Air purging with vacuum pump
1. Check that each tube(both liquid and gas side tubes) between the indoor
and outdoor units have been properly connected and all wiring for the test
run has been completed. Remove the service valve caps from both the gas
and the liquid side on the outdoor unit, Note that both the liquid and the gas
side service valves on the outdoor unit are kept closed at this stage.
2. When relocate the unit to another place, perform evacuation using vacuum
pump.
3, Pipe length and refrigerant amount:
Caution in handling the packed valve
t. Open the valve stem untie it hits against the stopper. Do not try to open it
further.
2. Securely tighten the valve stem cap with a spanner or the like. Valve stem
cap tightening torque (See Tightening torque table in page 19).
Refrigerant
Outdoorunit Indoorunit
A Gas _
-- _ mL* i
\
Packed valve Half unfon
Valve body
Flare nut
Stopper
/ Cap
Valw stem
@
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