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Summary of Contents for Fieldpiece MR45
- Page 1 Fieldpiece ® Refrigerant Recovery Machine OPERATOR'S MANUAL Model MR45 (for models with Zero Stop)
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Page 2: Table Of Contents
Status Messages Specifications Other Symptoms Certifications UL Verified Performance Data Maintenance General Mesh Screen Filter Tech Tips General Limited Warranty Setup Obtaining Service Operational Controls Display and Buttons Status Icons and Messages Port Routing Control MR45 Refrigerant Flow Dynamic Pressure Measurement... -
Page 3: Safety Information
Safety Information WARNING Read, understand, and follow this entire FAILURE TO HEED THESE HAZARDS AND ACTIONS CAN RESULT IN manual, with special attention given to Warning SERIOUS INJURY OR DEATH: and Caution statements before operating this • Do not operate in a wet location as electrical shock risk. machine •... -
Page 4: Caution
• 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 Intentionally Blank fitting with a grounding strap to dissipate static electricity build up during during recovery process •... -
Page 5: Description
Description Features • Lightweight (22 lbs) The MR45 is the first variable speed DC motor • Smooth and Fast Operation (1 HP DC Motor) recovery machine with a digital display Pump • Digital Display with Status Messages refrigerant more easily and quietly than ever •... -
Page 6: Specifications
Storage Environment: -4°F to 140°F (-20°C to 60°C) Approved Refrigerants: R12, R134A, R22, R401A (MP39), R401B, High Temp (104°F) Vapor 0.40 Recovery (kg/min) 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... -
Page 7: Tech Tips
Tech Tips 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. General Always purge hoses before recovery. If cylinder is too hot, use an Store in the self purge or recover position. Do not store in the ice bath to reduce the temperature and pressure of the cylinder. -
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
Input Pressure Output Pressure MUTE AUTO-STOP LEVEL MR45 PRESS 3 SEC The icon is shown when MR45 is set to MUTE. Refrigerant Recovery Machine PRESS 3 SEC ZERO SENSOR PRESS 3 SEC OK TO START Motor stopped. Temperatures, voltages, and pressures are currently UNITS safe to start the motor again. -
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: Mr45 Refrigerant Flow
Refrigerant liquid and vapor are pulled through MR45 pressure readings are designed only the machine by the pressure difference created for monitoring pressures Do not use MR45 for by the compressor For maximum performance, diagnostic pressure measurements increase the IN pressure and reduce the OUT If a system’s pressure is stable, MR45 pressure... -
Page 12: Functions
10 seconds at 0 psig (0 kPa), the default auto-stop level. 5. Use a P/T chart or digital manifold to find specified pressure. 7. MR45 is working well if High Pressure Cutoff occurs around 550 psig 6. Open the evacuated vapor port. -
Page 13: Direct Liquid/Vapor Recovery
Press STOP to manually halt recovery at any time. Vapor 12. Set knob to SELF PURGE and press START to empty MR45. MR45 stops automatically when purging is complete. 13. Close manifold and cylinder valves after self purge is complete. -
Page 14: Push/Pull Recovery
CAUTION: Understand all class A2L refrigerant warnings and notices if applicable (pages 4-6). Filter Drier Close valves of recovery cylinder and MR45. Set up as shown in the diagram. Open valves of liquid hose and removal tool at liquid system port. -
Page 15: Troubleshooting
CLOSED. Excessive noise during liquid recovery. Motor Fault 1 MR45 is experiencing a high load. Rotate the knob of MR45 to Motor temperature measured above operating range. Motor throttle the refrigerant flow. stopped. Extremely high ambient temperature, extended liquid recovery time, or high cylinder pressure can be the cause. -
Page 16: Maintenance
Grooved Input Fitting Mesh Screen Filter When the mesh screen filter becomes dirty and clogged, it means it’s working to keep your MR45 O-ring working well for a long time You need to clean or replace this screen often Visit our website for... -
Page 17: Limited Warranty
Fieldpiece shall not be liable for loss of use of the machine or other incidental or consequential damages, expenses, or economic loss, or for any... - Page 18 Intentionally Blank Intentionally Blank...
- Page 19 MR45 © Fieldpiece Instruments, Inc 2023; v33...
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Questions and answers
Does the Fieldpiece MR45 refrigeration recovery unit require periodic calibration?
The provided context does not mention the need for periodic calibration of the Fieldpiece MR45 refrigerant recovery unit.
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