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Provides setup and operational guidance such as grounding, controls and status icons, port routing, refrigerant flow handling, dynamic pressure measurement, self test and self purge, and recovery methods for direct liquid/vapor and push/pull. Includes troubleshooting, status messages, maintenance requirements, mesh screen filtration, and warranty/service instructions.",{"@graph":69,"@context":122},[70,84,105],{"@type":71,"itemListElement":72},"BreadcrumbList",[73,77,79,82],{"item":74,"name":75,"@type":76,"position":8},"https://docshare.wps.com","Home","ListItem",{"item":78,"name":9,"@type":76,"position":14},"https://docshare.wps.com/document/",{"item":80,"name":35,"@type":76,"position":81},"https://docshare.wps.com/document/healthcare/",3,{"item":83,"name":65,"@type":76,"position":19},"https://docshare.wps.com/document/fieldpiece-refrigerant-recovery-machine-operators-manual-model-mr45/505328/",{"url":83,"name":65,"@type":85,"image":86,"author":91,"headline":65,"publisher":94,"fileFormat":97,"inLanguage":63,"description":67,"dateModified":98,"datePublished":99,"encodingFormat":97,"isAccessibleForFree":100,"interactionStatistic":101},"DigitalDocument",{"url":87,"@type":88,"width":89,"height":90},"https://docshare.wps.com/thumbnails/fieldpiece-refrigerant-recovery-machine-operators-manual-model-mr45/505328.png","ImageObject",300,407,{"name":92,"@type":93},"Rhys","Person",{"url":74,"name":95,"@type":96},"DocShare","Organization","application/pdf","2026-10-29","2026-10-04",true,{"@type":102,"interactionType":103,"userInteractionCount":34},"InteractionCounter",{"@type":104},"ViewAction",{"@type":106,"mainEntity":107},"FAQPage",[108,114,118],{"name":109,"@type":110,"acceptedAnswer":111},"Who is allowed to operate the MR45 refrigerant recovery machine?","Question",{"text":112,"@type":113},"Only qualified personnel trained in recovery or pumping of refrigerant may operate the machine. It is not a consumer machine.","Answer",{"name":115,"@type":110,"acceptedAnswer":116},"What safety actions are required before using the MR45?",{"text":117,"@type":113},"Ensure proper equipment grounding to reduce electrical shock risk, do not expose the unit to rain, and do not use it to pump hydrocarbons or flammable media. Inhalation of high concentrations of refrigerant vapor can cause serious injury or death.",{"name":119,"@type":110,"acceptedAnswer":120},"How does the MR45 handle final recovery before disconnecting?",{"text":121,"@type":113},"Use the self-purge function to pump the last traces into the recovery cylinder instead of leaving them in the machine or releasing them into the environment.","https://schema.org",{"og:url":83,"og:type":124,"og:title":65,"og:site_name":95,"og:description":67},"article",{"robots":126,"canonical":83},"index,follow",{"doc_id":128,"site_id":62},505328,1791267677,{"code":4,"msg":5,"data":131},{"doc_id":128,"user_id":132,"nickname":92,"user_avatar":133,"doc_module":4,"category_id":34,"category_name":35,"doc_title":65,"doc_description":67,"doc_content":134,"file_id":135,"file_url":136,"file_type":137,"file_size":138,"view_count":34,"is_deleted":4,"is_public":8,"is_downloadable":8,"audit_status":8,"page_count":56,"language":139,"language_code":63,"site_id":62,"html_lang":63,"table_of_contents":140,"faqs":141,"seo_title":142,"seo_description":67,"update_tm":143,"read_time":144,"preview_page_count":4},687207024643,"https://ap-avatar.wpscdn.com/davatar_3d24733baf745e90a7e4bdd5f77d97b2","Fieldpiece® Refrigerant Recovery Machine OPERATOR'S MANUAL  \nModel MR45  \nContents  \nImportant Notice What’s Included Warnings Specifications  \nDescription  \nFeatures  \nCertifications  \nUL Verified Performance Data  \nSafety Information  \nFirst Aid for Refrigerant Exposure General  \nEnvironmental  \nPersonal Protection  \nMR45 Protection  \nSetup  \nOperational  \nGrounding Instructions  \n4  \n4  \n4  \n5  \n6  \n8  \n9  \n2  \nTech Tips  \nGeneral Setup Operational  \nControls  \nDisplay and Buttons Status Icons and Messages Port Routing Control MR45 Refrigerant Flow  \nDynamic Pressure Measurement  \nFunctions  \nSelf Test  \nSelf Purge  \nPurging a Recovery Cylinder Direct Liquid/Vapor Recovery