The air which contains moisture and which remains in
the Refrigeration cycle may cause a malfunction on the
compressor.
Remove the caps from the 4-way(liquid side) and
4-way(gas side) valves.
Remove the service-port cap from the 3-way
(gas side) valve.
To open the valve, turn the valve stem of 3-way
(liquid side) valve counter-clockwise approx. 90°
and hold it there for ten seconds, then close it.
Check a gas-leakage of the connecting portion
of the pipings.
To open 3-way(liquid side) valve
again, turn the valve stem counter-
clockwise until it stops.
To purge the air, push the pin on the service port
of 3-way(gas side) valve for three seconds using
with a hexagonal wrench and set it free for one
minute.
• Repeat this three times.
Result
• Re-tighten the connecting portion with
torque wrenches.
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