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12.3.4 Air Purging of the Piping and Indoor
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.
o For the left piping, refer to item 4 (A).
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