Daikin FTKS20CVMB Service Manual page 221

Outdoor Unit / RK(X)H-C, ARK(X)H-C, R(Y)N-C
Step
Confirm that the
refrigerant is completely
empty in the refrigerant
circuit before starting
work.
Provide a protective
5
sheet or a steel plate
so that the brazing
flame can not influence
the circumstance
around the four way
valve.
6 Heat up the four
portions of brazing
parts (a), (b), (c), (d) on
the four way valve.
Withdraw the pipes by
pliers.
212
Procedure Points
Caution
Be careful about four way
valve, pipes and so on, which
were heated up by a gas
brazing machine, so as not to
get burnt on your hands.
Cautions at the restoration.
1. Restore the piping by non-
oxidation brazing. Braze it
quickly unless nitrogen gas
can be used.
2. It is required to prevent the
carbonization of the oil inside
the four way valve and the
(R4073)
deterioration of the gaskets
affected by heat. For the
sake of this, wrap the four
way valve with wet cloth and
make up water so that the
cloth will not be dried and
avoid excessive heating. (It
keeps below 120°C).
Be careful so as not to break
pipes by pressing the pipes
excessively by pliers when
withdrawing the piping.
(R4074)
SiENBE04-401A
Removal Procedure