Si341211
Procedure to Remove Four Way Valve
Removal Procedure
19
6. Procedure to Remove Four Way Valve
Procedure
Warning
Be sure to wait for 10 minutes or more after turning off all power
supplies before disassembling work.
Step
Procedure
Points
Make sure that there is no
refrigerant gas left in the
refrigerant circuit system
before performing the
operation.
Cut off the clamp material
of wire harness.
Precautions on mounting
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Mount it by means of the
non-oxidation brazing
method.
If nitrogen gas is not
available, quickly operate to
mount it.
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It is necessary to prevent the
packing from deterioration
due to the carbonization of oil
or the heat affection within
the four way valve. For this
purpose, avoid the heating of
the valve by wrapping its
body with wet cloth and then
supplying water to the cloth to
keep wet.
(Keeping a temperature of
120
º
C or lower)
Be careful not to crash the
piping by over-pressing it with
a plier when pulling out it.
In case it is difficult to cut off by
a gas welder and remove it,
1. Remove any point of the
piping connections (brazing
portions), which is easy to
remove or mount.
2. Make it easy to remove it by
cutting the piping etc. of the
body with a small copper
pipe cutter.
Note: Never use a metal saw for
sure since cut chips may
be mixed into the piping.
1
2
Remove the coil of four
way valve.
Disconnect the
brazing part of
four way valve
(4 places)
(A, B, C and D).
B
A
C
D
Warning
If refrigerant gas leaks during
operation, ventilate the room.
(The exposure of refrigerant gas
to a fire causes generates toxic
gas.)
Caution
Do not suffer burns due to
contact with piping etc. heated by
a gas welder.
