Daikin 3MKS50E3V1B Service Manual page 378

Outdoor Unit: 40-75 Class
Step
4 Remove the putty.
5 Remove the 2 nuts.
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.
6 Heat up the brazed part
of the discharge side
and disconnect the part
(a).
Heat up the brazed part
7
of the suction side and
disconnect the part (b).
8 Remove the
compressor.
Note:
Do not use a metal saw
for cutting pipes by all
means because the
sawdust comes into 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.
366
Procedure
Nut
(a)
Compressor
Points
Warning
Be careful not to get yourself
burnt 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
(R5605)
exposed to flames, toxic gas
may be generated.)
Warning
Since it may happen that the
Putty
refrigerant oil in the
compressor catches fire,
prepare wet cloth so as to
extinguish fire immediately.
Caution
From the viewpoint of global
environment protection, do
(R17172)
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
(b)
carbonization of the oil inside
the four way valve and the
deterioration of the gaskets
(R14070)
affected by heat. (Keep
below 120°C.) For the sake
of this, 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
(R12917)
with a tube cutter in order to
make it easy to disconnect.
SiBE121135
Removal Procedure