2) evacuation – LG LCN240CP User Manual

Page 50

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50 Ceiling Cassette Air Conditioner

(3-way) Valve

(2) Evacuation

(All amount of refrigerant leaked)

• Procedure

1. Confirm that both the liguid side valve and gas

side valve are set to the opened position.

2. Connect the vaccum pump to the center hose of

the manifold gauge.

3. Connect the service port of the gas side valve to

the low side of the gauge.

4. Evacuation for approximately one hour.

- Confirm that the gauge needle has moved

toward-76 cmHg (vacuum of 4 mmHg or less).

5. Close the Low handle of the gauge turn off the

vacuum pump, and confirm that the gauge nee-
dle does not move(approximately 5 minutes
after turning off the vacuum pump).

6. Disconnect the charge hose from the vacuum

pump.

- Vacuum pump oil.

If the vacuum pump oil becomes dirty or deplet-
ed,replenish as needed.

7. Mount the valve caps and the service port caps.

Lo

Open

Open

Vacuum pump

2-Way
valve

Outdoor unit

Liquid side

Indoor unit

Gas side

3-Way
valve

CLOSE

OPEN

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