Fieldpiece
Refrigerant
Recovery Machine
OPERATOR'S MANUAL
Model MR45
32
Contents
Important Notice . . . . . . 4
What’s Included . . . . . . . 4
Warnings . . . . . . . . . 4
Certifications . . . . . . . 5
Description . . . . . . . . 6
Features
Specifications . . . . . . . 8
Safety Information. . . . . . 10
First Aid for Refrigerant Exposure
General
Environmental
Personal Protection
MR45 Protection
Setup
Operational
Tech Tips . . . . . . . . .12
General
Setup
Operational
Controls . . . . . . . . . 14
Display and Buttons
Status Icons and Messages
Port Routing Control
MR45 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 qualified
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 MR45 to prevent injury
or damage to you or equipment.
What’s Included
• MR45 Refrigerant Recovery Machine
• 10 Extra Mesh Screens for Input Port
• 3 Extra O-ring for Input Port
• Operator’s Manual
• 1 Year Warranty
Certifications
WEEE
Do not dispose through
typical waste streams.
IN ACCORDANCE WITH 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
REFRIGERANTS LISTED IN TABLE 4, AHRI 740-98
!
WARNINGS
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 in the Rain (IP24)
• Wide Operating Voltage (95 to 130 VAC)
• UL Verified to Section 608 of EPA Clean Air Act
• UL Verified to AHRI Standard 740
Description
The MR45 is the first 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 off 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 MR45, 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
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
Output Port Pressure Sensor Range: -30” Hg to 600 psig
High Pressure Cutoff: 558 psig, 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 (Vacuum)
± (0.6% of reading +2 psig)
Final Recovery Vacuum: 14.9” Hg
Compressor: Twin cylinder reciprocating (oil-less)
DC Motor: 1 HP (variable smart speed)
Power Source: 95 to 130 VAC @ 60 Hz 1 phase
Max Current Draw: 12.0 AAC
Valve: Single dual-route ball valve
Input Port Filtration: 9 mm mesh screen, stainless
Dimensions: 14.8” x 9.8” x 13.5”
376 mm x 250 mm x 344 mm
Weight: 22 lbs
Operating Environment: 32°F to 122°F (0°C to 50°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.
1110
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 MR45 to prevent injury or damage to you or equipment.
Environmental
1. Use only within operating conditions (32-122°F)
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.
MR45 Protection
1. Use only on approved list of refrigerants (page 9).
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 MR45.
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)
12 AWG or thicker, up to 100 feet (30 m)
7. Ensure extension cord is grounded, 3 conductor grounded.
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 MR45 after each use. No refrigerant should remain in
the machine.
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