Fieldpiece MR45CAN User manual

Fieldpiece®
Refrigerant
Recovery Machine
OPERATOR'S MANUAL
Model MR45CAN

32
Contents
Important Notice . . . . . . 4
What’s Included. . . . . . . 4
Warnings . . . . . . . . . 4
Specifications . . . . . . . 5
Description . . . . . . . . 6
Features
Certifications . . . . . . . 8
UL Veried Performance Data
Safety Information. . . . . . 9
First Aid for Refrigerant Exposure
General
Environmental
Personal Protection
MR45CAN Protection
Setup
Operational
Grounding Instructions
Tech Tips . . . . . . . . .12
General
Setup
Operational
Controls . . . . . . . . . 14
Display and Buttons
Status Icons and Messages
Port Routing Control
MR45CAN Refrigerant Flow
Dynamic Pressure Measurement
Functions . . . . . . . . . 22
Self Test
Self Purge
Purging a Recovery Cylinder
Direct Liquid/Vapor Recovery
Push/Pull Recovery
Troubleshooting . . . . . . 28
Status Messages
Other Symptoms
Maintenance. . . . . . . . 30
General
Mesh Screen Filter
Limited Warranty . . . . . . 32
Obtaining Service

54
Important Notice
This is not a consumer machine. Only qualied
personnel trained in the recovery or pumping of
refrigerant may operate this machine.
Read and understand this operator’s manual
in its entirety before using MR45CAN to prevent
injury or damage to you or equipment.
What’s Included
MR45CAN Refrigerant Recovery Machine
10 Extra Mesh Screens for Input Port
3 Extra O-ring for Input Port
Operator’s Manual
1 Year Warranty
Specifications
Display: 2 x 10000 count LCD with status messages
Backlight: Blue color
Measurement rate: 3.3 times per second, nominal
Input Port Pressure Sensor Range:
-30”Hg to 600 psig (-76 cmHg to 4100 kPa)
Output Port Pressure Sensor Range:
-30”Hg to 600 psig (-76 cmHg to 4100 kPa)
High Pressure Cutoff: 558 psig (3850 kPa), nominal
Resolution and Units: 1 psig (1”Hg), 0.05 bar (2 cmHg),
0.01 Mpa (2 cmHg), 5 Kpa (2 cmHg)
Pressure Sensor Accuracy:
± 0.5“ Hg, ± 1.3 cmHg (Vacuum)
± (0.6% of reading +2 psig), ± (0.6% of reading +14 kPa)
Final Recovery Vacuum: 14.9”Hg, 38 cmHg
Compressor: Twin cylinder reciprocating (oil-less)
DC Motor: 1 HP (variable smart speed)
Power Source: 120 VAC @ 60 Hz 1 phase
Nominal Current Draw: 12.0 AAC
Valve: Single dual-route ball valve
Input Port Filtration: 9 mm mesh screen, stainless
Dimensions: 14.8 inch x 9.8 inch x 13.5 inch
376 mm x 250 mm x 344 mm
Weight: 22 lbs, (10kg)
Operating Environment: 32°F to 104°F (0°C to 40°C)
Storage Environment: -4°F to 140°F (-20°C to 60°C)
Approved Refrigerants: R12, R134A, R22, R401A (MP39), R401B,
R401C, R402A, R402B, R404A, R406A, R407A, R407B, R407C,
R407D, R408A, R409A, R410A, R411A, R411B, R412A, R500, R502,
R507, R509.
US Patent: www.fieldpiece.com/patents
!
WARNINGS
Ensure proper equipment grounding, electrical shock risk.
Do not expose to rain, electrical shock risk. Store indoors.
Do not use to pump hydrocarbons, explosion risk.
Do not use to pump flammable media, explosion risk.
Inhalation of high concentrations of refrigerant vapor can
block oxygen to the brain causing injury or death.
Refrigerant liquid can cause frostbite.

76
Features
• Lightweight (22 lbs)
• Smooth and Fast Operation (1 HP DC Motor)
• Digital Display with Status Messages
• Reliable Rubberized Construction
• Easy to Access Port Design
• Hex Nut Secures Input Port During Hose Removal
• Power Cord Storage
• Ceramic Cylinders
• Self Purge
• Operation Down to 95VAC
• UL Verified to Section 608 of EPA Clean Air Act
• UL Verified to AHRI Standard 740
Description
The MR45CAN is the rst variable speed DC
motor recovery machine with a digital display.
Pump refrigerant easier and quieter than ever
before. Connect your hoses without navigating
around dark tight spaces or picking the pump o
the ground. View status messages and pressures
directly on the big bright display.
Carry the machine to and from the job site
easily and well protected from environmental
hazards.Turn the single rubberized control valve
to route refrigerant through MR45CAN, and use
the self-purge function to pump the last traces
into the recovery cylinder instead of being left in
the machine or released into the environment.

