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Outdoor Unit: 09/12 Class
SiUS041111
190
Removal Procedure
3.6
Removal of Compressor
Procedure
Warning
Be sure to wait for 10 minutes or more after turning off all power supplies
before disassembling work.
Step
Procedure
Points
1
Remove the four-way
valve, the terminal
cover and disconnect
the terminals of the
compressor so as not to
burn them.
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
Since it may happen that the
refrigerant oil in the compressor
catches fire, prepare a wet cloth
so as to extinguish fire
immediately.
Caution
For 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 and the
deterioration of the gaskets
affected by heat. Keep below
120°C (248°F) by wrapping the
four-way valve with a wet cloth
and provide water 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.
2
Remove the 3 nuts of
the compressor.
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.
3
Heat up the brazed part
of the discharge side
and disconnect.
4
Heat up the brazed part
of the suction side and
disconnect.
5
Lift the compressor up
and remove it.
Note:
Do not use a metal saw for
cutting pipes to prevent
sawdust 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 so as not to
burn the compressor
terminals, the name plate,
the heat exchanger fin.
(R11805)
Discharge side
(R11806)
Suction side
(R11807)
(R11808)
Compressor