Evacuation (All Amount Of Refrigerant Leaked) - LG General Wall Mounted-Inverter Type Svc Manual

3. Evacuation (All amount of refrigerant leaked)

Vacuum pump
• Procedure
(1) Connect the vacuum pump to the center hose
of charge set center hose
(2) Evacuation for approximately one hour.
– Confirm that the gauge needle has moved
toward 0.8 Torr.
Indoor unit
Lo
OPEN
OPEN
Liquid side
3-Way
valve
Gas side
3-Way
valve
Vacuum
Gage
(3) Close the valve (Lo side) on the charge set,
turn off the vacuum pump, and confirm that
the gauge needle does not move (approxima-
tely 5 minutes after turning off the vacuum
pump).
(4) Disconnect the charge hose from the vacuum
pump.
– Vacuum pump oil.
If the vacuum pump oil becomes dirty or
depleted, replenish as needed.
Part 4 Trouble Shooting
Outdoor unit
Open
Open
Service Manual 37