
b) with DIGIMON4
Connect blue hose (1) to suction pressure side of system
Connect red hose (2) to high pressure side of system
Connect yellow hose 3/8“ (3) to vacuum pump
Connect yellow hose 1/4“ (4) to refrigerant cylinder
Close both valves (5+6)
Evacuating the system
Switch on the manifold
Press the button
Connect the hoses
Switch on vacuum pump
Open all valves
Check vacuum display
When the ultimate vacuum is achieved, close all valves.
Press the button to exit vacuum mode.
Evacuation time varies depending on the size of the system. A small to
medium-sized system requires a minimum evacuation time of 20 minutes.
LP/HP
VAC

Instruction Manual DIGIMON-SE / DIGIMON4 English
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Filling the system
a) with DIGIMON-SE manifold
Disconnect the yellow hose from the vacuum pump and screw it onto the
refrigerant bottle or cylinder.
Open the valve on the refrigerant bottle or cylinder.
Open the blue valve (5) (low pressure side) and let the required amount of
refrigerant to flow in. If the required amount of refrigerant does not flow into the
system, the compressor must be switched on.
After the system has been filled with the desired amount, close the valve on the
refrigerant bottle or cylinder.
Close the blue valve (5).
Check the system's pressure and temperature!
Remove the hoses from the system.
Open valves (5+6).
b) with DIGIMON4 manifold
Disconnect the yellow hose (3/8“) from the vacuum pump and the DIGIMON4
(3) and screw the caps onto the 3/8“ SAE thread.
Open the black valve (8).
Open the valve on the refrigerant bottle or cylinder. Then open the blue valve (5)
and allow the required amount of refrigerant to flow in. If the required amount of
refrigerant does not flow into the system, the compressor must be switched on.
After the system has been filled with the desired amount, close the black valve
(8).
Close the valve on the refrigerant bottle or cylinder.
Open the red valve (6). Check the pressure and temperature on the high and
low pressure sides of the system! If all pressures are in order, close all valves.
Remove the hoses from the system.
Open all valves.

English Instruction Manual DIGIMON-SE / DIGIMON4
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Measuring using the Superheat / Subcool mode
See section "Connecting the DIGIMON manifold".
Plug the K-Type plug of the external thermocouples (9) or the clamp
thermocouple (10) into the DIGIMON (sockets on the right (t1) and left (t2) side
of the housing).
Fix the external thermocouple (9) or the clamp thermocouple (10) with adhesive
tape to the required measuring point on the high pressure or suction pressure
side of the system.
Set the appropriate refrigerant (see section "Select refrigerant").
Switch on the temperature difference display: press SUPERHEAT/ SUBCOOL.
Maintenance work on the manifold
A visual inspection of the connections and filling hoses must be carried out
before each use, to check for mechanical damage.
Do not use aggressive cleaning agents or solvents to clean the device. Gentle
household cleaners and soapy water should be used instead.
Manifold seals are subject to mechanical and age-related wear. Therefore, the
manifold should be regularly tested by the user for leaks.
In case of leaky valves, the piston should be replaced (M4-6-04-R/4).
The special REFCO M4-6-11-T tool should be used to change the sight glass on
the manifold.
The manifold should be checked after the replacement of seals to ensure
there are no leaks.
Guarantee
Your new DIGIMON has been developed in accordance with the latest occupational
health and ergonomic requirements and reflects the latest state-of-the-art technology.
REFCO Manufacturing Ltd has been certified in accordance with DIN EN ISO 9001:
2008. Regular quality control checks as well as an accurate manufacturing process
guarantee reliable functionality and are the basis for the REFCO guarantee, in
accordance with the General Terms and Conditions of Sale and Delivery applicable on
the day of delivery. Damages arising from obvious maltreatment or wear are excluded
from the guarantee.

