Daikin FTXS09HVJU, Service Manual, Page: 230 / 274

RXS09/12DAVJU, RX09/12FAVJU SiUS04-904
Removal Procedure 219
3 Remove the screw of the
four-way valve coil.
Caution
Be careful not to get burned by
pipes and other parts that are
heated by the gas welding rod.
Caution
For global environmental
protection, do not discharge
the refrigerant gas in the
atmosphere. Make sure to
recover the refrigerant gas with
the recovery system.
Reassembling precautions
1. Use non-oxidizing brazing
method. If nitrogen gas is not
available, braze the parts
speedily.
2. Avoid deterioration of the
gaskets due to carbonization
of oil inside the four-way valve
or thermal influence. For this
purpose, wrap the four-way
valve with a wet cloth. Splash
water over the cloth to keep it
from becoming too hot (keep it
below 248°F (120°C).

In pulling the pipes, be careful
not to over-tighten them with
pliers to avoid deforming the
pipes. .
If the gas welding machine fails to
remove the four-way valve, take
the following steps:
1. Disconnect the brazed pipe
sections that are readily easy
to separate and join them
back together again later.
2. With a small copper tube
cutter, cut off the internal
pipes to easily remove the
four-way valve.
Note:
Never use a metal saw or
sawdust may enter the circuit.
4 Remove the sheets of
putty.
5 Heat up the brazed part
and withdraw the piping
with pliers.

Before working, make sure
that the refrigerant is empty
in the circuit.

Be sure to apply nitrogen
replacement when heating
up the brazed part.
Step Procedure Points
(R7247)
(R7248)
(R7249)