Service Manuals, User Guides, Schematic Diagrams or docs for : LG Air Conditioner LS-J0960NL A30008~4
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2-way, 3-way Valve
2-way Valve (Liquid Side) 3-way Valve (Gas Side)
Valve cap
Hexagonal wrench (4mm) Open position
Flare nut Flare nut Closed position
Open position
Pin
Closed position
To To
piping piping Service Service
connection connection port cap port
To outdoor unit To outdoor unit
Works Shaft position Shaft position Service port
Closed Closed Closed
Shipping
(with valve cap) (with valve cap) (with cap)
Air purging Open Closed Open
1. (Installation) (counter-clockwise) (clockwise) (push-pin or with
vacumm pump)
Open Open Closed
Operation
(with valve cap) (with valve cap) (with cap)
Pumping down Closed Open Open
2. (Transfering) (clockwise) (counter-clockwise) (connected manifold
gauge)
Evacuation Open Open Open
3. (Servicing) (with charging
cylinder)
Gas charging Open Open Open
4. (Servicing) (with charging
cylinder)
Pressure check Open
5. (Servicing) Open Open (with charging cylinder)
Gas releasing Open
6. Open Open (with charging cylinder)
(Servicing)
-40-
1. Air purging
Required tools : hexagonal wrench, adjustable The air in the indoor unit and in the piping must be
wrench, torque wrenches, wrench to purged. If air remains in the refrigeration pipes, it will
hold the joints, and gas leak affect the compressor, reduce to cooling capacity, and
detector. could lead to a malfunction.
The additional gas for air purging has been charged
in the outdoor unit.
However, if the flare connections have not be done
correctly and there gas leaks, a gas cylinder and the
charge set will be needed.
Indoor unit Liquid side
Open Outdoor unit
2-way
valve
Gas side
Clsed
3-way
valve
Service port nut:
Be sure, using a torque wrench to tighten the service port nut (after using the service port), so that it prevents the
gas leakage from the refrigeration cycle.
* CAUTION : Do not leak the gas in the air during Air purging.
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