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CAUTION

BEFORE SERVICING THE UNIT, READ THE "SAFETY
PRECAUTIONS" IN THIS MANUAL.

REFRIGERATOR

SERVICE MANUAL

MODEL: GR-532/572

http://biz.lgservice.com

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Summary of Contents for GR-532

Page 1: ...CAUTION BEFORE SERVICING THE UNIT READ THE SAFETY PRECAUTIONS IN THIS MANUAL REFRIGERATOR SERVICE MANUAL MODEL GR 532 572 http biz lgservice com ...

Page 2: ...ectric shock unplug prior to servicing 3 In case of testing with power on wear rubber gloves to prevent electric shock 4 If you use any appliances check regular current voltage and capacity 5 Don t touch metal products in cold freezer with wet hand It may cause frostbite 6 Prevent water flowing to electric elements in mechanical parts 7 When you stand up during observing the lower part with the up...

Page 3: ...ration is over add the quantity in grams of R 134a to the refrigerant system Remember that every system has an exact quantity of R 134a with a tolerance of 5 grams that can be added Figure 4 Before performing this operation if the vacuum pump and refilling cylinder are connected make sure that the valve placed between the vacuum pump and refilling tube are closed to keep the Freon for adding to th...

Page 4: ...ting Type EVAPORATOR Fin Tube Type CONDENSER Wire Condenser REFRIGERANT R 134a 135g DEFROSTING DEVICE HEATER SHELF OPTION ITEMS SPECIFICATIONS FREEZER 126 NET CAPACITY REFRIGERATOR 334 TOTAL 460 DIMENSIONS mm 755 W X713 D X1777 H NET WEIGHT kg 83 COOLING SYSTEM Fan Cooling TEMPERATURE CONTROL Knob Dial Full Automatic DEFROSTING SYSTEM Heater Defrost With a Timer OUT CASE Pre Coated Metal INNER CAS...

Page 5: ... Rack Leveling Screw FREEZER COMPARTMENT Freezer Temperature Control Dial Freezer Lamp Freezer Shelf Twisting Ice Serve Option or General Type Ice Making REFRIGERATOR COMPARTMENT Deodorizer Lamp Refrigerator Temperature Control Dial Chilled Room Shelves Multi Flow Duct Vegetable Drawer Used to keep fruits and vegetables etc fresh and crisp Base Cover ...

Page 6: ...re 9 2 Disconnect the lead wire from the switch 3 3 THERMOSTAT AND CONTROL BOX R 1 Remove the refrigerator shelf 2 Remove the Control Box R by loosening 2 screw fixed to front of Inner Case Figure 10 3 Remove the Control Box R by loosening 2 screws after detaching the cap 4 Pull the Control Box Assy out of Inner Case and separate the thermostat and Control Box R 5 Remove the thermostat by disconne...

Page 7: ...he Tie Wrap and removing the Holder Fuse Figure 14 3 6 LAMP 3 6 1 Freezer room lamp 1 Unplug the power cord from the outlet 2 Remove the room lamp lid by taking down while pulling it forward with your hand after inserting finger into the inside hole as shown in figure 16 3 Remove the lamp by turning it counterclockwise 4 Assemble in reverse order of disassembly Replacement bulb must be the same sp...

Page 8: ... For normal operation of single phase induction motor in the starting operation flows in both main coil and sub coil After the starting is over the current is cut off in subcoil The proper features of PTC play the above all roles So PTC is used as a starting device of motor 4 2 3 PTC Applied Circuit Diagram According to Starting Method of Motor 4 2 4 Motor Restarting and PTC Cooling 1 For restarti...

Page 9: ...cts Motor by cutting off current which flows to Compressor Motor 4 3 2 Role of OLP 1 OLP is attached to Hermetic Compressor used to Refrigerator and Show Case and prevents Motor Coil from being started in the Compressor 2 Do not turn the Adjust Screw of OLP in any way for normal operation of OLP Composition and connection Diagram of OLP 9 5 CIRCUIT DIAGRAM CONTACTING POINT COVER BIMETAL CONTACTING...

Page 10: ...vise the customer to use a regular Trans Replace Compressor OLP works within 30 sec in forcible OLP operation by turning instant power on and off Components start in the voltage of Rating Voltage 10 below Applied voltage isn t in the range of Rating Voltage 10 Check the resistance among M C S C and M S in Motor Compressor Check the resistance of two terminals in PTC Starter Check if applying a reg...

Page 11: ...nother electric components Replace PTC Figure 23 Figure 22 Normal operation of the Defrost Timer is impossible No defrosting Poor cooling Turn the Cam Shaft Shake about 3 times with holding the Cam Shaft and Body softly The resistance is The resistance is 0Ω or variable The resistance is about 220V 50 60Hz 7 30kΩ 120V 50 60Hz 3 5kΩ Loud click sound Replace the Defrost Timer Replace the Defrost Tim...

Page 12: ...e compressor Replace each component Raise the voltage Replace each component Cause Check if current flows to starting devices Check current flowing in sub coil of Compressor Check capacity of OLP The items described above are normal Cooling ability is poor Fan motor doesn t run Much frost are sticked to the EVAPORATOR Poor contacting Coil is shorted Shorted Replace each component Replace each comp...

Page 13: ...or too often and close the set often or check if the door is closed up it firmly Dew forms Check if ambient temperature and humidity Wipe dew with a dry cloth This happening in the Out Case are high is solved in low temperature and humidity naturally Is the gap in the door packing Fill up the gap Abnormal Is the set positioned in a firm and even place Adjust the Leveling Screw and place noise gene...

Page 14: ...re Normal cooling is possible don t get cold formed when injecting Refrigerant at all of regular amount PARTIAL Freeze room and Flowing sound of Refrigerant A little high Normal discharging of CLOG Refrigerator is heard and frost forms more than refrigerant don t get cold in inlet only ambient The capillary tube is faulty normally temperature WHOLE Freezer and Flowing sound of Refrigerant Equal to...

Page 15: ...ge without fail 1 gauge of charging M C vacuum Perform vacuum operation until a proper 1 degree is within 1 Torr vacuum degree is built up 2 If the vacuum degree of the cycle inside is If a proper vacuum degree isn t built up 2 10 Torr below for low pressure and 20 Torr check the leakage from 2 for high pressure it says no vacuum the Cycle Pipe line part and 2 leakage state Quick Coupler Connectin...

Page 16: ... optional parts Optional parts 7 EXPLODED VIEW 16 158C 409B 410J 120A 409C 401A 301A 418A 324A 110A 283B 283D 106A 104A 106A 310A 308A 314A 307A 309A 312A 315A 281C 281B 281A 282A 282B 103C 318A 317A 304A 129A 323B 328A 327A 329C 420A 319A 105A 315B 328B 411A 410G 410B 410A 410C 410H 319C 158A 158B 409A 103A 103B 406B 315C ...

Page 17: ... 136N 136P 149B 149B 136A 136B 149A 332A 125A 241A 241D 241C 235A 205A 205A 131A 131C 233A 231A 230A 244C 244A 203A 200A 201A 212C 212A 131A 125A 125A 131A 125A 125H 149A 330B 405C 404A 405C 405A 329A 140A 125C 210A 210B 231A 201A 212G 243A 243B 212C ...

Page 18: ...P No 3828JD8475D APR 2003 Printed in Korea ...

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