9.1. Evacuation of Installation
Required tools:
hexagonal wrench, adjustable wrench, torque wrench,
wrench to hold the joints, gas leak detector, charging set
and vaccuum pump
1.
Connect a charging hose with a push pin to the Low
side of a charging set and the service port of the 3-way
valve.
Be sure to connect the end of the charging hose with the
push pin to the service port.
2.
Connect the centre hose of the charging set to a
vacuum pump.
3.
Turn on the power switch of the vacuum pump and
make sure that the needle in the gauge moves from 0
cmHg (0 MPa) to -76 cmHg (-0.1 MPa). Then evacuate
the air for approximately 10 minutes.
4.
Close the valve of the Low side of the charging set and
turn off the vacuum pump. Make sure that the needle in
the gauge does not move after approximately 5
minutes.
BE SURE TO TAKE THIS PROCEDURE IN ORDER TO
AVOID GAS REFRIGERANT LEAKAGE.
5.
Disconnect the charging hose from the vacuum pump
and from the service port of the 3-way valve.
The air in the indoor unit and in the piping must be purged.
If air remains in the refrigeration piping, it will affect the
compressor, reduce to cooling capacity, and could lead to a
malfunction.
6.
Tighten the service port caps of both the 3-way valve
and the 2-way valve and at a torque of 18 N’m with a
torque wrench.
7.
Remove the valve caps of both the 3-way valves.
Position both of the valves to *open* using a hexagonal
wrench (4 mm).
8.
Mount valve caps onto both of the 3-way valve and the
2-way valve.
Be sure to check for gas leakage.
Caution
If gauge needle does not move from 0 cmHg (0MPa) to -76
cmHg (-0.1MPa) in step (3) above, take the following
measures:
If the leaks stop when the piping connections are tightened
further, continue working from step (3).
If the leaks do not stop when the connections are retightened,
repair the location of the leak.
When installing an air conditioner, be sure to evacuate the air inside the indoor unit and pipes in the following procedutre.
Service port cap
Be sure, using a torque wrench to tighten the service port cap (after using the service port), so that it prevents the gas leakage
from the refrigeration cycle.
Procedure:
37
CS-PC9CKV CU-PC9CKV / CS-PC12CKV CU-PC12CKV
Summary of Contents for CU-PC9CKV
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Page 10: ...10 CS PC9CKV CU PC9CKV CS PC12CKV CU PC12CKV...
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Page 13: ...5 Block Diagram 5 1 CS CU PC9CKV CS CU PC12CKV 13 CS PC9CKV CU PC9CKV CS PC12CKV CU PC12CKV...
Page 14: ...6 Wiring Diagram 6 1 CS CU PC9CKV CS CU PC12CKV 14 CS PC9CKV CU PC9CKV CS PC12CKV CU PC12CKV...
Page 18: ...Time Graph for soft dry operation 18 CS PC9CKV CU PC9CKV CS PC12CKV CU PC12CKV...
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Page 50: ...Q Q Q Q Cooling characteristics 50 CS PC9CKV CU PC9CKV CS PC12CKV CU PC12CKV...
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Page 61: ...How to use electronic circuit diagram TIMER TABLE 61 CS PC9CKV CU PC9CKV CS PC12CKV CU PC12CKV...
Page 63: ...CS PC9CKV CS PC12CKV 63 CS PC9CKV CU PC9CKV CS PC12CKV CU PC12CKV Printed in China...