Push/Pull Recovery  \nTroubleshooting  \nStatus Messages Other Symptoms  \nMaintenance  \nGeneral  \nMesh Screen Filter  \nLimited Warranty  \nObtaining Service  \n12  \n14  \n22  \n28  \n30  \n32  \n3  \nImportant Notice  \nThis is not a consumer machine Only qualified personnel trained in the recovery or pumping of refrigerant may operate this machine  \nRead and understand this operator’s manual in its entirety before using MR45 to prevent injury or damage to you or equipment  \nWhat’s Included  \nMR45 Refrigerant Recovery Machine  \n10 Extra Mesh Screens for Input Port  \n3 Extra O-ring for Input Port Operator’s Manual  \n1 Year Warranty  \n ! WARNINGS  \nEnsure proper equipment grounding, electrical shock risk. Do not expose to rain, electrical shock risk. Store indoors. Do not use to pump hydrocarbons, explosion risk.  \nDo 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.  \nRefrigerant liquid can cause frostbite.  \nSpecifications  \nDisplay: 2 x 10000 count LCD with status messages  \nBacklight: Blue color  \nMeasurement rate: 3.3 times per second, nominal Input Port Pressure Sensor Range:  \n-30”Hg to 600 psig (-76 cmHg to 4100 kPa)  \nOutput Port Pressure Sensor Range:  \n-30”Hg to 600 psig (-76 cmHg to 4100 kPa) High Pressure Cutoff: 558 psig (3850 kPa), nominal  \nResolution and Units: 1 psig (1”Hg), 0.05 bar (2 cmHg), 0.01 Mpa (2 cmHg), 5 Kpa (2 cmHg)  \nPressure Sensor Accuracy:  \n± 0.5 “ Hg, ± 1.3 cmHg (Vacuum)  \n± (0.6% of reading +2 psig), ± (0.6% of reading +14 kPa) Final Recovery Vacuum: 14.9”Hg, 38 cmHg  \nCompressor: Twin cylinder reciprocating (oil-less)  \nDC Motor: 1 HP (variable smart speed)  \nPower Source: 120 VAC @ 60 Hz 1 phase  \nNominal Current Draw: 12.0 AAC  \nValve: Single dual-route ball valve  \nInput Port Filtration: 9 mm mesh screen, stainless  \nDimensions: 14.8 inch x 9.8 inch x 13.5 inch  \n376 mmx 250 mmx 344 mm Weight: 22 lbs,(10kg)  \nOperating Environment: 32°F to 104°F (0°C to 40°C)  \nStorage Environment: -4°F to 140°F (-20°C to 60°C)  \nApproved 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 .  \n[US Patent:](US Patent: www.fieldpiece.com/patents)[ www.fieldpiece.com/patents](US Patent: www.fieldpiece.com/patents)  \nDescription  \nThe 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  \nCarry 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  \nFeatures  \n• Lightweight (22 lbs)  \n• Smooth and Fast Operation (1 HP DC Motor)  \n• Digital Display with Status Messages  \n• Reliable Rubberized Construction  \n• Easy to Access Port Design  \n• Hex Nut Secures Input Port During Hose Removal  \n• Power Cord Storage  \n• ","cbCaihAJpGE74uZU","https://ap.wps.com/l/cbCaihAJpGE74uZU","pdf",2006241,"English","# Important Notice\n## What’s Included\n## Warnings\n## Specifications\n## Description\n# Features\n## Certifications\n## Safety Information\n# Setup\n## Grounding Instructions\n# Operational\n## Controls and Display\n## Status Icons and Messages\n## Port Routing Control\n## Dynamic Pressure Measurement\n# Functions\n## Self Test\n## Self Purge\n## Purging a Recovery Cylinder\n## Direct Liquid/Vapor Recovery\n## Push/Pull Recovery\n# Troubleshooting\n## Status Messages\n## Other Symptoms\n# Maintenance\n## General\n## Mesh Screen Filter\n## Limited Warranty\n## Obtaining Service","[{\"question\":\"Who is allowed to operate the MR45 refrigerant recovery machine?\",\"answer\":\"Only qualified personnel trained in recovery or pumping of refrigerant may operate the machine. It is not a consumer machine.\"},{\"question\":\"What safety actions are required before using the MR45?\",\"answer\":\"Ensure proper equipment grounding to reduce electrical shock risk, do not expose the unit to rain, and do not use it to pump hydrocarbons or flammable media. Inhalation of high concentrations of refrigerant vapor can cause serious injury or death.\"},{\"question\":\"How does the MR45 handle final recovery before disconnecting?\",\"answer\":\"Use the self-purge function to pump the last traces into the recovery cylinder instead of leaving them in the machine or releasing them into the environment.\"}]","Fieldpiece - Refrigerant Recovery Machine OPERATOR'S MANUAL - Model MR45 | PDF",1791144488,48]