Haier DW-86L486 After-Sales Service Manual
  1. Manuals
  2. Brands
  3. Haier Manuals
  4. Freezer
  5. DW-86L486
  6. After-sales service manual

Haier DW-86L486 After-Sales Service Manual

Ultra-low temperature freezers
Hide thumbs Also See for DW-86L486:

Advertisement

Table of Contents

After-sales Service Manual
of Haier Ultra-low
Temperature Freezers
Model
DW-86L486/628/
728/828
DW-86L338/388
A//728(NEW)/72
8J/578J
Picture
Internal training document for Haier service
providers. External disclosure is prohibited.
Model
DW-86L490
DW-86W100
DW-86W420
Picture

Advertisement

Table of Contents
loading

Related Manuals for Haier DW-86L486

Summary of Contents for Haier DW-86L486

  • Page 1 Internal training document for Haier service providers. External disclosure is prohibited. After-sales Service Manual of Haier Ultra-low Temperature Freezers Model Picture Model Picture DW-86L486/628/ DW-86L490 728/828 DW-86L338/388 A//728(NEW)/72 DW-86W100 8J/578J DW-86W420...

  • Page 2: Table Of Contents

    Contents 1 Contents ..............................１ 2 Product Functions and Main Characteristics ..................2 3. Product Promotion Point & Selling Points ....................2 4. Product Appearance Structure Features ....................3 5. Product Component Structure & Names ....................5 6. Product Use Introduction & Product Improvement Introduction ............12 7.

  • Page 3: Product Functions And Main Characteristics

    2 Product Characteristics and Model Meaning 2.1. Main Functions and Characteristics of the Product 2.1.1. The applicable temperature scope in the ultra-low temperature freezer is -40~-86℃; 2.1.2. The freezer has the balanced internal and external pressure design and its doors can be opened and closed easily;...

  • Page 4: Product Appearance Structure Features

    -------Internal training document for Haier service provider. External disclosure is prohibited --- Classification since June 2014, except DW-86W100/420). 3.2.2 Two alarm modes (acoustic silence alarm and light flicker alarm) and multiple protection functions (start delay protection, low voltage compensation protection and HV compensation protection);...
  • Page 5 -------Internal training document for Haier service provider. External disclosure is prohibited --- Classification 4.2 Energy-saving New Structure Series: DW-86L728(NEW)/578J/728J Front View Internal Structural View Rear View Vertical Double-door: DW-86L490 Vertical Double-inner-door narrow series: DW-86L338/388A Horizontal Freezer Series: DW-86W100 Horizontal Freezer Series: DW-86W420...

  • Page 6: Product Component Structure & Names

    -------Internal training document for Haier service provider. External disclosure is prohibited --- Classification 5. Product Component Structure & Names Probe Low temp. High temp. alarm 5.1 Display Structure failure alarm Silence alarm Locked battery Netowrk conden Regulator High ambient Backup temp.
  • Page 7 -------Internal training document for Haier service provider. External disclosure is prohibited --- Classification Fixed cover of main sensor in the refrigerator Inner door handle: disassemble screws from the Clip fixing rotation center of stainless steel the handle when rack: take it out changing.
  • Page 8 -------Internal training document for Haier service provider. External disclosure is prohibited --- Classification 5.2.2 Box Structure (DW-86L728(NEW)/578J/728J) Internal Door: PU foaming structure External Door: foaming structure +V IP Internal door handle: disassemble screws on handle side when changing. Sealing strip in external...
  • Page 9 -------Internal training document for Haier service provider. External disclosure is prohibited --- Classification 5V power output Test hole 1 Internal door Rear threading Test hole 2 Threading hole at the back of the handle hole freezer, four-channel structure (DW-86L486/578/628/728/828) 5.3．1 Electric Control Structure...
  • Page 10 -------Internal training document for Haier service provider. External disclosure is prohibited --- Classification Condenser Storage battery Computer test key: press the test part to check if all relay lights turn on circularly. If not, Temperature Display panel check if the working relay has a...
  • Page 11 -------Internal training document for Haier service provider. External disclosure is prohibited --- Classification (DW-86L578J/728J) 5.3．2 electric control structure Main R232/485 serial control module panel Condenser Remote alarm wiring Storage Power switch battery High temp. relay Battery switch temp. relay Filter...
  • Page 12 -------Internal training document for Haier service provider. External disclosure is prohibited --- Classification 5.4 System Structure Dew prevention Compressor: from pipe the back, the left is high temperature stage and the right is the High temp. temperature condenser stage. High temp.

