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Provides usage precautions, product features, installation guidance, control panel references, alarm handling, cleaning and maintenance, rechargeable battery recycling, optional accessories, and refrigeration/wiring diagram references. Includes technical data, specifications, packing lists, and technical/environmental notes on global warming potential and refrigerants R170/R290.",{"@graph":14,"@context":73},[15,34,56],{"@type":16,"itemListElement":17},"BreadcrumbList",[18,23,27,31],{"item":19,"name":20,"@type":21,"position":22},"https://docshare.wps.com","Home","ListItem",1,{"item":24,"name":25,"@type":21,"position":26},"https://docshare.wps.com/document/","Document",2,{"item":28,"name":29,"@type":21,"position":30},"https://docshare.wps.com/document/healthcare/","Healthcare",3,{"item":32,"name":10,"@type":21,"position":33},"https://docshare.wps.com/document/user-manual-dw-86l419579729829-ultra-low-temperature-freezer-safety-installation-specifications/501602/",4,{"url":32,"name":10,"@type":35,"image":36,"author":41,"headline":10,"publisher":44,"fileFormat":47,"inLanguage":8,"description":12,"dateModified":48,"datePublished":49,"encodingFormat":47,"isAccessibleForFree":50,"interactionStatistic":51},"DigitalDocument",{"url":37,"@type":38,"width":39,"height":40},"https://docshare.wps.com/thumbnails/user-manual-dw-86l419579729829-ultra-low-temperature-freezer-safety-installation-specifications/501602.png","ImageObject",300,407,{"name":42,"@type":43},"Finn","Person",{"url":19,"name":45,"@type":46},"DocShare","Organization","application/pdf","2026-11-07","2026-10-03",true,{"@type":52,"interactionType":53,"userInteractionCount":55},"InteractionCounter",{"@type":54},"ViewAction",15,{"@type":57,"mainEntity":58},"FAQPage",[59,65,69],{"name":60,"@type":61,"acceptedAnswer":62},"What safety precautions are required when the CO2/LN2 backup system is activated?","Question",{"text":63,"@type":64},"The installation place must be well ventilated to prevent harmful or fatal CO2 accumulation. 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Do not vent into the atmosphere.  \nGWP=global warming potential  \n\n| Refrigerant type | GWP |\n| --- | --- |\n| R170 | 20 |\n| R290 | 20 |\n\nSpecifications, Technical data and Packing list  \n Specification  \n\n| Name | Ultra Low Temperature Freezer |\n| --- | --- |\n| Model | DW-86L419/579/729/829 |\n| Exterior/Interior wall material | Coated cold rolled steel |\n| Outer doors | Coated cold rolled steel |\n| Inner doors | Plastic framed PS board |\n| Shelves | Stainless shelves(height adjustable) |\n| Porthole for testing | 2 |\n| Insulation | Vacuum insulated with polyurethane foam(non-CFC) |\n| Compressors | High stage:hermatically sealed\u003Cbr>Loe stage:hermatically sealed |\n| Evaporator | Copper tube |\n| Condensor | Finned coil |\n| Refrigerant | R170 R290 |\n| Temperature controller | Microprocessor controller |\n| Temperature display | LCD display |\n| Temperature sensor | RTD(Pt100) |\n| Alarm device | High/Low temperature alarm, probe failure alarm, Hot condenser alarm, Ambient temperature alarm, Low battery alarm, Door ajar alarm, Power failure alarm |\n| Remote alarm terminal & Battery | Maximum load:30V DC, 2A\u003Cbr>Rechargeable battery:12V DC, charges automatically\u003Cbr>DW-86L419/579/729/829:Lead-acid battery |\n| Electric shock\u003Cbr>protection type | I |\n| Noise | 47dB(A)/48dB(A)/52dB(A)/48dB(A) |\n| Ambinet temperature | 10 to 32 |\n| Freezer temperature | -40 to-86 |\n| Foaming cabinet | HFO-1233zde |\n| USB | Standard |\n| RS485 | Standard |\n| pollution degree | 2 |\n| overvoltage category | II |\n\nSafety Labels and Safety Precautions  \nDear Haier Customers,  \nThank you for purchasing a Haier ULT freezer. Please read this manual carefully to avoid injuries to personnel and damage to the product. Please also follow descriptions marked with the following labels.  \n Safety labels  \nF","cbCaiurS4LQYjSqP","https://ap.wps.com/l/cbCaiurS4LQYjSqP","pdf",2153273,22,"English","# Safety Labels and Safety Precautions\n## Usage Precautions\n## Product Feature\n## Installation\n## Freezer parts and control panels\n## Application method\n## Alarm\n## Cleaning maintenance\n## Recycling the Rechargeable Battery\n## Optional Accessories\n## FAQ\n## Refrigeration and Wiring Diagram\n## Specifications, Technical data and Packing list","[{\"question\":\"What safety precautions are required when the CO2/LN2 backup system is activated?\",\"answer\":\"The installation place must be well ventilated to prevent harmful or fatal CO2 accumulation. If ventilation is poor, consider other methods to ensure safe working conditions.\"},{\"question\":\"Can the freezer be installed by non-professional personnel?\",\"answer\":\"Only professional technicians or Haier service personnel can install the unit. Incorrect installation may cause electrical hazards or fire.\"},{\"question\":\"What are the key rules for the power supply and grounding?\",\"answer\":\"Use a dedicated power supply matching the label requirements, and do not remove the ground prong under any circumstances. If the voltage is 10% higher than rated, install a regulator with capacity 4000 W or higher.\"}]","User Manual - DW-86L419/579/729/829 Ultra Low Temperature Freezer - Safety, Installation, Specifications | PDF",1791021372,55]