27
,
,
Ball valve
(liquid side)
Service port
Valve knob Lo
Valve knob Hi
Charge hose
Vacuum
pump
Manifold
valve
Compound gauge Pressure gauge
-1.01
✕
10 Pa
(-760mmHg)
Stop valve
Stop valve
Stop valve
Close
Caps
Gauge manifold valve
Gas pipe
Connection
pipe
Open
Vacuum pump
Service port
Hexagonal
wrench
Liquid pipe
Hexagonal
wrench
<SUH-2.5>
<SUH-1, 1.6, 2>
<SU-1, 1.6, 2, 2.5>
EVACUATION PROCEDURES
Connect the refrigerant pipes (both the liquid and gas
pipes) between the indoor and the outdoor units.
Remove the service port cap of the stop/ball valve.
(The stop/ball valve will not work in its initial state fresh out of the factory (totally closed with cap on).)
Connect the gauge manifold valve and the vacuum pump to the service port of the stop/ball valve .
Run the vacuum pump. (Vacuumize for more than 15 minutes.)
Check the vacuum with the gauge manifold valve, then close the gauge manifold valve, and stop the
vacuum pump.
Leave as it is for one or two minutes. Make sure the pointer of the gauge manifold valve remains in the
same position. Confirm that the pressure gauge show-0.1MPa(-79cmHg)
After refrigerant pipes are connected and evacuated, fully open all stop/ball
valves on gas and liquid pipe sides.
Operating without fully opening lowers the performance and causes trouble.
Pipe length :
7m maximum
No gas charge is
needed.
Pipe length
exceeding 7m
Charge the prescribed
amount of gas.
Remove the gauge manifold valve quickly from the service port of the stop/ball valve.
Tighten the cap to the service port to obtain the initial status.
Retighten the cap.
Leak test
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