98
Certifications
WEEE (Do not dispose through
typical waste streams.)
IN ACCORDANCEWITH SECTION 608 OF THE CLEAN AIR ACT:
THIS EQUIPMENT HAS BEEN CERTIFIED BY UNDERWRITERS
LABORATORIES INC. TO MEET EPA’S MINIMUM REQUIREMENTS FOR
RECOVERY EQUIPMENT INTENDED FOR USE WITH CATEGORY III,
IV, AND V REFRIGERANTS OUTLINED IN AHRI 740-2016,TABLE 4.
<SA44565>
UL Verified Performance Data
Refrigerant R22 R134A R407C R410A
Liquid Recovery
(kg/min) 4.7 2.9 5.1 5.6
Vapor Recovery
(kg/min) 0.28 0.28 0.33 0.33
Final Recovery Vacuum
(kPa) 50.8 50.8 50.8 50.8
Residual Trapped
Refrigerant (kg) 0.005 0.008 0.004 0.005
High Temp (104°F) Vapor
Recovery (kg/min) 0.40 - - -
Safety Information
First Aid for Refrigerant Exposure
Inhaled: Move to fresh air immediately.
Eye: Immediately flush eye with water. Seek medical attention.
Skin: Immediately flush skin with water. Seek medical attention.
General
1. This is not a consumer machine. Only qualified personnel trained
in the recovery or pumping of refrigerant may operate this
machine.
2. Read and understand this operator’s manual in its entirety
before using MR45CAN to prevent injury or damage to you or
equipment.
Environmental
1. Use only within operating environment specification.
2. Ensure fan opening is clear of debris.
3. Explosion and fire risks:
Do not use near sewer lines.
Do not use in poorly ventilated enclosed areas.
Do not use near gasoline, acetylene, or other flammable gases.
Do not use to pump hydrocarbons.
Do not use near flames or sparks.
Assume all components are pressurized.
Personal Protection
1. Frostbite danger. Be careful using hoses.
2. Use personal protective equipment:
Wear safety goggles.
Wear earplugs if using for long durations.
Wear protective gloves.

1110
MR45CAN Protection
1. Use only on approved list of refrigerants (page 8).
2. Do not use with hydrocarbons.
3. Ensure mesh screen filter is installed and clean (page 30).
Setup
1. Repair any damaged parts before using.
2. Disconnect power and allow fan to stop before opening or
servicing MR45CAN.
3. Perform self test periodically (page 22).
4. Ensure power cord is not damaged.
5. Ensure all equipment is grounded.
6. Extension cord options:
14 AWG or thicker, up to 50 feet (15 m)
DO NOT USE 18 AWG!
NOTICE: Risk of Property Damage. The use of an undersized
extension cord will cause voltage to drop resulting in power loss
to the motor and overheating.
7. Ensure extension cord is grounded, 3 conductor, and is not
damaged.
Operational
1. Use correct refrigerant hoses with ball valve shutoffs.
2. Keep track of the current amount of refrigerant in the cylinder.
Refrigerant scales are a good way to do this.
3. Overfilling a cylinder past 80% can cause an explosion and
violates DOT laws.
4. Close cylinder off from refrigerant if it reaches 80% of its capacity.
5. Use only DOT CFR 49 or UL-approved refrigerant cylinders for the
refrigerant being recovered.
6. Use recommended accessories.
7. Use a small filter drier on the input port and change it often to
protect machine from contaminated refrigerants.
8. Monitor pressures and temperatures.
9. Self purge MR45CAN after each use. No refrigerant should remain
in the machine.
Grounding Instructions
This product must be grounded. In the event of an electrical short
circuit, grounding reduces the risk of electric shock by providing an
escape wire for the electric current. This product is equipped with a
cord having a grounding wire with an appropriate grounding plug.
The plug must be plugged into an outlet that is properly installed and
grounded in accordance with all local codes and ordinances.
WARNING – Improper installation of the grounding plug is able to
result in a risk of electric shock. When repair or replacement of the cord
or plug is required, do not connect the grounding wire to either flat
blade terminal.The wire with insulation having an outer surface that is
green with or without yellow stripes is the grounding wire.
Check with a qualified electrician or serviceman when the
grounding instructions are not completely understood, or when in
doubt as to whether the product is properly grounded. Do not modify
the plug provided; if it does not fit the outlet, have the proper outlet
installed by a qualified electrician.