Instruction Manual DIGIMON-SE / DIGIMON4 English
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Environmental issues
The DIGIMON manifold has been developed for long term use. REFCO takes energy
saving and environmental impact into consideration when procuring materials and
manufacturing its products. REFCO Manufacturing Ltd feels responsible for all of its
products throughout their entire lifespan and has therefore been certified in
accordance with DIN EN ISO 14001 : 2004. When decommissioning the device,
users should observe the disposal regulations applicable in their country.
Replacement parts and accessories
Description
Identifier
P/N
Control knob set
M4-7-SET-B+N+R+Y
4687094
Complete valve set
M2-10-95-R/4
4687105
Valve piston
M4-6-04-R/4
4687093
Sight glass set MS
M4-6-11
4491018
Battery compartment cover 2-way
DIGIMON-SE-BATTERY-COVER
4686772
Battery compartment cover 4-way
DIGIMON4-BATTERY-COVER
4686749
Tool for sight glass assembly
M4-6-11-T
4493169
Plastic case
DIGIMON-SE-CASE
4676730
External K-type thermocouple
DIGIMON-SENSOR-K-TYPE
4681394
Clamp thermocouple K-type
DIGIMON CLAMP
4681466
External vacuum sensor
DIGIMON-VAC
4686713

English Instruction Manual DIGIMON-SE / DIGIMON4
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Resetting pressure sensors
By pressing the and buttons the DIGIMON pressure displays are
reset to zero, in order to avoid incorrect measurement values.
To obtain a correct measurement value on the display, the DIGIMON should
not be reset when pressurised or under a vacuum.
Factory settings
Set the DIGIMON to the "Digital display" screen.
Press the and buttons at the same time for 5 seconds.
Display shows - - - - - - - -
Press the button to exit.
Resetting the external vacuum sensor
Switch off the DIGIMON
Connect vacuum sensor
Hold down the button and switch on the device using the
button.
Display shows VAC-ZERO
Press the button to exit display shows End.
The device can be switched on using the button and is ready for
operation once again.
ON/OFF
SET
ON/OFF
VAC
SET
VAC
LIGHT
LIGHT
SET

Instruction Manual DIGIMON-SE / DIGIMON4 English
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Calibrating pressure sensors
A correct calibration requires a certified monitor.
(e.g. REF-CLASS-GAUGE P/N 4682293)
1. Switch off the DIGIMON
2. Press down the button and switch on the device using the
button.
The display shows "Password" 000
3. Press the / button to select Code 009.
4. Press the button to exit.
The display shows "P-call"
5. Press the button and then the button to calibrate.
400 psi should be displayed on the LP side display
For a correct calibration, there should be no pressure or vacuum in the
DIGIMON.
6. Press the button to select the low pressure side's calibration pressure
(400psi).
7. Press the button to exit.
8. Wait 3-5 seconds until the pressure is stable and press the button
again.
The display shows "0000"
9. Pressurise the DIGIMON with a calibration pressure of 400psi (27.58 bar).
When the pressure is stable, press the button to confirm.
The display shows "LP End"
10. The calibration of the low pressure side has been completed.
11. Press the button to calibrate the high pressure side (HP) Repeat from
Point 6 or press the button to end the calibration.
ON/OFF
R-
SET
SET
SET
R+
SET
R-
SET
R-
R+
ON/OFF
LIGHT

English Instruction Manual DIGIMON-SE / DIGIMON4
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Calibrating the K-Type sensors (using room temperature)
1. Switch off the DIGIMON
2. Plug in the thermocouples (K-type).
Room and measurement temperatures must remain constant at 25 +/-3°C and
be stable for at least 20 minutes. The thermocouple cables must be straight
(unwound).
During calibration, you should neither touch the cables nor the plugs.
3. While holding down the button continuously, switch on the device by
pressing the button once. Continue holding down the Light button until the
display shows, "Password" 000
4. Press the / buttons to scroll to code 018.
5. Press the button once.
Display shows “T-call”
6. Press the button once and then the button once to enter
temperature sensor/clamp calibration mode.
7. During calibration, ensure that both thermocouples are well connected to the
DIGIMON.
The display shows (low pressure side)
The current temperature displayed on the DIGIMON should not deviate by
more than +/-0.5°C from the room temperature.
8. Press the button to confirm.
The display shows:
SET
SET
R-
SET
R-
R+
ON/OFF
LIGHT
LP
00xxx
27.0°C
Temperature code
Current temperature
LP
End
00xxx
27.0°C