Loading ...
Loading ...
Loading ...
45
Air Evacuation
Preparations and Precautions
Air and foreign matter in the refrigerant circuit can cause abnormal rises in
pressure, which can damage the air conditioner, reduce its efficiency, and
cause injury. Use a vacuum pump and manifold gauge to evacuate the refrigerant
circuit, removing any non-condensable gas and moisture from the system.
Evacuation should be performed upon initial installation or when the unit is
relocated.
Evacuation Instructions
liquid valve
gas valve
refrigerant charging
vent
nut of refrigerant
charging vent
vacuum pump
Manifold
Gauge
valve cap
Lo Hi
open
close
● Remove the valve caps from the liquid valve and gas valve and remove the nut
of the refrigerant charging vent.
● Connect the charging hose of the manifold gauge to the refrigerant charging
vent of the gas valve and then connect the other charging
hose from the manifold gauge to the vacuum pump.
● Open the manifold gauge completely and operate for 10-15min to check if the
pressure of the manifold gauge remains in -0.1MPa.
Loading ...
Loading ...
Loading ...