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Haier DW-86L338J, Руководство по обслуживанию

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ULT Energy-saving Series

 After-sales Service Manual 

33 

 

 

Schematic diagram and wiring diagram of DW-86L100J 

 

Lead storage battery 

Wireless  cold 
chain  power 
supply plug 

Display board 

USB adapter board 

USB drive board 

Magnetic  door 
switch 

Inner  temperature 
sensor 

Heat exchanger 

Temperature sensor

 

Condenser sensor 

Remote alarm wiring block

 

Backup system terminal block 

Computer 

board 

Balance hole heating wire 

Filter 

Power switch 

Ground wire 

Neutral line 

Live wire

 

Te

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r

 

Hig
h tem
pe

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tu

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 stag
e p

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ss

 

L

ow 

tem
pe

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re

 stag
e p

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ss

 

L

ow 

tem
pe

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witch

 

C

onde

nse
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an

 

C

onde

nse
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an

 

C

api

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ry 

tube
 he

ati

ng 
w

ire

 

Cryogenic capillary tube 

Heat regenerator 

Evaporator 

Heat exchanger 

condenser 

Filter 

Gas-liquid 
separator 

High temperature capillary tube 

Compressor 

Содержание DW-86L338J

Страница 1: ...bited No YL P3 06 ULT DW 8 Energy saving Series Product type ULT Freezer Product model DW 86L338J 388J 578J 626 728J 828J 490J 100J DW 86W420J 100J Product illustration DW 86L338J 388J DW 86L490J DW 8...

Страница 2: ...ULT Energy saving Series After sales Service Manual 2 Prepared by Reviewed by Approved by Version 01 Issue date...

Страница 3: ...r revision content 01 March 13 2018 Zheng Wendong Addition of content for model DW 86L626 replacement of the original general compressor of DW 86L626 by hydrocarbon compressor Use of hydrocarbon refri...

Страница 4: ...tions and product improvement 20 5 1 Unlocking 20 5 2 Temperature setting 20 5 3 Precautions 20 5 4 Fault code query 21 5 5 Probe resistance changes with temperature probe type NTC which is mainly for...

Страница 5: ...cel capillary tube heating wire after November 2016 41 9 15 Computer board power failure alarm 41 X Perspective view and pan view of refrigeration cycle 41 10 1 Refrigeration principle 41 10 2 Perspec...

Страница 6: ...ace optional it can be connected to the computer display the freezer temperature and alarm message via the computer control the temperature and monitor whether the equipment is normal by operating the...

Страница 7: ...and VIP special insulation material has good insulation effect 2 3 3 Independent multi layer sealing structure and heat insulation system design can effectively eliminate frosting 2 3 4 The specially...

Страница 8: ...ms 2 6 3 The actual operating temperature in the freezer can be downloaded through USB data storage module 2 7 Noise It is world leading with lower noise and it can keep a comfortable working environm...

Страница 9: ...Series After sales Service Manual 9 3 4 Horizontal freezer series DW 86W100J Horizontal freezer series DW 86W420J 3 5 Vertical under table series DW 86L100J Rear view Front view Internal structure Fro...

Страница 10: ...Freezer structure High temperature alarm The sensor malfunction Buzzer Low temperature alarm Low battery Lock Network Operating Voltage stabilization Back up system Door opening alarm Power failure H...

Страница 11: ...ing hole Outlet air grid Inner door handle Remove the side screw of the handle during replacement Unibody freezer entrance Fixing cover of main sensor in freezer Fixing clip of stainless steel shelf T...

Страница 12: ...DW 86L100J Outer door handle Balance hole Foam inner door Inner door seal strip Magnetism switch box for door opening alarm Outer door seal strip Inner door handle of J series Freezer back threading h...

Страница 13: ...ndard configuration for storage of 15 year operation data Stainless steel inner door Clapboard Inner door handle USB Door magnet Outer door 70 mm foam layer 25 mm aviation vacuum VIP Outer door handle...

Страница 14: ...ULT Energy saving Series After sales Service Manual 14 Main sensor housing Main sensor 5 V cold chain and IoT interface Test hole Hinge Caster and feet...

Страница 15: ...e relay that is not on has a fault Temperature adjustment screw Signal cable connection of display board USB signal cable connection Voltage adjustment screw Door opening alarm connection Connection b...

Страница 16: ...Ambient temperature sensor connection 232 485 interface connection Switch power supply Battery switch Main switch Remote alarm and 485 interface Master control board Lead acid battery Filter Socket o...

Страница 17: ...r light Printer Door switch Backup system board 5 V cold chain Frequency conversion signal cable Networking Electromagne tic lock Battery Electromagne tic lock Display board Balance hole Heat exchange...

Страница 18: ...y saving Series After sales Service Manual 18 4 3 2 Installation structure of electric cabinet DW 86W420J Remote alarm and RS485 Main sensor Battery switch Battery Control board Terminal block Compres...

Страница 19: ...R232 485 interface Compressor from the back there is high temperature stage system on the left side and low temperature stage system on the right side High temperature gas liquid separator in tube Hig...

Страница 20: ...t button to enter the current temperature setting value of freezer is flashing displayed press the Up or Down button to modify the temperature setting value of freezer 5 3 Precautions 5 3 1 After init...

Страница 21: ...t be used to freeze a large number of hot items or large volume liquid forcibly and rapidly 5 3 8 If the machine does not refrigerate after 2 3 hours of power on please unplug the power supply and con...

Страница 22: ...fault disappears After E3 fault is displayed and when the compressor of the high temperature stage system is started the compressor of the low temperature stage system starts with a delay of 1 minute...

