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COMPRESSOR AND ANOTHER ELECTRIC COMPONENTS

1

2

3

4

5

2

4

3

3

4

4

5

5

NO

NO

NO

NO

NO

YES

YES

YES

YES

YES

YES

Power Source

Check the
resistance of the
Compressor Motor.

Check the starting 
state at the regular
voltage above.

Check the
resistance of

the PTC.

Check OLP.

Check the starting
state.

Separate the PTC-STARTER from the
Compressor and measure the voltage
between M and C of the Compressor.

Equal to the applied
voltage. (Rating
voltage ± 10%)

Advice the customer to
use in the specified
range.

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 the range
of Rating Voltage ± 10%.

Test the resistance among 
M-C, S-C, and M-S.

Check if applying a
regular OLP.

Test the resistance of the both
terminals in the PTC-STARTER.

Replace the Compressor.

Starts at the voltage 
of 85% below.

Содержание GC-181SA.CSWQRAN

Страница 1: ...REFRIGERATOR SERVICE MANUAL MODEL GC 181SA CSWQRAN CAUTION BEFORE SERVICING THE UNIT READ THE SAFETY PRECAUTIONS IN THIS MANUAL COLOR SUPER WHITE http biz lgservice com ...

Страница 2: ...set especially thin plate type ex glass plates or books 8 When servicing evaporator part wear cotton gloves to prevent injury by sharp fins of the evaporator 9 Do not open the sealed refrigeration system It could cause injury or pollute the air Leave this job to an autherized servicer with the appropriate refrigerant recovery equipment AIR RECHARGING IN COMPRESSOR Test the refrigeration system by ...

Страница 3: ...linder and must add 165 grams to the group this amount will be reached when R134a has dropped to 585 grams remembering that the indicator shows a lower limit of meniscus Do this after choosing the scale corresponding to the gas pressure different scales reported as the same gas pressure indicated by the pressure gauge on the top of the column To make R134a flow into the system open the valve place...

Страница 4: ...5g LUBRICANT OIL FREOL 15G 210cc EVAPORATOR Door Inside The heart of the refrigerator It evaporates the refrigerant fluid and thereby absorbs heat from the surrounding area ICE CUBE TRAY Door Inside Ice cube is easy to remove from the tray DRIP TRAY Catches the water that drips off the evaporator when defrosting SHELVES MAGNETIC GASKET Tight fitting door seal keeps all the cooling power locked ins...

Страница 5: ... position Adjust the Leveling screw to make sure the appliance is steady and check that the door opens and closes properly Figure 7 B EVA DOOR 1 Open the EVA DOOR and Grasp the Bottom side of the EVA DOOR Hinge 2 Take it out forwards by lifting it slightly up ý Reversible 3 Rotate the EVA DOOR 180 degrees and insert EVA DOOR to opposite side top hole first then in to the Bottom side hole 4 Check t...

Страница 6: ...rator 3 Separate Cover Lamp by twisting up and down Figure 11 4 Loosen 1 screw holding the case to remove the Thermostat Enclosure Figure 12 5 Pull Knob Dial 6 Pull out thermostat in the thermostat cover and disconnect wires Figure 13 NOTE Replace a proper specification new thermostat Figure 13 Figure 10 1 2 Figure 9 Figure 11 Figure 12 C TOP TABLE 1 Unscrew 2 bolts at the rear of top table 2 Hold...

Страница 7: ...on 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 du...

Страница 8: ...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 Moto...

Страница 9: ... in the refrigerant system a quantity of R134a 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 retained by the dehydrator filter enters into circulation with the Freon and freezes at the capilla...

Страница 10: ...acting point Shorted or Broken Coil shorted Low voltage Increase the voltage Replace the device Replace the Compressor Repair the Compressor Repair the Compressor Shorted Poor contacting point and broken Shorted The coil of the Compressor Motor is worn out Refrigerant leaks Poor compressing Check the current flowing of starting system Check the components on the main circuit Check if the current f...

Страница 11: ...ltage Rating voltage 10 Advice the customer to use in the specified range 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 the...

Страница 12: ... PTC with a multitester or Wheatstone Bridge Observation value is 220 240V 50Hz 33Ω 30 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 13: ...5 EXPLODED VIEW 13 411A 310A 309A 308A 307A 312A 315A 127A 104A 314A 283B 410A 410G 323B 106B 107A 281B 302A 302B 107B 282D 282D 318A 317A ...

Страница 14: ... 14 120D 110C 408B 110A 302C 406B 409B 120A 110B 155A 151A 237A 235A 241C 233A 231A 281D 230A 241A 136B 136B 136A 140A 140A 126A 125A 136A EXPLODED VIEW ...

Страница 15: ......

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