DW-40L508/348/278 Deep Freezer Upright Service Manual - Effective models - Maintenance guide

Oct 3, 2026

Upload by jayni

Service manual for the Deep freezer-upright models DW-40L508/348/278, covering effective model configurations and product identification. 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.

LanguageEnglish

CategoryResearch & Report

FormatPDF

Pages35

Reading Time1 h 28 min

AccessFree to download

Designation

Regulations for type naming

Safe Caution

Power supply and wiring requirements

Prohibited materials and fire prevention

Product appearance

Product Specifications

Components and Function Modules

Disassemble Steps

Screen Control System

Control System Principle

System Schematic Diagram

System Circuit Diagram

Inspection and Maintenance Process for Typical Error

Cooling unit parts

Product nameplate

Fault code

Refrigerant perfusion Details

Troubleshooting

How to deal with poor cooling

Spare Parts List

FAQ & A

Service Manual Deep Freezer-upright DW-40L508/348/278 Haier Medical & Laboratory Products Co., Ltd. Effective models This service manual is effective for following models | Model name | Product code | Voltage(V) | Frequency(Hz) | Plug-type | | --- | --- | --- | --- | --- | | DW-40L278 | BE0F1EE1T | 220-240 | 50/60 | European | | DW-40L348 | BE0GB2E0N | 220-240 | 50 | European | | DW-40L508 | BE05T7E1T | 220-240 | 50 | European | | | BE05T5E1T | | | British flat | | | BE05T8E1T | | | British round | | | BE05T9E1T | | | European | | | BE05T3B1T | | 60 | British flat | Content 【Designation】 .......................................................................................................................................................... 4 【Safe Caution】......................................................................................................................................................... 5 【Product appearance】 .............................................................................................................................................. 6 【Product Specifications】 ......................................................................................................................................... 8 【Components and Function Modules】 .................................................................................................................... 9 【Disassemble Steps】.............................................................................................................................................. 12 【Screen Control System】....................................................................................................................................... 13 【Control System Principle】 ................................................................................................................................... 15 【System Schematic Diagram】 ............................................................................................................................... 16 【System Circuit Diagram】..................................................................................................................................... 17 【Inspection and Maintenance Process for Typical Error】 ..................................................................................... 18 【FAQ&A】.............................................................................................................................................................. 19 【Cooling unit parts】............................................................................................................................................... 20 【product nameplate】.............................................................................................................................................. 21 【Fault code】........................................................................................................................................................... 22 【Refrigerant perfusion Details】 ............................................................................................................................. 23 【Troubleshooting】 ................................................................................................................................................. 24 【How to deal with poor cooling】........................................................................................................................... 25 【Spare Parts List】 .................................................................................................................................................. 26 【Designation】 Regulations for type naming: Note: 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

FAQs

What electrical power requirements are specified for these deep freezers?

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.

What safety precautions must be followed before using or servicing the unit?

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.

How should poor cooling be handled?

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.

Oct 3, 2026

Upload by jayni