Air Purging Of The Piping And Indoor Unit - Panasonic CS-C9BKNG Service Manual

10.3.4. AIR PURGING OF THE PIPING AND INDOOR UNIT

The remaining air in the Refrigeration cycle which contains moisture may cause malfunction on
the compressor.
1. Remove the caps from the 2-way and 3-way valves.
2. Remove the service-port cap from the 3-way valves.
3. To open the valve, turn the valve stem of 2-way valve counter-
clockwise approx. 90° and hold it there for ten seconds, then
close it.
4. Check gas-leakage of the connecting portion of the pipings.
For the left pipings, refer to item 4(A).
5. To open 2-way valve again, turn the valve stem counter-clockwise
until it stops.
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