Daikin FTX25JVEA9 Service Manual page 354

Si18-201
Step
2. Disconnecting the 4-way
valve
1 Remove the screw.
2 Get rid of the brazing at
points A, B, C and D.
Disconnect the 4-way
valve assembly.
When cutting with the small
pipe cutter:
1 Place the refrigerant
piping assembly upside
down to prevent
cuttings from coming
into the pipes
Removal Procedure
Procedure
Outdoor Unit
Points
Reassembling precautions
1 Use non-oxidizing brazing
method. If nitrogen gas is not
available, braze the parts
speedily.
2 Avoid deterioration of the
packings due to
carbonization of oil inside the
4-way valve or thermal
influence. For this purpose,
wrap the 4-way valve with
wet cloth. Splash water over
the cloth against becoming
too hot (keep it below
120°C).
"
In pulling the pipes, be
careful not to overtighten
them with pliers. The pipes
may get deformed.
If the gas welding machine fails
to remove the 4-way valve, take
the steps below.
1. Disconnect the brazed pipe
sections that are readily
easy to separate and join
together later.
2. With a small copper tube
cutter, cut off the internal
pipes to easily take out the
4-way valve.
Note:
Never use a hack saw. Cuttings
may come into the pipes.
"
Be careful not to lose or
damage the drip proof cover.
Fit it back into position.
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