LG GR-K192UF Service Manual page 43

Major repair method for freezing cycle
8-8. Caution for major repair service
8-8-1. Cycle clogged and leaking
When exchanging parts, welding or resealing the refrigerant from the cycle being clogged or leaking, always exchange
the drier to remove the moisture within the cycle.
Cycle clogged and
welding part leaking
8-8-2. 3-Way valve service
Because the 3-way value controls the refrigerant with an internal plastic damper, when repairing or exchanging the
welding part of the valve, the welding heat can be transmitted to the pipe to deform the plastic damper, causing poor
operation. Therefore always service the product in the specified order.
1) Valve welding part service
- For type with a joint pipe in the 3-way valve: When the
refrigerant leaked on the joint pipe (a, b, c part)
connected to the value, you must exchange the 3-way
valve assembly.
(If you have to weld it for a specific reason, cover the
body with a wet towel and minimize the heat
transmission (below 100°C).)
2) Valve exchange service (valve problem)
You must do the service operation in the same method
as above.
3) Other cautions
1. You must insert the capillary tube by 13
welding. (This is to prevent the clogging of the tube
during welding.)
2. Be careful not to drop or apply high impact to the
valve because it can cause damage the internal
injection mold part.
(Damage to the internal part can increase the change
of poor operation and leakage.)
Repair clogged part
Exchange drier
and welding leaking
part
+1
for
-0
Vacuum and seal
refrigerant
(Type with a joint pipe)
Body
Right
compartment
(Type without a join pipe)
Body
Right
compartment
- 43 -
Complete
Drier side
Left compartment
(green)
Drier side
Left compartment
(green)