  • Page 13: Product Use Introduction & Product Improvement Introduction

    -------Internal training document for Haier service provider. External disclosure is prohibited --- Classification 6. Product Use Introduction & Product Improvement Introduction 6.1 Unlocking: Firstly, press the key “UP” or “DOWN”. When “00” is displayed on the display panel, adjust the key "UP "...
  • Page 14 -------Internal training document for Haier service provider. External disclosure is prohibited --- Classification temperature is ≥13℃ (for 5min. continuously), the “hot condenser” indicator turns on and the machine makes the relevant silence alarm. After the power supply is on, the indicator does not turn on and the machine does not make a silence alarm in 3h.
  • Page 15 -------Internal training document for Haier service provider. External disclosure is prohibited --- Classification Remark: (If the product has no heat exchanger sensor from -25℃ to -50℃, failures E3 and E4 will not happen to it.) (If the product has an independent backup system, failures E0, E1, E3 and E4 will not happen to it.) Alternative display time: the actual temperature is displayed for 6s and the failure code is displayed for 6.5 Probe resistance changes with the change of the temperature (probe type: NTC,...

  • Page 16: Main Technical Parameters Of The Product

    -------Internal training document for Haier service provider. External disclosure is prohibited --- Classification 温度 阻值 温度 阻值 温度 阻值 Tempera Resistan Tempera Resistan Tempera Resistan ce (Ω) ce (Ω) ce (Ω) ture (℃) ture (℃) ture (℃) （℃） （Ω） （℃）...
  • Page 17 -------Internal training document for Haier service provider. External disclosure is prohibited --- Classification DW-86L628 DW-86L728 DW-86L828 Model Technical Data Cabinet Type Upright，Simple Door Climate Class Controller Microprocessor Display LED Digital(Minimum Adjustment 1℃) Temp Sensor Thermistor Temperature Sensor PT100 Parameters -40℃～-86℃...
  • Page 18 -------Internal training document for Haier service provider. External disclosure is prohibited --- Classification DW-86L578J DW-86L728J DW-86W100 DW-86W420 Model Technical Data Cabinet Type Upright，Simple Door Chest，Simple Door Climate Class Controller Microprocessor Display LED Digital(Minimum Adjustment 1℃) Temp Sensor Thermistor Temperature Sensor PT100...

  • Page 19: Case Prevention Measures, Product Use And Daily Maintenance Knowledge

    In case of leakage, it is forbidden to ignite or spark nearby. In case of any failure of the refrigerating system, the local after-sales service provider will analyze and feed it back and the engineer of Medical Business Division of Haier will give an instruction to the local after-sales service provider on maintenance according to the actual condition.
  • Page 20 -------Internal training document for Haier service provider. External disclosure is prohibited --- Classification 8.5 Refrigerant Charging Process: 8.5.1 Preparation 1) Refrigerant (R134A, R404A, R290, R508b and R170.) 2) Hansen valve 3) Standard electronic scale (error ≤±2g) 4) Vacuum pump (≥4L) 5) Pressure gauge (high and low pressures shall be read at the same time) See Fig.
  • Page 21 * In order to ensure that the refrigerant is filled accurately, the electronic scale must be used for weighing and charging all refrigerants. * Once Haier headquarter discovers that the freezer makes poor refrigerating performance or fails to refrigerate or the machine is replaced because of failure to meet the above requirement and operation...
  • Page 22 -------Internal training document for Haier service provider. External disclosure is prohibited --- Classification ULT Full Series Refrigerant Charge Refrigerant Refrigerant (Type/Charge) (Type/Charge) 1 High temperature stage Refrigerant improvement Model Low temperature stage (g) time R508 R134A R404A R290 DW-86W100 DW-86W420 Since Apr.

  • Page 23: Schematic Diagram & Circuit Diagram

    -------Internal training document for Haier service provider. External disclosure is prohibited --- Classification 9. Schematic Diagram and Wiring Diagram of the System Capillary A -----------Condenser B -----------Dry filter C ----------- D ----------- 1st-stage compressor Capillary E ----------- F ----------- Gas-liquid separator...

  • Page 24: Specific Control, Work Principle And Parameters

    -------Internal training document for Haier service provider. External disclosure is prohibited --- Classification 10. Specific Control, Work Principle and Parameters DW-86L628 has the temperature control system with a LED computer panel for controlling the switch-on/off state of the compressor. 10.1 Temperature control system with a LED computer panel for controlling the switch-on/off state of the compressor 1) In order to regulate the set value, firstly unlock the machine.
  • Page 25 -------Internal training document for Haier service provider. External disclosure is prohibited --- Classification temperature in the freezer is higher than the maximum temperature set value; B. “Low temperature indicator: if the indicator turns on, the alarm will be displayed because the temperature in the freezer is lower than the minimum temperature set value;...
  • Page 26 -------Internal training document for Haier service provider. External disclosure is prohibited --- Classification 10.4 Battery Control Requirement: There is a storage battery power switch on this equipment and this switch shall be turned on before the freezer is switched on. As long as the switch is on, the AC equipment which meets the relevant requirement will work normally.

  • Page 27: Refrigeration Cycle Prospective And Plan

    -------Internal training document for Haier service provider. External disclosure is prohibited --- Classification If it not the first time, after the low temperature compressor runs continuously for 5h, it shall be switched off for 10min. and then run again automatically.

