LG LS-H0560CL Service Manual page 23

5. Air Purging
1) Air purging
The air which contains moisture remaining in
the refrigeration cycle may cause a malfunc-
tion on the compressor.
1. Remove the caps from the 2-way and 3-way
valves.
2. Remove the service-port cap from the 3-way
valve.
3. To open the valve, turn the valve stem of 2-way
valve counter-clockwise approx. 90° and hold it
there for five seconds, then close it.
4. Check a gas-leakage of the connecting portion
of the pipings.
CAUTION: Do not leak the gas in the air dur-
ing Air puging, with vacumm pump
as possible as you can.
No leakage found
5. To open 2-way valve again, turn the valve stem
counter-clockwise until it stops.
6. To purge the air, push the pin on the service port
of 3-way valve for three seconds with a hexagonal
wrench and set it free for one minute.
7. Set the both liquid and gas side valves to open position with the Hexagonal wrench for the unit operation.
Cover
control
Gas side
To indoor unit
Liquid side
2-way valve
(open)
3-way valve
(Close)
Cap
Hexagonal
wrench
Service port cap
Result
• Re-tighten the connecting portion with torque
wrenches.
leakage ceased
—23—
Terminal block
(pillar terminal)
Cover control
2-way valve
(Open)
3-way valve
(Close)
Hexagonal wrench
Service port cap
leakage found
leakage persists
Repair
leakage persists
Liquid side
Gas side
Cap