Evacuation Procedures - Hisense ADM-24UX4SGKA Service Manual

4 . R E F R I G E R A N T
4 . R E F R I G E R A N T
4-2. Evacuation procedures£º
Connect the gage manifold valve and the vacuum pump to the service port of the stop valve on
the gas pipe side of the outdoor unit.
Run the vacuum pump for more than 15 minutes and at this time confirm that the pressure gage
indicates -0.1 Mpa (-76 cmHg).
Check the vacuum with the gage manifold valve, then close the gage manifold valve, and stop the
vacuum pump.
Leave it as is for one or two minutes .Make sure the pointer of the gage manifold valve remains
in the same position.
Open
Hexagonal
wrench
Remove the gage manifold valve quickly from the service port of the stop valve.
After refrigerant pipes are connected and evacuated, fully open all stop valves
on gas and liquid pipe sides.
Operating without fully opening lowers the performance and causes trouble.
S Y S T E M K N O W
S Y S T E M K N O W

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 valve on the side of
outdoor unit gas pipe. (The stop valve will
state fresh out of the factory (totally closed with cap on).
Close
Connection
Stop valve
Pipe length
5m maximum
No gas charge is
needed.
Tighten the cap to the service port to obtain the initial status.
L E D G E
L E D G E
not
Stop valve
Gage manifold valve
pipe
Pipe length
exceeding 5m
Charge the prescribed
amount of gas.
Retighten the cap.
Leak test
8
A D M - 2 4 U X 4
A D M - 2 4 U X 4
the
work in its initial
Liquid pipe
Hexagonal wrench
Gas pipe
Caps
Stop valve
Service port
Vacuum pump
S G K A
S G K A