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Summary of Contents for Fieldpiece MR53UK
- Page 1 Fieldpiece ® Refrigerant Recovery Machine OPERATOR'S MANUAL Models MR53UK MR53INT...
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Page 2: Table Of Contents
Contents Operation Display and Buttons Important Notice Status Icons and Messages Port Routing Control Safety First! MR53 Refrigerant Flow Dynamic Pressure Measurement Safety Information Recovery Machine Protection Functions Setup Self Test IEC Power Cord with Screw Locks Self Purge Grounding Instructions Purging a Recovery Cylinder 80% Overfill Sensor Cable Port Specifications... -
Page 3: Important Notice
Important Notice Safety First! This is not a consumer machine Only qualified RISK OF EXPLOSION. DANGER: This machine is for use only by qualified personnel trained in service and installation of A/C and/ and certified technicians in the safe use, handling, and transporting or refrigeration equipment shall use this refrigerant of refrigerants. - Page 4 Follow in reverse for safe removal. safety instructions for handling A2L & A3 refrigerants in MR53UK 230V or 240V users must keep the cord plug outside the Temporary Hazardous Zone whenever the cord is live. conjunction with other equipment.
- Page 5 CAUTION – Failure to heed these conditions can cause equipment damage. Intentionally Blank Ensure that all equipment is in good working condition. If the power cable is damaged, it must be replaced by the manufacturer or authorized service center. Do not use on ammonia or salt water systems. Doing so may damage or contaminate your recovery machine.
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Page 6: Safety Information
Safety Information Grounding Instructions This product must be grounded. In the event of an electrical short Setup circuit, grounding reduces the risk of electric shock by providing an escape wire for the electric current. This product is equipped with a Inspect the machine and ensure there is no physical damage. -
Page 7: Specifications
To maintain ATEX compliance, MR53 requires service every 1200 operating ± 0.15 bar (± 2.176 psig) above atmospheric pressure, hours Please contact Fieldpiece for assistance See page 37 ± 0.2 bar (± 6 inHg) vacuum For EU and/or UK Declaration of Conformity: Final Recovery Vacuum: -0.51 bar (-38 cmHg, -14.9 inHg) -
Page 8: Description
• Wide Operating Voltage leaving it in the machine or releasing it into the MR53UK: 85~135V 50HZ environment MR53INT: 185V~265V, 50HZ The MR53 is A2L and A3 compatible for use in a wide range of jobs To avoid contaminating What’s Included... -
Page 9: 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 ice Store in the self purge or recover position. -
Page 10: Operation
Operation Power Cord Storage Port Routing Control Knob Backlit Digital Dual Display and Buttons Mesh Screen Filter Output Port Input Port Overfill Sensor Port (cable not included) IEC Power Cord Inlet with Screw Lock Power Switch (O=Off, I=ON) -
Page 11: Display And Buttons
Cannot zero pressures. Open output port. Start or Stop the motor. High Voltage Warning ZERO SENSOR (press 3 seconds) Motor stopped. Voltage was above 135V (MR53UK); Zero pressure sensors. Ports must be open to atmosphere. Voltage was above 265V (MR53INT). CANCEL ALARM Low Voltage Warning Cancel alarm currently sounding (temporarily mute). -
Page 12: 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 or before purging. -
Page 13: Mr53 Refrigerant Flow
MR53 Refrigerant Flow Dynamic Pressure Measurement Refrigerant liquid and vapor are pulled through MR53 pressure readings are designed only the machine by the pressure difference created for monitoring pressures Do not use MR53 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, MR53 pressure... -
Page 14: Functions
Functions Purging a Recovery Cylinder When the cylinder pressure is higher than expected, you may Self Test have non-condensables at the top of the cylinder Use a second deeply evacuated cylinder to pull out the non-condensables Perform this test to ensure the high pressure cutoff and pump are operational 1. -
Page 15: Direct Liquid/Vapor Recovery
Direct Liquid/Vapor Recovery This is the typical recovery method Vapor and Cylinder liquid lines are routed through your manifold, into the MR53, and out to the recovery cylinder WARNING: When working with A2L or A3 refrigerants, review and follow all of the applicable warnings and cautions listed on pages 4-8. 1. -
Page 16: Push/Pull Recovery
Push/Pull Recovery This method is only for larger systems with at Cylinder least 14 kg of liquid refrigerant It’s used to recover liquid before recovering vapor WARNING: When working with A2L or A3 refrigerants, review and follow all of the applicable warnings and cautions listed on pages 4-8. 1. -
Page 17: Troubleshooting
Open output port by turning the control knob to Recover or Self-Purge. Fault 3 (“Plug O.F.S” shows on display and MR53 beeps) High Voltage Warning (MR53UK) Check for loose connection. Overfill sensor may be broken. Verify overfill with scale. -
Page 18: Maintenance
4. Hand tighten (clockwise) the grooved input fitting. 5. Tighten (clockwise) the securing hex nut with 1/8 turn with a wrench. Do not overtighten. ATEX Compliance Done MR53 units require service every 1200 operating hours to maintain ATEX compliance Contact Fieldpiece for service See page 37... -
Page 19: 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 20: Refrigerant List
Refrigerant List CATEGORY REFRIGERANT NAME FLAMMABILITY CATEGORY REFRIGERANT NAME FLAMMABILITY R414B R124 R417C R227ea R420A R236fa R423A R416A R426A R450A R437A R515A R453A R142b R456A R152a R500 R512A R513A R1234ze(E) R513B R600a R406A R1234ze R413A R1243zf R415B RC318 R440A RE143A R1234yf R444A R134a... - Page 21 CATEGORY REFRIGERANT NAME FLAMMABILITY CATEGORY REFRIGERANT NAME FLAMMABILITY R115 R448A R218 R449A R449B R402B R449C R403B R452A R404A R452C R407A R458A R407C R501 R407D R502 R407E R507A R408A R403A R407F R411A R417A R411B R417B R412A R421A R415A R421B R418A R422A R419A R422B R419B...
- Page 22 CATEGORY REFRIGERANT NAME FLAMMABILITY R433B Intentionally Blank R433C R443A R511A R407H R459B R460A R460B R125 R402A R407B R410A R410B R428A R442A R509A R439A R446A R447A R447B R452B R454A R454B R455A R459A...
- Page 23 MR53UK MR53INT Scan the QR code to visit your Fieldpiece website and register your product. EN, DE, FR, IT, ES, PT, NL, NO, SE, DK, FI Document: Opman MR53UK MR53INT © Fieldpiece Instruments, Inc 2025; v07...
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