1312
Tech Tips
General
1. Store in the self purge or recover position. Do not store in the
CLOSED position as trapped air and refrigerant can expand and
damage components.
2. For extended storage, purge with nitrogen, set to RECOVER, and
screw non-sealing caps onto the ports.
3. Recovery machines are not vacuum pumps and should not be
used for deep evacuations.
4. Do not run the machine without the mesh screen filter (page 30).
Doing so will void the warranty and damage the machine.
5. Understand the refrigerant safety data sheet (SDS).
Setup
1. Know the refrigerant of the system and make sure your recovery
cylinder matches that type.
2. Hoses:
Short as possible (3/8”hose with 1/4”fitting).
Core depressors removed.
Ball valve shutoffs instead of low loss fittings.
Replace if worn.
3. Manifold gauges are not necessary for recovery but can make it
more convenient and increase speed by having 2 system hook
ups.
4. Use a Schrader valve core removal tool to temporarily remove
valve cores from service valves.
5. Use the push-pull method if recovering over 30 lbs (14kg).
6. Evacuate your empty recovery cylinders to 29.6”Hg (75 cmHg)
before use.
7. Know how much refrigerant you expect to recover before
starting.
8. Ensure there’s enough room in the recovery cylinder to not
exceed 80% filled during the job, or monitor and have a second
cylinder ready.
9. Always purge hoses before recovery. If cylinder is too hot, use an
ice bath to reduce the temperature and pressure of the cylinder.
10. If cylinder pressure is higher than expected, you can purge non-
condensables into another cylinder (page 23).
Operational
1. Recover as much liquid as possible before recovering vapor.
2. Recovery is faster when the recovery cylinder is cooler.
3. You can use a heat gun to warm refrigerant lines to boil trapped
refrigerant.
4. Recover from both suction and liquid lines at the same time for
faster vapor recovery.

Port Routing Control Knob
Input Port
Mesh Screen Filter
Backlit Digital Dual Display and Buttons
Output Port
Power Cord Storage
1514
Controls

1716
Display and Buttons
Input Pressure Output Pressure
Status Icons and Messages
START/STOP
Start or Stop the motor.
ZERO (press 3 seconds)
Zero pressure sensors. Ports must be open to atmosphere.
CANCEL ALARM
Cancel alarm currently sounding (temporarily mute).
MUTE (press 3 seconds)
Toggle mute for all sounds (setting is saved).
UNITS
Select pressure/vacuum units.
Status Icons and Messages
The icon rotates when the motor is running.
The icon is shown when MR45CAN is set to MUTE.
OK TO START
Motor stopped. Temperatures, voltages, and pressures are currently
safe to start the motor again.
COMPLETE
Motor stopped. Purge or recovery has reached 10”Hg or 20”Hg
(25 cmHg or 50 cmHg) vacuum for 10 sec.
Input Closed
Cannot zero pressures. Open input port.
Output Closed
Cannot zero pressures. Open output port.
High Voltage Warning
Motor stopped. Voltage was above 130 VAC.
Low Voltage Warning
Motor stopped. Voltage was below 95VAC.
High Pressure Cutoff
Motor stopped. Output (cylinder) approached dangerous pressure.
Low Pressure Cutoff
Motor stopped. Input reached 10”Hg or 20”Hg (25 cmHg or 50
cmHg) vacuum for 10 sec.
Motor Fault 1
Motor stopped. Motor temp. measured above operating range.
Motor Fault 2 (“throttle” shows on display)
Motor stopped. Motor current (amps) rose above operating range.
Throttle RECOVERY to reduce cylinder pressure (page 19).
Motor Fault 3
Motor stopped for unknown reason.

1918
Port Routing Control
OR
OR
CLOSED
• Input and Output closed.
• Set to either closed position to close
off both ports during setup.
OR
OR
SELF PURGE
• Input closed, Output open.
• After recovery is complete, set to
this position to close the IN port
before you START the purge.
OR
OR
RECOVER
• Input and Output fully open.
• Set to this fully open position for
most of the recovery process.
OR
OR
RECOVER (throttled)
• Input and Output partially open.
• Rotate away from RECOVER in
either direction to reduce liquid
slugging if knocking occurs.This
slows the flow of refrigerant
so the machine operates more
smoothly.
• Only throttle as much as needed for
smooth operation.