Room Air Conditioner SVC MANUAL(General)

3. Evacuation (All amount of refrigerant leaked)

Part 4 Trouble Shooting

Indoor unit

Liquid side

3-Way valve

Open

Outdoor unit

Gas side

Vacuum pump

OPEN

Lo

OPEN

Vacuum

Gage

3-Way valve

Open

• 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.

(3) Close the valve (Lo side) on the charge set, turn off the vacuum pump, and confirm that the gauge needle does not move (approximately 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.

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