Страница 23: ...arm light flicker Long buzzer sound alarm Low battery E22 Lead acid battery When the battery is connected the battery voltage is less than 10 5 V after charging for 24 hours Alarm light flicker Lithiu...

Страница 24: ...cal parameters of the product 6 1 List of technical parameters Model DW 86L578J DW 86L728J DW 86L338J DW 86L388J Technical parameter Product attributes Vertical single door Climate type N Control mode...

Страница 25: ...ower W 1000 900 950 Current A 10 8 7 5 Internal dimensions W D H 870 716 1310 mm 590 630 1310 mm 760 630 1310 mm External dimensions W D H 1145 980 1980 mm 860 900 1980 mm 1035 900 1980 mm Net weight...

Страница 26: ...r VIP fluorine free PU foam layer Door thickness 80 Freezer thickness 140mm Seal structure of outer door Single layer silicone seal strip Seal structure of inner door Door lock Y 1 Y 1 Product Accesso...

Страница 27: ...erant type HC Free R600A R1150 R50 6 2 Product nameplate Take DW 86L578J as an example Medical low temperature refrigeration chamber for conservation Medical Device Manufacturing Enterprise License No...

Страница 28: ...which is both the evaporator of high temperature stage system and the condenser of low temperature stage system The low temperature refrigerant absorbs the heat of the object to be cooled in the evap...

Страница 29: ...of the pressure switch are not adjustable C Parameters Voltage 220 V 50 Hz contact capacity 6A 7 4 Characteristics of refrigerant 1 The refrigerant is a mixed working medium which is inflammable and e...

Страница 30: ...the refrigerant pressure is too high the high pressure cannot be sealed when the freezer is refrigerating and continue to vacuumize at low pressure for one hour See Figure 4 4 Close the pressure gauge...

Страница 31: ...t is used for filling When filling above refrigerant the steel cylinder can be filled vertically and filled with gas In order to ensure the accuracy of refrigerant filling all refrigerant must be weig...

Страница 32: ...and R50 of 5 g VIII System schematic diagram and wiring diagram Schematic diagram Wiring diagram High temperature capillary tube Cryogenic capillary tube Filter Intermediate heat exchanger Evaporator...

Страница 33: ...nsor Condenser sensor Remote alarm wiring block Backup system terminal block Computer board Balance hole heating wire Filter Power switch Ground wire Neutral line Live wire Temperature recorder High t...

Страница 34: ...board controls the start and stop of the compressor 1 To adjust the setting value unlocking must be carried out first First press or the temperature setting value flashes press or input the number 06...

Страница 35: ...At this time press the and buttons can adjust the alarm setting value In case of no operation within 10s after setting it will automatically enter the locked state and the temperature display will sto...

Страница 36: ...area accompanied by buzzer alarm The light flashing alarm cannot be canceled until the fault is eliminated while the buzzer sound alarm can be muted for 30 minutes by pressing Buzzer Cancel and the b...

Страница 37: ...voltage reaches 12 5 V after that charging is not needed 3 When the strong current is applied detect the battery voltage for 5 min If it meets the requirements of 10 5 V U 11 5 V carry out the proced...

Страница 38: ...ther the back up battery switch is on or not the remote alarm function is started 9 8 Control of compressor When it is just powered on delay the delay time set by the user the default time is 1 minute...

Страница 39: ...on the computer board which can export the setting temperature in the freezer actual temperature in the freezer ambient temperature voltage seting temperature of high temperature alarm setting temper...

Страница 40: ...to adjust press the button to enter the minute time 5P to set After the setting of minute time 5P long press the Function Selection button for 5 seconds to save and exit After that the temperature dis...

Страница 41: ...cedure after a delay of 3 min while the freezer temperature display restores the display of the freezer temperature The forced heating procedure is completed 9 15 Computer board power failure alarm In...

Страница 42: ...is not more than 32 C The optimal temperature is between 18 C and 25 C and the air conditioning system shall be used if necessary 11 1 6 Height of equipment working position lower than 2000 m 11 1 7 W...

Страница 43: ...shown below Removal of wooden pallet 1 Firstly remove the fixing connector A between the machine compartment back and the wooded pallet with a phillips screwdriver as shown in Figure A 2 Secondly remo...

Страница 44: ...Open the outer door by 180 After the product enters the door install the machine compartment front shield as it is Note It must be installed in place otherwise it will cause safety and performance pro...

Страница 45: ...ure difference between the freezer temperature and the ambient temperature Our freezer s temperature sensing probe is more sensitive so the temperature rises quickly when opening the door 2 Other bran...

Страница 46: ...the condition of power on If the voltage is too low or too high the customer is required to provide a voltage regulator 2 Low temperature stage compressor does not start 1 Same as the causes of not st...

Страница 47: ...is loosened or poor contacted and whether the display board is damaged 7 E2 alarm When the input voltage of the main sensor is 4 9 V the sensor is open circuited when the input voltage of the main sen...

Страница 48: ...rt the system and add refrigerant R508B for low temperature system Or add refrigerant with a needle control valve 12 The display board displays EEE Power transformer fault of control board In case of...

Страница 49: ...emperature stage compressor and low temperature stage compressor are normal Yes No Yes Yes Check whether the power supply is normal No Check whether the fan is normal or the control circuit is normal...

Страница 50: ...ormal case Sound alarm after 15 minutes of light flashing alarm Yes No Yes The Alarm light flashes the Low temperature alarm light flashes Check the LED light and control circuit of the display board...

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