4
4
.
.
R
R
E
E
F
F
R
R
I
I
G
G
E
E
R
R
A
A
N
N
T
T
F
F
L
L
O
O
W
W
D
D
I
I
A
A
G
G
R
R
A
A
M
M
4-2. Evacuation procedures：
Remove the service port cap of the stop valve on the side of the
outdoor unit gas pipe. (The stop valve will not work in its initial
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.
Pipe length
5m and 7m maximum
No gas charge is
needed.
Pipe length
exceeding 5m and 7m
Charge the prescribed
amount of gas.
Retighten the cap.
Leak test
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