LG GR-T622 Service Manual Download Page 17 | Manualshive

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Summary of Contents for GR-T622

Page 1: ...CAUTION BEFORE SERVICING THE UNIT READ THE SAFETY PRECAUTIONS IN THIS MANUAL MODEL GR T622 GR T722 REFRIGERATOR SERVICE MANUAL ...

Page 2: ...e 2 To prevent electric shock unplug before servicing 3 Always check line voltage and amperage 4 If you use any kind of appliance check regular current voltage and capacity 5 Don t touch metal products in the freezer with wet hands This may cause frostbite 6 Prevent water from following onto electric elements in the mechanical parts 7 Close the top door before opening the bottom door Otherwise you...

Page 3: ...is over add the quantity in grams of R 134a to the refrigeration 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 the refilling tube are closed in order to keep the Freon for addi...

Page 4: ...DEFROSTING DEVICE SHEATH HEATER FREEZER 15 W LAMP REFRIGERATOR 40 W ITEMS SPECIFICATIONS DOOR DESIGN Side Round DIMENSIONS mm 750X776X1732 WXDXH NET WEIGHT kg 93 COOLING SYSTEM Fan Cooling TEMPERATURE CONTROL Knob Dial Full Automatic DEFROSTING SYSTEM Heater Defrost With a Timer DOOR FINISH Pre Coated Metal INNER CASE ABS Resin INSULATION Polyurethane Foam ITEMS SPECIFICATIONS VEGETABLE TRAY Trans...

Page 5: ...r passageway is installed to supply cold air to the doorside of the refrigerator compartment Temperature Control Dial Lamp Shelves Snack Corner Crisper Used to keep fruits and vegetables fresh and crisp Freezer Door Bin Refrigerator Door Rack Dairy Corner Can Server Adjustable Door Bin Leveling Screw Inside Base Grille General Type Ice Tray Optional Wine Rack Optional Lamp Optional ...

Page 6: ...ll out the door gasket to remove from the door foam Ass y 3 2 DOOR SWITCH 1 To remove the door switch pull out it with a type driver as shown in figure 9 2 Disconnect the lead wire from the switch 3 3 THERMOSTAT 1 Remove Control Box R by loosening 2 screw fixed to ceiling of Refrigerator compartment Figure 10 2 Separate the thermostat and dial knob F 3 Remove the thermostat by disconnecting the le...

Page 7: ...the room lamp lid by taking down while pushing it backward with your hand after grabbing the hook of lamp lid as shown in the figure at right 3 Remove the lamp by turning it clockwise and replace new one 4 Assemble in reverse order of disassembly Replacement bulb must be the same specification as original Max 15W 3 6 2 Refrigerator room lamp 1 Unplug the power cord from the outlet 2 Remove refrige...

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

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

Page 10: ... 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 Remove the PTC Starter from the Compressor and measure the voltage between Terminal C of Compressor and Terminals 5 or 6 of PTC 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: ...omponents Replace PTC Starter Figure 21 Figure 22 Figure 23 Normal operation of the Defrost Timer is impossible No defrosting Poor cooling Position the Cam Shaft to the point of first click sound and check the current flowing between terminals No 1 brown and No 2 bright orange Next position the Cam Shaft to the point of second click sound and check the current flowing between terminals No 1 brown ...

Page 12: ...e 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 component Replace each component Running is poor...

Page 13: ...t 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 occurrence in the Exterior Case of surroumcling air are high is solved naturally in low temperature and humidity Is there gap in the door packed Fill up the gap Abnormal Are the set positioned in a firm and even place Adjust the Adjust Screw and position noise gene...

Page 14: ...ure Normal cooling is possible don t cool formed when injecting of Refrigerant normally the 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 cool in inlet only ambient The capillary tube is faulty normally temperature WHOLE Freezer room and Flowing sound of Refrigerant Equa...

Page 15: ...ant mixing Do not mix with R 12 refrigerant To remove the moisture from pipe inside Defect refrigerant leak area The opening time should be reduced to a half of the standards during rain and rainy seasons the penetration of water into the pipe is dangerous Refer to repair note in each part R 134a refrigerant is more susceptible to leaks than R 12 and requires more care during welding Do not apply ...

Page 16: ...ors and fuse are optional parts GR T622 GR T722 Option 106A 104A 106A 401A 304A 103C 309A 318A 308A 314A 307A 312A 317A 310A 103A 105A 301A 283B 282B 406B 103B 411A 327A 328A 334B 323B 334A 315B 315A 315B 319A 329C 420A 319C 113D 113B 113C 410G 110A 158A 408A 409B 410C 120B 409B 120C 158C 120A 406A 158B 145B 145A 282H 282E 282C 418A 281A 281B 282J ...

Page 17: ...C 241C 241B 205A 205A 243A 210A 233A 230A 203A 200A 201A 231A 244B 244A 149A 149A 125C 330B 405C 405A 404A 329A 332A 281E 212C 212A 212G 110C 125A 244E 212C 281E 140B 140C 140A 146A 141B 141C 141A 140D 140E 140B 140A 141D 141E 141B 141A 151C 151D Option ...

Page 18: ...P No 3828JD8291A MAY 2000 Printed in Korea ...

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