Haier DW-25L300, Service Manual

Page 1: ...Service Manual Deep Freezer upright DW 25L92 DW 40L92 DW 40L188 DW 25L300 DW 40L262 Haier Medical Laboratory Products Co Ltd DW 40L92 DW 40L188 DW 40L262 FILE No HMRSM 02 002 ...

Page 2: ...dard 欧式两圆一孔 BE02M7E0N English Standard 英式三扁 flat DW 40L188 BE02P1E1T 220 240 50 EU Standard 欧式两圆一孔 BE02P2E1T English Standard 英式三扁 flat DW 25L300 BE02QDE0N 220 240 50 English Standard 英式三圆 round DW 40L262 BE02Q4E1T 220 240 50 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 BE02QCE...

Page 3: ...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 ...

Page 4: ...Deep temperature storage refrigerator with the temperature at characteristic temperature 40 horizontal and rated effective volume 262L DW XX X XXX X A 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 ma...

Page 5: ...aced 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 refrigerato...

Page 6: ...6 33 Product appearance ...

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Page 9: ...9 33 Dimensions DW 25 L92 DW 40L92 DW 40L188 DW 25L300 DW 40L262 ...

Page 10: ...10 33 Product Specifications ...

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Page 12: ...rming red light alarming Starting up delay protection function 3 Refrigerating system Imported famous brand SECOP DANFOSS compressor is adopted Environment protection free refrigerant German famous brand EBM fan High density insulation layer with heat preservation The evaporimeter is used as rack directly for speed refrigeration 4 Humanity design Drawer design for convenient utilization LED digita...

Page 13: ...from the accessory and install the lock catch on the left side of the box according to Lock Catch Installation Instruction leaflet The press is located in the cabin on rear bottom of the refrigerator with cabin cover The condenser is located at rear of the refrigerator The evaporimeter is located inside the refrigerator as rack ...

Page 14: ...ew hole on the door Use screw to fix the handle 2 Disassemble steps for control board Unscrew the following screws mark ed 1 and 2 in following figure the control board can be fetched Attention there are wires connecting control panel and refrigerator as shown in following ...

Page 15: ...and ports Mark 1 in the above figure is connecting port for power line to connect power line mark 2 in the above figure is sensor port to connect sensor line 3 Installation steps for control board Installation shall be according to 2 4 disassembly steps oppositively ...

Page 16: ...s 5 Overheat alarming function When the actual temperature sensed by the sensor is higher 5 higher or lower than set temperature the overheat alarming light will flicker with interval of 1S accompanies by buzzing with interval of 0 5S Press the buzzing releasing button to release buzzing but the red light will keep on flickering press again can not recover buzzing It is only when the temperature i...

Page 17: ...ature being 5 If the displayed temperature is 40 and temperature of certain point is 35 enter 5 to make display temperature 35 vice versa Press alarm cancel and temperature set for 10 seconds the screen display HS Press two temperature setting buttons simultaneously the number on screen flickers press and to set highest temperature and then loosen It will quit automatically in 3 seconds and the sc...

Page 18: ...en sends out stop order to compressor to shut it down When the inner temperature is returned 1 higher than set temperature the chip sends out stop order via the same procedure to shut the compressor down If temperature return in the refrigerator is too fast less than 5 minutes then take it as 5 minutes 2 Working principle for fan on and off The fan is in synchronous operation with the compressor P...

Page 19: ...19 33 System Schematic Diagram ...

Page 20: ...20 33 System Circuit Diagram ...

Page 21: ...1 The set temperature is high Reset 2 The freezing agent is leaking Find leaking point and weld Refill freezing agent 3 The temperature controller is damaged Change the temperature controller 4 The capillary or system is dirt and stopped Clean capillary or change filter 3 The screen doesn t display temperature It displays F1 1 The temperature sensing probe is in short or open circuit Inspect the t...

Page 22: ...tion needs no resolution Why there is serious frosting in DW 25 40L series Answer it may caused by loosen door or frequent opening the door or one of the small hole allowing condenser to enter the refrigerator is not plugged up This needs to be disposed by service persons Moreover regular defrosting is required to keep better effect normally once per 1 2 months Error of DW 25 40L series sensors an...

