Gree GKH12K3CI Installation And Operation Manual page 57

2) Connect the tube of
the vacuum watch with the vacuum pump, having
the low-pressure end linking to the inlet for
refrigerant. As shown in figure on right.
3) Starting the vacuum pump, when the indicator turns
to-1 bar, closing the low pressure handle and
stopping vacuum. Keep for 15 minutes, ensuring
the pressure of the vacuum watch remains.
4) Take out the valve cover of the gas valve together
with the liquid valve.
5) Loosing the cord of liquid valve until the pressure rise to 0 bar.
6) Dismantle the tube from the cover of the inlet for refrigerant then, tighten the cover.
7) Loose the valve cord of the gas valve as well as the liquid valve entirely.
8) Tighten the valve cover of the gas valve and liquid valve so as to check whether leakage occurred.
2. Gap Leakage Check
Check if it leaks or not by applying soapsuds on every
joint and then inspect carefully. After the check, wipe
them off completely.
Cover the indoor unit joint with pipe insulation and
four plastic bands to prevent condensing at joints.
10.5.8 Liquid Pipe and Drain Pipe
If the outdoor unit is installed lower than the indoor unit (See Fig.26)
1) A drain pipe should be above ground and
the end of the pipe does not dip into water.
All pipes must be restrained to the wall by
saddles.
2) Taping pipes must be done from bottom to top.
3) All pipes are bound together by tape and
restrained to wall by saddles.
If the outdoor unit is installed higher than the indoor unit (See Fig.27)
1) Taping should be done from lower to the upper part.
2) All pipes are bound and taped together and also should be trapped to prevent water from returning
to the room (See Fig.27)
3) Restraint all pipes to the wall with saddles.
Fig.26
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