Fieldpiece MR45CAN User manual

Fieldpiece®
Refrigerant
Recovery Machine
OPERATOR'S MANUAL
Model MR45CAN (for models with Zero Stop)

32
Contents
Safety Information. . . . . . 4
Warnings
Caution
Description . . . . . . . . 8
Features
What’s included
Specifications . . . . . . . 10
Certifications . . . . . . . 11
UL Veried Performance Data
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
80% Overll Sensor Cable Port
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
Safety Information
Read, understand, and follow this entire
manual, with special attention given to Warning
and Caution statements before operating this
machine.
For use only by qualified and certified
technicians in the safe use, handling, and
transporting of refrigerants. This machine is
designed to recover most CFC, HFC, HCFC,
and some HFO refrigerants that have an A1 or
A2L flammability rating only. Please refer to
flammable refrigerant safety guides, regional
codes and legislation for more information.
!
WARNING
FAILURE TO HEED THESE HAZARDS AND ACTIONS CAN RESULT IN
SERIOUS INJURY OR DEATH:
• Do not operate in a wet location as electrical shock risk.
• Machine is only rated for use on 110VAC mains power
• Always use a grounded outlet
• Always wear Proper Protective Equipment (PPE), which includes gloves
and safety glasses and earplugs
• Know proper safety and handling requirements of the refrigerant in the
Safety Data Sheet (SDS)
• Avoid breathing refrigerant and oil vapors
• Handle hoses and equipment carefully as refrigerant is under high
pressure and can cause frost bite
• Do not operate in or near explosive atmospheres
• Do not use with hydrocarbons (HC)
• Perform leak detection in accordance with recommended practice to
verify working environment is free from leaking refrigerant as it can be
toxic and or flammable
• Only work in well-ventilated areas (at least 4 air exchanges per hour)
• Ensure power and extension cords are in good working condition to
prevent shock and spark hazards
• Prevent motor overheating by using 14AWG minimum and 50AWG
maximum cord size
ADDITIONAL SAFETY INSTRUCTIONS FOR RECOVERING A2L
REFRIGERANTS (e.g. R-32, R-1234yf, R-1234ze):
• Adhere to local occupational safety codes and possess detailed
knowledge and skills when handling mildly flammable refrigerants
• Have emergency, evacuation, and fire protection plans
• Designate and monitor aTemporary Flammable Zone with a 3-meter
perimeter
• Identify and disable all possible ignition sources within this zone
• Monitor air with a flammable refrigerant leak detector within this zone
• Ensure at least 5 air exchanges per hour within this zone

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Intentionally Blank
• Make power connection of the recovery machine and other equipment
outside of the Temporary Flammable Zone
• Bond the recovery machine outlet port to the recovery tank’s unpainted
fitting with a grounding strap to dissipate static electricity build up
during during recovery process
• Ensure area around machine is free of debris that could enter the
machine and cause accidental sparking
• Always remain in attendance and observant when the machine is
running
• Do not mix flammable refrigerants with air
• Use an evacuated DOT recovery tank
• If system has a suspected leak, stop recovery at 0 psig/bar to prevent
air from entering the recovery tank
• After recovery, purge system with 100% nitrogen before opening
system for repair
!
CAUTION
FAILURE TO HEED THESE HAZARDS AND ACTIONS CAN CAUSE
EQUIPMENT DAMAGE:
• Ensure that recovery machine, hoses, tank and other equipment are in
good working condition
• If the power cable is damaged, it must be replaced by the
manufacturer, its service agent, or similarly qualified persons in order
to avoid a hazard
• Avoid overfilling recovery tanks by following refrigerant manufacturer’s
filling instructions and using a weight scale
• Avoid cross contamination (mixing) of refrigerants
• Ensure mesh screen filter is installed & clean (page 30)
• Use a filter drier on the input port and change it often to protect
machine from contaminated refrigerants
• Never use an overfill sensor as the primary indicator of recovery
cylinder fill status; explosion risk. Use a scale as the primary indicator.
• Ensure power switch is OFF before plugging into power
• Disconnect power and allow fan to stop before opening or servicing the
recovery machine
• Perform a self test periodically (page 22)

98
Description
The MR45 is the first recovery machine
with a smart variable speed DC motor that
accelerates during vapor recovery. It has an
oversize compressor that allows you to pump
refrigerant more easily and quietly than ever
before. Connect your hoses without lifting the
pump o the ground. View status messages and
pressures directly on the large backlit display.
Its lightweight size allows you to easily
transport the machine to and from the job site.
Turn the single rubberized control valve to route
refrigerant through MR45, and use the self-purge
function to pump the last traces of refrigerant
into the recovery cylinder instead of leaving it in
the machine or releasing it into the environment.
Class A2L compatibility for a wide range of jobs.
To avoid contaminating recovered refrigerant,
MR45 automatically stops at 0 psig/bar by default.
Features
• Lightweight (22 lbs/10 kgs)
• 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
• 80% Overfill Sensor Protection Port
• Power Cord Storage
• Ceramic Cylinders
• Class A2L Refrigerant Compatible
• Zero Stop (3 Selectable Auto-stop Levels)
• Self Purge
• Wide Operating Voltage (95 to 130 VAC)
• UL Verified to Section 608 of EPA Clean Air Act
• UL Verified to AHRI Standard 740
What’s Included
MR45CAN Refrigerant Recovery Machine
10 Extra Mesh Screens for Input Port
3 Extra O-rings for Input Port
65 cm IEC Power Cord
Operator’s Manual
1 Year Warranty