Daikin J Series Service Manual page 181

SiBE041012
Step
4 Remove the screw and
remove the four way
valve coil.
Remove the sheets of
5
putty.
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
and withdraw the piping
with pliers.
Removal Procedure
Procedure
Four way valve coil
Points
Caution
Be careful not to get yourself
burnt with the pipes and other
parts that are heated by the
gas brazing machine.
Caution
From the viewpoint of global
environment protection, do
not discharge the refrigerant
gas in the atmosphere. Make
sure to collect all the
refrigerant gas.
In case of difficulty with gas
(R7247)
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.
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. For the
(R7248)
sake of this, wrap the four
way valve with wet cloth and
provide water so that the
cloth does not dry and avoid
excessive heating. (Keep
below 120°C)
Note:
Do not use a metal saw for
cutting pipes by all means
because the sawdust comes
into the circuit.
Provide a protective sheet or
a steel plate so that the
brazing flame cannot
influence peripheries.
(R7249)
Be careful so as not to break
the pipes by pressing it
excessively with pliers when
withdrawing it.
Outdoor Unit
171