Daikin SUPER MULTI NX CTXS07JVJU Service Manual page 229

Outdoor Unit: 2MXS18GVJU
Step
 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.
5 Disconnect the brazed
part (a) at discharge side
of the compressor.
6 Disconnect the brazed
part (b) at suction side of
the compressor.
7
Lift the compressor up
and remove it.
Note:
 Do not use a metal saw for
cutting pipes or sawdust will
enter 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 outdoor
heat exchanger fin.
221
Procedure
(a)
Be careful not to get yourself
burnt with pipes and other
parts that are heated by the gas
brazing machine.
If the refrigerant gas leaks
during work, ventilate the
(b)
room. (If the refrigerant gas is
exposed to flames, toxic gas
may be generated.)
Since it may happen that the
refrigerant oil in the
compressor catches fire,
prepare wet cloth so as to
(R2207)
extinguish fire immediately.
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
248°F(120°C). Wrap the four-
way valve with 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.
SiUS12-928_B
Points
Warning
Warning
Warning
Caution
Removal Procedure