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After Installation
Air Purge
Air Purge of the Connecting
Pipes and the Indoor Unit
The air which contains moisture remaining in the
refrigeration cycle may cause a malfunction on the
compressor.
1
Confirm that both the liquid side valve and the
gas side valve are set to the closed position.
2
After connecting the piping, check the joints for
gas leakage with gas leak detector.
3
Remove the service port nut, and connect the
gauge manifold and the vacuum pump to the
service port by the charge hose.
4
Vacuum the indoor unit and the connecting
pipes until the pressure in them lowers to
below 76 cmHg.
5
Remove the valve stem nuts, and fully open the
stems of the 2-way and 3-way valves with a
hexagon wrench.
6
Tighten the valve stem nuts of the 2-way valve
and 3-way valve.
After Installation
7
Disconnect the charge hose and fit the nut to
the service port. (Tightening torque: 1.8 kg.m)
25
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