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Summary of Contents for Fieldpiece MR45CAN
- Page 1 Fieldpiece ® Refrigerant Recovery Machine OPERATOR'S MANUAL Model MR45CAN...
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Page 2: Table Of Contents
Important Notice Setup Operational What’s Included Controls Warnings Display and Buttons Status Icons and Messages Specifications Port Routing Control MR45CAN Refrigerant Flow Description Dynamic Pressure Measurement Features Functions Certifications Self Test UL Verified Performance Data Self Purge Purging a Recovery Cylinder... -
Page 3: Important Notice
Measurement rate: 3.3 times per second, nominal Read and understand this operator’s manual Input Port Pressure Sensor Range: in its entirety before using MR45CAN to prevent -30” Hg to 600 psig (-76 cmHg to 4100 kPa) Output Port Pressure Sensor Range: injury or damage to you or equipment -30”... -
Page 4: Description
Description Features • Lightweight (22 lbs) The MR45CAN is the first variable speed DC • Smooth and Fast Operation (1 HP DC Motor) motor recovery machine with a digital display • Digital Display with Status Messages Pump refrigerant easier and quieter than ever •... -
Page 5: Certifications
UL Verified Performance Data Read and understand this operator’s manual in its entirety before using MR45CAN to prevent injury or damage to you or equipment. Refrigerant R134A R407C R410A... -
Page 6: Mr45Can Protection
MR45CAN Protection Monitor pressures and temperatures. Self purge MR45CAN after each use. No refrigerant should remain Use only on approved list of refrigerants (page 8). in the machine. Do not use with hydrocarbons. Grounding Instructions Ensure mesh screen filter is installed and clean (page 30). -
Page 7: Tech Tips
Tech Tips Know how much refrigerant you expect to recover before starting. Ensure there’s enough room in the recovery cylinder to not General exceed 80% filled during the job, or monitor and have a second cylinder ready. Store in the self purge or recover position. Do not store in the CLOSED position as trapped air and refrigerant can expand and Always purge hoses before recovery. -
Page 8: Controls
Controls Port Routing Control Knob Power Cord Storage Mesh Screen Filter Input Port Backlit Digital Dual Display and Buttons Output Port... -
Page 9: Display And Buttons
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. Status Icons and Messages The icon rotates when the motor is running. The icon is shown when MR45CAN is set to MUTE. -
Page 10: Port Routing Control
Port Routing Control RECOVER • Input and Output fully open. CLOSED • Set to this fully open position for most of the recovery process. • Input and Output closed. • Set to either closed position to close off both ports during setup. RECOVER (throttled) •... -
Page 11: Mr45Can Refrigerant Flow
Refrigerant liquid and vapor are pulled through MR45CAN pressure readings are designed only the machine by the pressure difference created for monitoring pressures Do not use MR45CAN by the compressor For maximum performance, for diagnostic pressure measurements increase the IN pressure and reduce the OUT If a system’s pressure is stable, MR45CAN... -
Page 12: Functions
5. Press START to create a pressure at the OUT port. 4. Measure the vapor temperature of the pressurized refrigerant 6. MR45CAN is working well if High Pressure Cutoff occurs around 550 cylinder. psig (3800 kPa) within 45 seconds. Cutoff time can increase if a hose 5. -
Page 13: Direct Liquid/Vapor Recovery
20”Hg (50 cmHg) for 10 seconds. Press STOP to manually halt Manifold recovery at any time. 12. Set knob to SELF PURGE and press START to empty MR45CAN. Vapor MR45CAN stops automatically after vacuum reaches 10”Hg (25 cmHg) for 10 seconds. -
Page 14: Push/Pull Recovery
30 lbs (14 kg) of liquid refrigerant It’s used to recover liquid before recovering vapor 1. Close valves of recovery cylinder and MR45CAN. 2. Set up as shown in the diagram. 3. Open valves of liquid hose and removal tool at liquid system port. -
Page 15: Troubleshooting
Ensure power cord and outlet are okay. CLOSED. Excessive noise during liquid recovery. Motor Fault 1 MR45CAN is experiencing a high load. Rotate the knob of MR45CAN Motor temperature measured above operating range. Motor to throttle the refrigerant flow. stopped. Extremely high ambient temperature, extended liquid recovery time, or high cylinder pressure can be the cause. -
Page 16: Maintenance
When the mesh screen filter becomes dirty O-ring and clogged, it means it’s working to keep your Screen MR45CAN working well for a long time You need to clean or replace this screen often Visit our website for information on obtaining extra mesh screens 1. -
Page 17: Limited Warranty
Visit our website to find Fieldpiece dealer. Fieldpiece will replace or repair the defective unit, at your local distributor. its option, subject to verification of the defect. - Page 18 MR45CAN © Fieldpiece Instruments, Inc 2022; v29...
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