CS-A181KE
1 Evacuation of Installation
When installing an air conditioner, be sure to evacuate the air inside the indoor unit and pipes in the following procedure.
Required tools: hexagonal wrench, adjustable wrench,The air in the indoor unit and in the piping must be
torque wrenches, wrench to hold thepurged. Iair remains in the refrigeration pipings, it willf
joints, gas leak detector, and chargingaffect the compressor, reduce the cooling capacity, and
set.could lead to a malfunction.
(Indoor unit)
(Liquid side)
(Outdoor unit)
3-way valve
Close
(Gas side)
3-way valve
OPEN
Close
Vacuum pump
LoHi
OPEN
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:
(1) Connect a charging hose with a push pin to the(6) Tighten the service port caps of both the 3-way
Low and High sides of a charging set and thevalves at a torque of 18 NYm with a torque wrench.
service ports of a 3-way valves.
(7) Remove the valve caps of both the 3-way valves.
lBe sure to connect the end of the charging hose
Position both of the valves to Oopen� using a
with the push pin to the service port.
hexagonal wrench (4 mm).
(2) Connect the centre hose of the charging set to
a vacuum pump.(8) Mount valve caps onto both of the 3-way valves.
lBe sure to check for gas leakage.
(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
Caution
evacuate the air for approximately 10 minutes.
If gauge needle does not move from 0 cmHg
(4) Close the valve of both the Low and High sides of
(0 MPa) to �76 cmHg (�0.1 MPa) in step (3)
the charging set and turn off the vacuum pump.
above, take the following measures:
Make sure that the needle in the gauge does not
move after approximately 5 minutes.If the leaks stop when the piping connections are
BE SURE TO TAKE THIS PROCEDURE IN ORDERtightened further, continue working from step (3).
TO AVOID REFRIGERANT GAS LEAKAGE.If the leaks do not stop when the connections are
retightened, repair the location of the leak.
(5) Disconnect the charging hose from the vacuum
pump and from the service ports of the
3-way valves.
� 26 �
Untitled-1266/21/00, 10:21 AM
MAC9602008C3 |
ACEC
PANASONIC
