LG LM-4462C2T, Service Manual

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2. Disconnection (on moving)
• Disconnection
(1) Attach the charging hose (manifold gage) to
the service port.
– Connect the manifold gage once to the service
port not stopping. Stopping in the middle of
process may cause the leakage.
(2) Purge the air in hose into special device such
as retrieving tank opening the valve of
charging- hose (gas side) slightly and then
close it tightly.
(3) Operate the air conditioner for 10~15 min until
cycle is stabilized.
(4) Close the spindle of service port (liquid side-
high pressure) and wait till pressure of gas
side (low pressure) drops below 0 kgf/cm
2
.
(5) After the needle of gage indicates below
0 kgf/cm 2 , close the valve of gas side quickly
and turn off the power.
(6) Disconnect the piping between indoor and
outdoor unit and then put on service cap to
the service port.
Lo
Outdoor unit
Indoor unit
Liquid side
Gas side
Closed
Closed
2-Way
valve
3-Way
valve
Retrieving Tank