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Includes model and product code listings, electrical requirements, plug types, safety cautions, and guidance on product appearance, specifications, component modules, and disassembly steps. Provides system-level documentation such as screen control system, control system principles, schematic and circuit diagrams, inspection and maintenance workflows, fault codes, refrigerant perfusion details, troubleshooting, poor-cooling handling, and spare parts list.",{"@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":40,"@type":76,"position":81},"https://docshare.wps.com/document/research-report/",3,{"item":83,"name":65,"@type":76,"position":19},"https://docshare.wps.com/document/dw-40l508348278-deep-freezer-upright-service-manual-effective-models-maintenance-guide/501712/",{"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/dw-40l508348278-deep-freezer-upright-service-manual-effective-models-maintenance-guide/501712.png","ImageObject",300,407,{"name":92,"@type":93},"jayni","Person",{"url":74,"name":95,"@type":96},"DocShare","Organization","application/pdf","2026-10-18","2026-10-03",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 electrical power requirements are specified for these deep freezers?","Question",{"text":112,"@type":113},"The manual specifies AC 220–240V and 50/60Hz. If the used voltage is 10% higher or lower than rated voltage, an auto stabilizer above 4000W shall be equipped.","Answer",{"name":115,"@type":110,"acceptedAnswer":116},"What safety precautions must be followed before using or servicing the unit?",{"text":117,"@type":113},"Use an independent private jack with a reliable three-wire, grounding-type plug. Do not cut/remove the grounding pin, avoid using abraded/damaged power lines, and keep inflammable materials and hazardous corrosive articles out of the freezer.",{"name":119,"@type":110,"acceptedAnswer":120},"How should poor cooling be handled?",{"text":121,"@type":113},"The manual includes a dedicated troubleshooting section for “How to deal with poor cooling,” supported by inspection and maintenance processes, fault codes, and refrigerant perfusion details.","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},501712,1791405617,{"code":4,"msg":5,"data":131},{"doc_id":128,"user_id":132,"nickname":92,"user_avatar":133,"doc_module":4,"category_id":39,"category_name":40,"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":139,"language":140,"language_code":63,"site_id":62,"html_lang":63,"table_of_contents":141,"faqs":142,"seo_title":143,"seo_description":67,"update_tm":144,"read_time":145},3985747859343,"https://ap-avatar.wpscdn.com/davatar_276721f389ce27ea32af1340a28f341c","Service Manual  \nDeep Freezer-upright  \nDW-40L508/348/278  \nHaier Medical & Laboratory Products Co., Ltd.  \nEffective models  \nThis service manual is effective for following models  \n\n| Model name | Product code | Voltage(V) | Frequency(Hz) | Plug-type |\n| --- | --- | --- | --- | --- |\n| DW-40L278 | BE0F1EE1T | 220-240 | 50/60 | European |\n| DW-40L348 | BE0GB2E0N | 220-240 | 50 | European |\n| DW-40L508 | BE05T7E1T | 220-240 | 50 | European |\n|  | BE05T5E1T |  |  | British flat |\n|  | BE05T8E1T |  |  | British round |\n|  | BE05T9E1T |  |  | European |\n|  | BE05T3B1T |  | 60 | British flat |\n\nContent  \n【Designation】 .......................................................................................................................................................... 4  \n【Safe Caution】......................................................................................................................................................... 5  \n【Product appearance】 .............................................................................................................................................. 6  \n【Product Specifications】 ......................................................................................................................................... 8  \n【Components and Function Modules】 .................................................................................................................... 9  \n【Disassemble Steps】.............................................................................................................................................. 12  \n【Screen Control System】....................................................................................................................................... 13  \n【Control System Principle】 ................................................................................................................................... 15  \n【System Schematic Diagram】 ............................................................................................................................... 16  \n【System Circuit Diagram】..................................................................................................................................... 17  \n【Inspection and Maintenance Process for Typical Error】 ..................................................................................... 18  \n【FAQ&A】.............................................................................................................................................................. 19  \n【Cooling unit parts】............................................................................................................................................... 20  \n【product nameplate】.............................................................................................................................................. 21  \n【Fault code】........................................................................................................................................................... 22  \n【Refrigerant perfusion Details】 ............................................................................................................................. 23  \n【Troubleshooting】 ................................................................................................................................................. 24  \n【How to deal with poor cooling】........................................................................................................................... 25  \n【Spare Parts List】 .................................................................................................................................................. 26  \n【Designation】  \nRegulations for type naming:  \nNote: rated volume can be the gross volume or effective volume; the manufacturer can decide it by him according to the actual situation. The effective volume value must be marked on the nameplate whether","cbCaid9KEBUbZGwT","https://ap.wps.com/l/cbCaid9KEBUbZGwT","pdf",2031110,35,"English","# Designation\n## Regulations for type naming\n# Safe Caution\n## Power supply and wiring requirements\n## Prohibited materials and fire prevention\n# Product appearance\n# Product Specifications\n# Components and Function Modules\n# Disassemble Steps\n# Screen Control System\n# Control System Principle\n# System Schematic Diagram\n# System Circuit Diagram\n# Inspection and Maintenance Process for Typical Error\n# Cooling unit parts\n# Product nameplate\n# Fault code\n# Refrigerant perfusion Details\n# Troubleshooting\n## How to deal with poor cooling\n# Spare Parts List\n# FAQ & A","[{\"question\":\"What electrical power requirements are specified for these deep freezers?\",\"answer\":\"The manual specifies AC 220–240V and 50/60Hz. If the used voltage is 10% higher or lower than rated voltage, an auto stabilizer above 4000W shall be equipped.\"},{\"question\":\"What safety precautions must be followed before using or servicing the unit?\",\"answer\":\"Use an independent private jack with a reliable three-wire, grounding-type plug. Do not cut/remove the grounding pin, avoid using abraded/damaged power lines, and keep inflammable materials and hazardous corrosive articles out of the freezer.\"},{\"question\":\"How should poor cooling be handled?\",\"answer\":\"The manual includes a dedicated troubleshooting section for “How to deal with poor cooling,” supported by inspection and maintenance processes, fault codes, and refrigerant perfusion details.\"}]","DW-40L508/348/278 Deep Freezer Upright Service Manual - Effective models - Maintenance guide | PDF",1791023442,88]