background image

-

9

-

2. RELAY ASSY (PTC AND OLP)

L

N

T

3

2

2

M

C

S

M

C

S

YES

NO

Normal operation of

Compressor is

impossible or poor.

Separate the Relay Assy

from Compressor and

measure the resistance

between M and S with a

Tester or Whistone Bridge.

(Figure 21)

Separate the Relay Assy

from the Compressor and

check the resistance value

between two terminals of

OLP with a Tester. 

Observation value is

220V/50Hz : 22

Ω±

30%

115V/60Hz : 6.8

Ω±

30%

240V/50Hz : 33

Ω±

30%

127, 220V/60Hz :

22

Ω±

30%

The resistance value is 0

or serveral hundreds 

Ω.

The value is ∞.

Check another

electric components.

Replace Relay Assy.

Check another

electric

components.

Replace

Relay Assy.

2

2

 

e

r

u

g

i

F

1

2

 

e

r

u

g

i

F

Содержание GCS165SV

Страница 1: ...CHEST FREEZER SERVICE MANUAL CAUTION BEFORE SERVICING THE UNIT READ THE SAFETY PRECAUTIONS IN THIS MANUAL COLOR PCM Super White MODEL GCS165SV http biz lgservice com ...

Страница 2: ...ent applying parts unplug prior to servicing 3 If testing with power on wear rubber gloves to prevent electric shock 4 Be sure to check regular current voltage and capacity 5 Don t touch metal products in a cold freezer compartment with wet hands It may cause frostbite or other injury 6 Prevent water flowing to electric elements in mechanical parts 7 When tilting the set remove any materials on th...

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: ...ing TEMPERATURE CONTROL Knob Dial DEFROSTING SYSTEM Heater Defrost Heat preservation Cyclopentane REFRIGERANT R134a 90 g ITEMS SPECIFICATIONS Capillary Drier 1 EA LOCK ASSEMBLY 1 EA Manual owners 1EA Card warranty 1EA Key 2EA Cover Glass Manual assembly owners 1EA COMPRESSOR PTC Starting Type EVAPORATOR Fin Tube Type CONDENSER Ref No GCS165SV SPECIFICATIONS ...

Страница 5: ...ponent hold the fixture on the upper part of the temperature control panel to push the temperature control component outwards the case from the compressor cabinet hold and lift upwards the top of the temperature control panel to remove the temperature control component from the case after pushing 2 Removal of the temperature control knob pull the temperature control knob from the temperature contr...

Страница 6: ...mal operation 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 p...

Страница 7: ...sed 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 20 CIRCUIT DIAGRAM CIRCUIT DIAGRAM BN BROWN BL BLUE RD RED BK BLACK G...

Страница 8: ...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 Applied voltage isn t in the range of Rating Voltage 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 regular OLP Measure minimum starting...

Страница 9: ...dge Figure 21 Separate the Relay Assy from the Compressor and check the resistance value between two terminals of OLP with a Tester Observation value is 220V 50Hz 22Ω 30 115V 60Hz 6 8Ω 30 240V 50Hz 33Ω 30 127 220V 60Hz 22Ω 30 The resistance value is 0 or serveral hundreds Ω The value is Check another electric components Replace Relay Assy Check another electric components Replace Relay Assy 2 2 e ...

Страница 10: ... of motor Compressor Replace the 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 Much frost are sticked to the EVAPORATOR Shorted Replace the Heater Sheath Replace each component Check current flowing of the following...

Страница 11: ...culation of cool air Take some food out Over temperat ure in the case Refrigerating fluid leaking Repair in a maintenance point machine set operating continuously Over high ambient temperature and too low temperature of the temperature controller Inspect whether the knob is put on Positions 2 4 or forced cooling Adjust the knob to Positions 2 4 Temperature in the case reached Temperature controlle...

Страница 12: ...LODED VIEW 200A 200B 205B 205A 205A 315A 314A 208B 208B 310B 310B 310B 310B 315B 207A 207B 207C 207D 212A 213A 213B 213C 214A 307A 306B 309A 310A 308A 300A 306D 300B 303A 216A 216B 201A 201B 301B 303D 311C ...

Страница 13: ......

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