User Manual - DW-86L419/579/729/829 Ultra Low Temperature Freezer - Safety, Installation, Specifications

Oct 3, 2026

Uploaded by Finn

User manual for Haier ultra low temperature freezers (DW-86L419/579/729/829). Covers safety labels and critical safety precautions, including ventilation requirements when backup CO2/LN2 systems activate, actions for flammable gas leakage, qualified installation requirements, secure leveling on a firm floor, and dedicated grounded power supply rules. 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.

LanguageEnglish

CategoryHealthcare

FormatPDF

Pages22

Reading Time55 min

AccessFree to download

Safety Labels and Safety Precautions

Usage Precautions

Product Feature

Installation

Freezer parts and control panels

Application method

Alarm

Cleaning maintenance

Recycling the Rechargeable Battery

Optional Accessories

FAQ

Refrigeration and Wiring Diagram

Specifications, Technical data and Packing list

Content Safety Labels and Safety Precautions ............................1 Usage Precautions ..........................................................5 Product Feature...............................................................7 Installation .......................................................................8 Freezer parts and control panels.....................................12 Application method ..........................................................14 Alarm ...............................................................................30 Cleaning maintenance.....................................................31 Recycling the Rechargeable Battery ...............................33 Optional Accessories .......................................................34 FAQ .................................................................................36 Refrigeration and Wiring Diagram ...................................37 Speciﬁcations, Technical data and Packing list ...............39 Technical Data | Model | Net
Volume
(L) | Rated
Voltage
(VAC) | Rated
Frequency
(Hz) | Rated
Power
(W) | Weight
(kg) | Dimensions
(W×D×H)
(mm) | | --- | --- | --- | --- | --- | --- | --- | | DW-86L419 | 419 | 220-240~ | 50 | 800 | 255 | 830x980x1980 | | DW-86L579 | 579 | 220-240~ | 50 | 1000 | 300 | 903x980x1960 | | DW-86L729 | 729 | 220-240~ | 50 | 1700 | 350 | 1049x980x1980 | | DW-86L829 | 829 | 220-240~ | 50 | 1900 | 380 | 1153x980x1980 | Packing List | Name | User
Manual | Instruction to
install sapcers | Plastic
bag | Ice
Scraper | Key | Spacer | | --- | --- | --- | --- | --- | --- | --- | | DW-86L419 | 1 | 1 | 1 | 1 | 4 | 2 | | DW-86L579 | 1 | 1 | 1 | 1 | 4 | 2 | | DW-86L729 | 1 | 1 | 1 | 1 | 4 | 2 | | DW-86L829 | 1 | 1 | 1 | 1 | 4 | 2 | Global Warming Potential | Model | Rated voltage(VAC) | Rated frequency (Hz) | CO2 equivalent(Tonnes) | | --- | --- | --- | --- | | DW-86L419 | 220-240~ | 50 | 0.0036 | | DW-86L579 | 220-240~ | 50 | 0.0041 | | DW-86L729 | 220-240~ | 50 | 0.0048 | | DW-86L829 | 220-240~ | 50 | 0.0051 | This product contains ﬂuorinated greenhouse gases covered by the Kyoto Protocol. Do not vent into the atmosphere. GWP=global warming potential | Refrigerant type | GWP | | --- | --- | | R170 | 20 | | R290 | 20 | Speciﬁcations, Technical data and Packing list Speciﬁcation | Name | Ultra Low Temperature Freezer | | --- | --- | | Model | DW-86L419/579/729/829 | | Exterior/Interior wall material | Coated cold rolled steel | | Outer doors | Coated cold rolled steel | | Inner doors | Plastic framed PS board | | Shelves | Stainless shelves(height adjustable) | | Porthole for testing | 2 | | Insulation | Vacuum insulated with polyurethane foam(non-CFC) | | Compressors | High stage:hermatically sealed
Loe stage:hermatically sealed | | Evaporator | Copper tube | | Condensor | Finned coil | | Refrigerant | R170 R290 | | Temperature controller | Microprocessor controller | | Temperature display | LCD display | | Temperature sensor | RTD(Pt100) | | Alarm device | High/Low temperature alarm, probe failure alarm, Hot condenser alarm, Ambient temperature alarm, Low battery alarm, Door ajar alarm, Power failure alarm | | Remote alarm terminal & Battery | Maximum load:30V DC, 2A
Rechargeable battery:12V DC, charges automatically
DW-86L419/579/729/829:Lead-acid battery | | Electric shock
protection type | I | | Noise | 47dB(A)/48dB(A)/52dB(A)/48dB(A) | | Ambinet temperature | 10 to 32 | | Freezer temperature | -40 to-86 | | Foaming cabinet | HFO-1233zde | | USB | Standard | | RS485 | Standard | | pollution degree | 2 | | overvoltage category | II | Safety Labels and Safety Precautions Dear Haier Customers, Thank 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. Safety labels F

FAQs

What safety precautions are required when the CO2/LN2 backup system is activated?

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.

Can the freezer be installed by non-professional personnel?

Only professional technicians or Haier service personnel can install the unit. Incorrect installation may cause electrical hazards or fire.

What are the key rules for the power supply and grounding?

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.

Oct 3, 2026

Uploaded by Finn