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Si12-996
Step
4
Heat up the brazed part
and withdraw the piping
with pliers.
Before working, make
sure that the refrigerant is
empty in the circuit.
Be sure to apply nitrogen
replacement when
heating up the brazed
part.
Warning
If refrigerant gas leaks
during the work,
ventilate the room. (If
the refrigerant gas is
exposed to flame,
noxious gas may be
generated.)
5
Remove the 3 nuts.
Removal Procedure
Procedure
Removal of Compressor
Caution
Be careful not to burn
yourself with the pipes and
other parts that are heated by
the gas welding rod.
Caution
From the viewpoint of global
environment protection, do
not discharge the refrigerant
gas in the atmosphere. Make
sure to recover the refrigerant
gas with the recovery system.
(R11172)
Reassembling precautions
1. Use non-oxidizing brazing
method. If nitrogen gas is not
available, braze the parts
quickly.
2. Avoid deterioration of the
gaskets due to carbonization
of oil inside the four way
valve or thermal influence.
For this purpose, wrap the
four way valve with wet
cloth. Splash water over the
cloth against becoming too
hot (keep it below 120°C).
In pulling the pipes, be
careful not to over-tighten
them with pliers. The pipes
may get deformed.
If the gas welding machine fails
to remove the four way valve,
take the steps below.
(R11173)
1. Disconnect the brazed pipe
sections that are easy to
separate and join together
later.
2. With a tube cutter, cut off the
internal pipes to easily take
out the four way valve.
Note:
Never use a metal saw. The
sawdust may come into the
circuit.
Provide a protective sheet or
a steel plate so that the
brazing flame cannot
influence peripheries.
Points
31
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