5. To open 2-way valve again, turn the
valve stem counter-clockwise until it
stops.
6. To purge the air, push the pin on the service port
of 3-way valve for three seconds with a hexagonal
wrench and set it free for one minute.
7. Set both liquid and gas side valves to open posi-
tion with the Hexagonal wrench for the unit oper-
ation.
6. Air Purging of the Piping and Indoor Unit
1) Air purging
The air remaining which contains moisture in the
refrigeration cycle may cause a 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
valve.
3. To open the valve, turn the valve stem of 2-way
valve counter-clockwise approx. 90°and hold it
there for five seconds, then close it.
4. Check a gas-leakage of the connecting portion of
the pipings.
CAUTION: Do not leak the gas in the air during
air purging, with vacuum pump as
possible as you can.
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