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Installation (Cont.)
After Sales Support
1300 886 649 | info@tempo.org
As the air conditioner is filled with the refrigerant R410A, any air and
moisture remaining in the refrigerant system must be discharged with a
vacuum pump. (For method of using a manifold valve, refer to its operation
manual.)
1. Completely tighten the flare nuts A, B, C, D (as illustrated below) and
connect the manifold valve charge hose to a charge port of the low-
pressure valve on the gas pipe side.
2. Connect the charge hose connection to the vacuum pump.
3. Fully open the handle Lo of the manifold valve.
4. Operate the vacuum pump to evacuate. After starting evacuation, slightly
loose the flare nut of the Lo valve on the gas pipe side and check that
the air is entering. (Operation noise of the vacuum pump changes and a
compound meter indicates 0 instead of minus.)
5. After the evacuation is complete, fully close the handle Lo of the manifold
valve and stop the operation of the vacuum pump. Make evacuation
for 15 minutes or more and check that the compound meter indicates
-76cmHg (-1 x 10
5
Pa).
6. Turn the stem
of the packed
valve B about 45°
counterclockwise
for 6~7 seconds
after the gas starts
coming out, then
tighten the flare
nut again. Make
sure the pressure
display in the
pressure indicator
is a little higher than
the atmosphere
pressure.
7. Remove the charge
hose from the Low
pressure charge
hose.
8. Fully open the
packed valve stems
B and A.
9. Securely tighten the cap of the packed valve.
14


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