[{"data":1,"prerenderedAt":-1},["ShallowReactive",2],{"detail-sidebar-cat-0-en-105":3,"doc-seo-505692-105":59,"doc-detail-505692-en":130},{"code":4,"msg":5,"data":6},0,"success",[7,13,18,23,28,33,38,43,48,51,55],{"id":8,"doc_module":4,"doc_module_name":9,"category_name":10,"show_sort_weight":11,"slug":12},1,"Document","Story & Novel",90,"story-novel",{"id":14,"doc_module":4,"doc_module_name":9,"category_name":15,"show_sort_weight":16,"slug":17},2,"Literature",80,"literature",{"id":19,"doc_module":4,"doc_module_name":9,"category_name":20,"show_sort_weight":21,"slug":22},4,"Exam",70,"exam",{"id":24,"doc_module":4,"doc_module_name":9,"category_name":25,"show_sort_weight":26,"slug":27},5,"Comic",60,"comic",{"id":29,"doc_module":4,"doc_module_name":9,"category_name":30,"show_sort_weight":31,"slug":32},6,"Technology",50,"technology",{"id":34,"doc_module":4,"doc_module_name":9,"category_name":35,"show_sort_weight":36,"slug":37},7,"Healthcare",40,"healthcare",{"id":39,"doc_module":4,"doc_module_name":9,"category_name":40,"show_sort_weight":41,"slug":42},8,"Research & Report",30,"research-report",{"id":44,"doc_module":4,"doc_module_name":9,"category_name":45,"show_sort_weight":46,"slug":47},9,"Religion & Spirituality",20,"religion-spirituality",{"id":46,"doc_module":4,"doc_module_name":9,"category_name":49,"show_sort_weight":46,"slug":50},"World Cup","world-cup",{"id":52,"doc_module":4,"doc_module_name":9,"category_name":53,"show_sort_weight":52,"slug":54},10,"Lifestyle","lifestyle",{"id":56,"doc_module":4,"doc_module_name":9,"category_name":57,"show_sort_weight":24,"slug":58},19,"General","general",{"code":4,"msg":60,"data":61},"ok",{"site_id":62,"language":63,"slug":64,"title":65,"keywords":66,"description":67,"schema_data":68,"social_meta":123,"head_meta":125,"extra_data":127,"updated_unix":129},105,"en","self-contained-or-active-recovery-equipment-passive-vs-active-recovery","Self-contained or active recovery equipment - Passive vs active recovery","","Guide to self-contained versus system-dependent refrigerant recovery. Explains passive recovery that uses compressor pressure and natural flow from high to low pressure, limited to small systems (15 lbs or less), and describes active recovery using independent compressors or pumps for larger charges and faster results. Covers EPA Section 608 expectations for recovery percentages, required procedures for non-functional compressors, safe handling of trapped refrigerant in compressor oil, and step-by-step preparation such as securing a recovery machine, ventilation, and accessing high and low sides.",{"@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/self-contained-or-active-recovery-equipment-passive-vs-active-recovery/505692/",{"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/self-contained-or-active-recovery-equipment-passive-vs-active-recovery/505692.png","ImageObject",300,407,{"name":92,"@type":93},"Patrick","Person",{"url":74,"name":95,"@type":96},"DocShare","Organization","application/pdf","2026-11-08","2026-10-04",true,{"@type":102,"interactionType":103,"userInteractionCount":39},"InteractionCounter",{"@type":104},"ViewAction",{"@type":106,"mainEntity":107},"FAQPage",[108,114,118],{"name":109,"@type":110,"acceptedAnswer":111},"What is passive (system-dependent) refrigerant recovery and what does it rely on?","Question",{"text":112,"@type":113},"Passive recovery uses the pressure from a functioning compressor to recover refrigerant. Refrigerant flows from high pressure to low pressure into a connected container.","Answer",{"name":115,"@type":110,"acceptedAnswer":116},"When is active (self-contained) recovery required instead of passive recovery?",{"text":117,"@type":113},"Active recovery is required for systems containing more than 15 lbs of refrigerant or when the compressor is functioning is addressed by recovery requirements. It uses a device with its own compressor, pump, or mechanism and is typically faster.",{"name":119,"@type":110,"acceptedAnswer":120},"What safety and procedural steps should technicians take when the compressor is not functioning?",{"text":121,"@type":113},"They must release trapped refrigerant from the compressor oil and ensure safe, effective recovery by securing a recovery machine, vacating the area, ventilating the workspace, and addressing trapped refrigerant before recovery. Recovery also requires access to both high and low sides to maximize removal.","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},505692,1791518988,{"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":39,"is_deleted":4,"is_public":8,"is_downloadable":8,"audit_status":8,"page_count":14,"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":24,"preview_page_count":4},549758146520,"https://ap-avatar.wpscdn.com/avatar/80002397d8c0411e94?