Page 23: ...0L262 Secop Danfoss SC12CLX 2 power 220 240V 50Hz 60Hz Start capacitance 117U5019 80uF compressor DW 40L262 Secop Danfoss SC12CLX 2 power 115 60Hz Start capacitance 117U5023 240μF compressor DW 25L92 300 jiaxipera ZBC1115CY power 220 240V 50HzHz Start capacitance TY QZ 108 Refrigerant DW 40L R404a Refrigerant DW 25L R600a Fan motor DW 40L EBM AC230V 50 60Hz 29 5W 1300rpm Display panel DW 25 40L92 ...

Page 24: ...24 33 product nameplate ...

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Page 26: ...on Details Type DW 40L92 DW 40L188 DW 40L262 220 240V 50 Hz 60Hz DW 40L262 115V 60Hz DW 25L92 DW 25L300 R404a 150 210 220 200 R600a 52 90 Note refrigerant type and weight of the nameplate subject shall not misuse of refrigerant ...

Page 27: ...ose Checking the wiring 2 Fan blades are blocked by foreign matters Checking and clean them 3 Fan is damaged Change parts 3 High temperature in cabinet 1 The temperature setting of outage is too high Re set computer board 2 Refrigerant leaks Find leak location and make repair welding Infuse refrigerant again 3 Temperature probe is damaged Change parts 4 Capillary tube or system is blocked by dirt ...

Page 28: ...uit Check the fan and the control circuit Check the compressor and control circuit Check whether there is a refrigerant leakage repair leakage High temperature alarm Lights flashing Check the display board LED lights and control circuit After 15 minutes flashing alarm sound alarm Check the control panel buzzer and control circuits Test Input voltage display is normal Check the compressor and contr...

Page 29: ...white 1 6 0060201602 Right limit block PP 7 7 0070809547 DW 40L262 evaporator 1 8 0060201601 Left limit block PP 7 9 0060809575 Main foaming cabinet 1 10 0070104307 Fix board of compressor 1 11 0072130028 clips 2 12 0070400325D EURO power cable 1 0270400113 British three pin power cable 1 0070401590A British three column power cable 1 0070402229 American power cable1 1 220 240V 50Hz 60Hz 007040222...

Page 30: ...24 0060211012 ROHS sealing cover of Power cable 1 25 00601330269 Support board 1 26 0060812716 ROHS upper hinge board 2 27 0064082716 Screw 4 28 0070809344 Display panel assy 1 29 0070506514 Display film 1 30 00601600103 Decorative strip of condensor 7 31 0270200215 Washer of evaporator 12 32 0270200562 Big door 6 33 0270200563 Small door 1 34 35 0270800221 Foaming door 1 36 0070203433A Door seal ...

Page 31: ... hinge 2 6 0270700332 Evaporator 1 7 0060809635 Foaming cabinet 1 8 0070104306 Fix board of compressor 1 9 0072130028 clips 2 10 0060611001 Power cable cn 1 0070400325D Euro power cable 1 0270400113 British 3 pinpower cable 1 11 0060700668 Compressor ZBC1115CY 1 DW 25L 0074000149 Compressor NL7CLX 1 DW 40L 0075010051 Compressor SC12CL 1 DW 40L 12 0070701909 DW 40L262drier filter 1 13 0073150003 Se...

Page 32: ...060106846 Support board 1 24 0060812716 Upper hinge 188 368 2 25 0064082716 Screw 6 26 0070809343 DW 40L188 display panel 1 27 0070506515 Display film 1 28 0060211132 Drawer I 2 29 0060212152 Drawer II 1 30 0070810979 Foaming door 1 31 0270200177 Door seal 1 32 00601600095 DW 40L262 handle 1 33 0077050001 Screw 2 34 0067412230 ROHS drain box 1 35 0077050051 ROHS screw 2 36 0067412233 Screw hat PE ...

Page 33: ...33 33 Inspired living Haier Medical Laboratory Products Co Ltd Room 403D Brand Building Haier Industrial Park No 1 Haier Road Qingdao China Website www haiermedical com ...