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4. CIRCUIT DIAGRAM

-8-

3. OLP (OVER LOAD PROTECTOR)

1) Definition of OLP

(1) OLP (OVER LOAD PROTECTOR) is attached to the

Hermetic Compressor and protects the Motor by
cutting off current in Compressor Motor in case of
over-rising temperature by Bimetal in the OLP.

(2) When over-voltage flows to Compressor motor, the

Bimetal works by heating the heater inside the OLP,
and the OLP protects Motor by cutting off current
which flows to the Compressor Motor.

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)

CONTACTING:
POINT

COVER

BIMETAL

CONTACTING:
POINT

HEATER

TERMINALS

ADJUST:
SCREW

HEATER

BIMETAL

Figure 1

Содержание GR-154 series

Страница 1: ...REFRIGERATOR SERVICE MANUAL CAUTION BEFORE SERVICING THE UNIT READ THE SAFETY PRECAUTIONS IN THIS MANUAL COLOR SUPER WHITE http biz lgservice com MODEL GR 154 Ref No GR 154 ...

Страница 2: ...o prevent electric shock 4 If you use any kind of appliance check regular current voltage and capacity 5 Don t touch deep frozen products in the freezer with wet hands This may cause frostbite 6 Prevent water from following onto electric elements in the mechanical parts 7 When tilting the set remove any materials on the set especially the thin plates ex Glass shelf or books 8 Leave the disassembly...

Страница 3: ...ace the dryer At any case you must use the LOKRING for connecting or replacing any part in the cycle No Fire No Welding Connect the Schrader valve to pump with the coupler And then turn the pump on for vacuum state Figure 3 Let the pump run until the low pressure gauge indicates the vacuum gauge pressure 0 absolute pressure 1atm or 760mmHg Recommended vacuum time is 30 min Charge the N2 gas in ord...

Страница 4: ... TOTAL 100 DIMENSIONS mm 550 W X 600 D X 850 H NET WHIGHT kg 40 TEMPERATURE CONTROL BUTTON DEFROSTING SYSTEM MANUAL OUT CASE Coated Steel sheet INNER CASE ABS INSULATION CYCLOPENTANE ITEMS SPECIFICATIONS DRAWER 4EA ICE TRAY COMPRESSOR P T C Starting Type CONDENSER Wire Condenser REFRIGERANT R600a 40g LUBRICANT OIL HTS 60 MT 210cc ITEMS SPECIFICATIONS YES ...

Страница 5: ...efitting the door swap the Hinge Cap by pulling it out from its current location and repositioning it on the other side of the door Care should be taken not to damage the adjacent surfaces when removing the Hinge Cap 5 Unscrew the Upper Hinge pin U and screw it into the opposite side hole 6 After refitting the door fix the Lower Hinge L in the opposite side by using 2xBOLTS 7 Fix the Leg 8 Careful...

Страница 6: ...tion of the single 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 3 PTC Applied Circuit Diagram According to Starting Method for the Motor 4 Motor Restarting and PTC Cooling 1 For restarting after power off ...

Страница 7: ... heating the heater inside the OLP and the OLP protects Motor by cutting off current which flows to the Compressor Motor 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 connec...

Страница 8: ...ting voltage 10 Advice the customer to use in the specified range If not 0 or Advice the customer to use in the specified range Measure minimum starting voltage after checking steps 1 3 above Measure the pressure balance of the PTC at the interval of more than 5 min Starts at the voltage of more than 90 Replace OLP Normal Normal Replace the PTC Replace the PTC STARTER The applied voltage is not in...

Страница 9: ... PTC with a multitester or Wheatstone Bridge Observation value is 220 240V 50Hz 33Ω 20 The value is 0 The value is Check another electric components Replace the PTC Normal Abnormal Abnormal Replace the PTC Separate the OLP from the Compressor and check resistance value between two terminals of OLP with Tester Check other electric components Replace OLP ...

Страница 10: ...n 30 min Poor contacting point Shorted or Broken Coil shorted Low voltage Increase the voltage Replace the device Repair the Compressor Shorted Poor contacting point and broken Refrigerant leaks Poor compressing Check the current flowing of starting system Check the components on the main circuit Check if the current flows at the contacting point of the Thermostat Check if the current flows at the...

Страница 11: ...ts connecting the various components or in an eventual hole in the evaporator made by the user If in the refrigerant system a quantity of R600a is introduced which is greater than that indicated the excess gas does not terminate its expansion in the evaporator but proceeds into the return tube The refrigerant system is humid when there is a small percentage of water present which not completely re...

Страница 12: ...eep the drier in a outdoors because ASM 1 after unpacking humidity damages to it 2 Keep the unpacked drier at the temperature of 80 100 C VACUUM 1 When measuring with pirant Vacuum Apply M C Vacuum Gauge without fail 1 gauge the 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 v...

Страница 13: ... 14 ASSEMBLY JAWS BOLT TOOL TUBE LOKRING LOKRING JOINT Figure 15 LOKRING Figure 16 LOKRING TOOL ...

Страница 14: ...501A ...

Страница 15: ...136D ...

Страница 16: ...P NO 3828JD8401A ...

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