_k=1775819394049821470","Self-contained or active recovery equipment  \nActive vs passive equipment. When using a self contained recovery device.  \nSystem Dependent Recovery involves utilizing the pressure from a functioning compressor to recover refrigerant, also known as passive recovery. This process takes advantage of matter flowing from high pressure to low pressure. By connecting a non-pressurized refrigerant container to the system, the refrigerant naturally flows from high to low pressure, aiding in recovery. Passive recovery is limited to systems with 15 lbs or less of refrigerant. Self Contained Recovery employs a device that operates independently of the system being recovered from, using its own compressor, pump, or mechanism. This method is also known as active recovery and is typically faster than passive recovery, minimizing time spent recovering refrigerants. For small appliances, it's essential to identify the refrigerant type before recovery. Active recovery is required for systems containing more than 15 lbs of refrigerant and those with functioning compressors. EPA Section 608 rules dictate specific recovery percentages based on compressor functionality and appliance size. When performing passive recovery on a non-functional compressor, technicians must take measures to release trapped refrigerant, as the recovery process relies on system pressure. In such cases, heating the refrigerant oil helps vaporize the trapped refrigerant, allowing it to separate and be recovered. Passive recovery requires technicians to take specific measures when dealing with trapped refrigerant in Type I appliances. To release refrigerant, they can use a heating blanket or heat gun and tapping the compressor bottom with a rubber mallet. When performing passive recovery on non-operating compressors, it is crucial to access both high and low sides of the system to recover at least 80% of the nameplate charge. System-dependent recovery involves using the pressure of the compressor to capture refrigerant in a pressurized container. This method can be used for appliances with less than 15 pounds of refrigerant. For systems with more than 15 pounds, active recovery is necessary and requires a recovery machine. When the compressor is not working, technicians must recover at least 80% of the appliance charge regardless of the recovery method. If the compressor is operational during active recovery, technicians can choose to either recover 90% of the refrigerant charge or reach a 4-inch vacuum level. In cases where the compressor is working and the capillary tube is restricted, only one access valve is needed for recovery. We're conducting passive recovery because our equipment isn't functioning, so we must take measures to ensure a safe and effective process. To begin with, we should **secure a recovery machine**, vacate the area, ventilate the workspace, and release any trapped refrigerant from the compressor oil. This is crucial because if we don't recover the refrigerant, it may vent, violating regulations and posing environmental hazards. To facilitate this process, we can employ two methods: tapping the compressor with a rubber mallet to prevent damage and heat up refrigerant using a heating blanket. By doing so, we'll help recover as much refrigerant as possible. When performing passive recovery, it's essential to access both the high and low sides of the system to maximize refrigerant recovery.","cbCaiboeXPghG4Ek","https://ap.wps.com/l/cbCaiboeXPghG4Ek","pdf",32430,"English","# Self-contained or active recovery equipment\n## Active vs passive equipment\n## System-dependent vs self-contained recovery\n## Limits, required recovery percentages, and safety steps","[{\"question\":\"What is passive (system-dependent) refrigerant recovery and what does it rely on?\",\"answer\":\"Passive recovery uses the pressure from a functioning compressor to recover refrigerant. Refrigerant flows from high pressure to low pressure into a connected container.\"},{\"question\":\"When is active (self-contained) recovery required instead of passive recovery?\",\"answer\":\"Active recovery is required for systems containing more than 15 lbs of refrigerant or when the compressor is functioning is addressed by recovery requirements. It uses a device with its own compressor, pump, or mechanism and is typically faster.\"},{\"question\":\"What safety and procedural steps should technicians take when the compressor is not functioning?\",\"answer\":\"They must release trapped refrigerant from the compressor oil and ensure safe, effective recovery by securing a recovery machine, vacating the area, ventilating the workspace, and addressing trapped refrigerant before recovery. Recovery also requires access to both high and low sides to maximize removal.\"}]","Self-contained or active recovery equipment - Passive vs active recovery | PDF",1791153152]