SiUS04-924_A Outdoor Unit
180 Removal Procedure
Before working, make
sure that the refrigerant
gas is empty in the circuit.
Be sure to apply nitrogen
replacement when
heating up the brazed
part.
Warning
Be careful not to burn yourself
with the pipes and other parts
that are heated by the gas
brazing machine.
Warning
If the refrigerant gas leaks during
work, ventilate the room. If the
refrigerant gas is exposed to
flames, toxic gas may be
generated.
Warning
Prepare a wet cloth to extinguish
a fire immediately in case the
refrigerant oil in the compressor
happens to ignite.
Caution
For global environment
protection, do not discharge the
refrigerant gas in the
atmosphere. Make sure to collect
all the refrigerant gas.
Cautions for restoration
1. Restore the piping by non-
oxidation brazing.
2. It is required to prevent the
carbonization of the oil inside
the four-way valve to prevent
deterioration of the gaskets
affected by heat. Keep below
120°C/248°F by wrapping the
four-way valve with a wet cloth
and keeping water handy so
that the cloth does not dry.
In case of difficulty with gas
brazing machine
1. Disconnect the brazed part
where is easy to disconnect and
restore.
2. Cut pipes on the main unit with
a tube cutter in order to make it
easy to disconnect.
4
Heat up the brazed part
and withdraw the piping
with pliers.
5 Remove the 3 nuts.
Note:
Never use a metal saw for
cutting pipes to prevent
saw dust from entering
the circuit.
When withdrawing the
pipes, be careful not to
pinch them firmly with
pliers. The pipes may get
deformed.
Provide a protective sheet
or a steel plate so that the
brazing flame cannot
influence peripheries.
Be careful not to burn the
compressor terminals, the
name plate, or the heat
exchanger fin.
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Step Procedure Points
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