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Si00-778
6. Removal of Compressor
Procedure
Step
1. Remove the peripheries.
Remove the four
way valve, the
terminal cover and
the lead wire for
compressor so as
not to burr them.
1
Unscrew the nut of the
compressor.
2. Remove the compressor.
Before working,
make sure that the
refrigerant is empty
in the circuit.
Be sure to apply
nitrogen
replacement when
heating up the
brazed part.
Heat up the brazed part
1
of the discharge side
and disconnect.
2
Heat up the brazed part
of the suction side and
disconnect.
Lift the compressor up
3
and remove it.
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.
Caution
From the viewpoint of
global environment
protection, make sure
to use the vacuum
pump for air purge.
Removal Procedure
Warning Be sure to wait 10 minutes or more after turning off all power supplies
before disassembling work.
Procedure
Discharge side
Ventilate when refrigerant
leaks during the work.
(If refrigerant contacts fire, it
will cause to arise toxic gas.)
Provide a protective sheet or
a steel plate so that the
brazing flame cannot
influence peripheries.
Be careful so as not to burn
(R7421)
the compressor terminals or
the name plate.
Be careful so as not to burn
the heat exchanger fin.
Since it may happen that
refrigeration oil in the
compressor will catch fire,
prepare wet cloth so as to
extinguish fire immediately.
In case of the difficulty with
gas brazing machine
1. Disconnect the brazed part
(R7422)
where is easy to disconnect
and restore.
2. Cut pipes on the main unit by
a miniature copper tube
cutter in order to make it
easy to disconnect.
Cautions for restoration
1. Restore the piping by non-
Suction side
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. For the
(R7423)
sake of this, wrap the four
way valve with wet cloth and
provide water so that the
cloth will not be dried and
avoid excessive heating.
(Keep below 120°C)
Note: Do not use a metal
saw for cutting pipes by all
means because the sawdust
(R7424)
come into the circuit.
Removal of Compressor
Points
Warning
Warning
17
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