Haier DW-25L92, DW-40L92, DW-40L188, DW-40L262, DW-25L300 Service Manual

Service Manual

Deep Freezer-upright

DW-25L92•DW-40L92•DW-40L188•DW-25L300•DW-40L262

Haier Medical & Laboratory Products Co., Ltd.

FILE No: HMRSM-02-002

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Effective models

This service manual is effective for following models

Model name

Product code

Voltage(V)

Frequency(Hz)

Plug-type

DW-25L92

BE02M9E0N

220-240

English Standard

英式三扁(flat)

DW-40L92

BE02M8E0N

220-240

EU Standard

欧式两圆一孔

BE02M7E0N

English Standard

英式三扁(flat)

DW-40L188

BE02P1E1T

220-240

EU Standard

欧式两圆一孔

BE02P2E1T

English Standard

英式三扁(flat)

DW-25L300

BE02QDE0N

220-240

English Standard

英式三圆(round)

DW-40L262

BE02Q4E1T

220-240

EU Standard

欧式两圆一孔

BE02Q3E1T

English Standard

英式三扁(flat)

BE02Q5E1T

English Standard

英式三圆(round)

BE02QBE0N

50/60

English Standard

英式三扁(flat)

BE02Q0E0A

America Standard

美式

BE02QCE0N

115

America Standard

美式

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Content

【Designation】 .......................................................................................................................................................... 4

【Safe Caution】......................................................................................................................................................... 5

【Product appearance】 .............................................................................................................................................. 6

【Product Specifications】 ....................................................................................................................................... 10

【Components and Function Modules】 .................................................................................................................. 12

.【Disassemble Steps】............................................................................................................................................. 14

【Disassemble Steps】.............................................................................................................................................. 14

【Screen Control System】....................................................................................................................................... 16

【Control System Principle】 ................................................................................................................................... 18

【System Schematic Diagram】 ............................................................................................................................... 19

【System Circuit Diagram】..................................................................................................................................... 20

【Inspection and Maintenance Process for Typical Error】 ..................................................................................... 21

【FAQ&A】 .............................................................................................................................................................. 22

【Cooling unit parts】............................................................................................................................................... 23

【product nameplate】 .............................................................................................................................................. 24

【Refrigerant perfusion Details】 ............................................................................................................................. 26

【Troubleshooting】 ................................................................................................................................................. 27

【How to deal with poor cooling】........................................................................................................................... 26

【Used Spare Parts Photo Gallery】 ......................................................................................................................... 27

【Testing Date】 ....................................................................................................................................................... 28

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【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 effective volume or gross volume is marked in the product name.

Examples:

DW-40L262 means that the Deep temperature storage refrigerator with the temperature at

characteristic temperature -40℃, horizontal and rated effective volume 262L.

XX X XXX

Design No. is expressed with pinyin character sequence

Rated volume value is shown with L

Classification of low temperature cabinet (W is horizontal and L is vertical)

It shows the temperature at the characteristic point inside cabinet (without minus mark) (For example: temperature at the characteristic point inside cabinet -40℃ can be expressed as 40) Low temperature cabinet

Deep temperature cabinet

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【Safe Caution】

1. If the voltage used is 10% higher or lower than rated voltage, an auto stabilizer above 1000W shall be equipped. Power line that required for lengthening shall be with a cross section no less than 1mm.

2. An independent private jack shall be used and reliably connected. The power line for refrigerator is equipped with three-wire, grounding-type plug which meets standard three-wire, grounding-type receptacle. In no circumstance should the third plug foot (grounding) of the power line be cut or removed. The plug shall be touchable after installation of refrigerator. Power line or plug with abrasion shall not be used. Abraded or damaged power line shall be sent to maintenance point designated by the manufacturer or be replaced by qualified personnel.

3. Hazardous articles of inflammable, explosive, materials such as acid and alkali with strong corrosion are prohibited in the refrigerator.

4. Please don’t use flammable spray closely to avid fire.

5. When there is inflammable gas such as coal gas leakage:

● Shut the valve for leakage;

● Open the door and window for ventilation;

● Don’t pull out or insert power plug of the refrigerator.

6. Prevent children playing in the refrigerator to avoid accident.

7. Once the power of the refrigerator is cut, it shall be re-connected at least five minutes later to avoid damage on compressor or the system. The power shall be cut for maintenance. Do not roll or damage the power line.

8. Please wear protective equipments during accessing to the refrigerator to avoid freezing injury. When the refrigerator is scrapped, please remove the doorman. The scrapped refrigerator shall be away from fire and be sent to appointed site for disposition.