  • Page 28: Installation & Disassembly Process

    -------Internal training document for Haier service provider. External disclosure is prohibited --- Classification I ----------- J----------- 2nd-stage compressor Evaporator 12. Installation & Disassembly Process 12.1 Installation Position 12.1.1. Prevented from direct sunshine 12.1.2. Good surrounding air ventilation condition 12.1.3. Prevented from a lot of dust 12.1.4.
  • Page 29 -------Internal training document for Haier service provider. External disclosure is prohibited --- Classification See Unpacking Description pasted inside the carton of the package. In particular, please notice that the front and back connection parts shall be removed before the pallet is lifted Refer to Single Page Disassembly pasted oinside the package carton for package disassembly.

  • Page 30: Typical Troubles & Solutions And Common Q&A

    -------Internal training document for Haier service provider. External disclosure is prohibited --- Classification ③Open the external door by 180º. After the product enters the door, assemble the front cover of the compartment to its original condition. Note: The front cover shall be assembled in place. Otherwise, safety and performance problems...
  • Page 31 -------Internal training document for Haier service provider. External disclosure is prohibited --- Classification sealing strip and the door to make air enter the freezer; Second, goods placed by the user into the freezer contains water, which causes that water flows to the sealing strip and the door gets frozen and cannot be opened.
  • Page 32 -------Internal training document for Haier service provider. External disclosure is prohibited --- Classification well (check if there is a leakage), and also troubleshoot. Check if the patch cord of the fan falls or not connected. If 1. The patch cord of the fan falls.
  • Page 33 -------Internal training document for Haier service provider. External disclosure is prohibited --- Classification 3. Change to the backup sensor. 4. When “E3” alarm appears, it will disappear after you press the key “Silence” for 5s. After the high temperature compressor starts for 1min., the low temperature compressor will start.
  • Page 34 -------Internal training document for Haier service provider. External disclosure is prohibited --- Classification High Temperature Alarm Solution: Freezer display temp ≥set temp. for high temp. alarm (set temp. for high temp. alarm≥set No (normal) temp. for running +5℃) Check the control circuit and LED lamps on the The “Alarm”...

  • Page 35: Explosive View

    -------Internal training document for Haier service provider. External disclosure is prohibited --- Classification Low Temperature Alarm Solution: Freezer display temp.≤ set temp. for low temp. alarm (set temp. for low temp. alarm ≤ set temp. for running No (normal) -5℃) The “Alarm”...

  • Page 37: Spare Part List

    15. Spare Part List DW-86L338/388A/486/490 DW-86L388 DW-86L338 DW-86L486 DW-86L490 Material Name Material No. Material No. Material No. Material No. 0074090620 0074090620 0074090620 Compressor (220V50Hz) 0074091167 0074091439 0074091439 Compressor (220V60Hz) 0274000100 Compressor (115V60Hz) Oil separator 0070700552 0070700552 0070700552 0070700552 Filter 0070701749...
  • Page 38 -------Internal training document for Haier service provider. External disclosure is prohibited --- Classification compartment Left protection board of the compartment 0270100587 0270100587 0270100778 0270100275 Internal door handle 0070204827 0070204827 0070204827 0070204827 0070107112 Start to use External door handle since July 1,...
  • Page 39 -------Internal training document for Haier service provider. External disclosure is prohibited --- Classification 0274000098 0274000098 Power switch (115V) Power switch (220V) 0274000098 0274000098 0274000098 0274000098 Battery switch 0070401235 0070401235 0070401235 0070401235 0074090857 Condenser fan (115V) Condenser fan (220V) 0074090857 0074090857...
  • Page 40 -------Internal training document for Haier service provider. External disclosure is prohibited --- Classification 2013 2015 Handle bearing 0070107121 0070107121 0070107121 Front air-inlet grille 0270100177 0270100177 0270100177 Defrosting shovel 0072040150 0072040150 0072040150 Filter screen 0270102160 0270102160 0270102160 0070204188 0070204188 0070204188 Change to...
  • Page 41 -------Internal training document for Haier service provider. External disclosure is prohibited --- Classification DW-86L578J/728J DW-86W100/420 DW-86L578 DW-86L728 DW-86W10 DW-86W42 Material Name Material No. Material No. Material No. Material No. 0074000429 0074000429 0274000190 0074090620 Compressor (220V50Hz) 0274000190 Compressor (220V60Hz) Compressor (115V60Hz)
  • Page 42 -------Internal training document for Haier service provider. External disclosure is prohibited --- Classification Handle bearing 0070107121 0070107121 Front air-inlet grille 0070106933 0270100177 0270101523 0270100082 Defrosting shovel 0072040150 0072040150 0072040150 0072040150 0270200166 Filter screen 0270102159 0270102160 0270102158 0270100990 0270200066 Display panel protection cover...

This manual is also suitable for:

Dw-86l628Dw-86l728Dw-86l828Dw-86l490Dw-86l338Dw-86l388a ... Show all

Table of Contents