Daikin FTKS20CVMB(9) Service Manual page 222

SiENBE04-512A
Step
2. Remove the four way
valve.
1 Heat the soldered
portions of the four way
valve and remove the
valve.
2 Loosen the soldered
portions one by one
and pull out the pipes
by means of pliers or
the like.
Removal Procedure
Procedure
Outdoor Unit / RK(X)H-C, ARK(X)H-C, R(Y)N-C
When heating the soldered
portion, be sure to conduct
nitrogen replacement.
Cautions on Mounting
1. Use anti-oxidation solder for
connecting the pipe. If
nitrogen gas can not be
used, solder the pipe
quickly.
2. It is necessary to prevent
the gaskets from
deterioration due to
carbonization of oil in the
four way valve or effect of
heat. Therefore, wrap the
four way valve body with wet
cloth and add water
occasionally so that it should
not get dry and the valve
should not be heated. (Keep
the valve temperature below
120°C.)
When disconnecting the
pipe, use care not to crush it
by pliers with undue force.
If the pipe is hard to disconnect
by means of a gas welding
machine:
1. Disconnect the pipe
connection (soldered
portion) which is easy to
disconnect and reconnect.
2. Cut off the pipe of the valve
body with use of a copper
pipe cutter and disconnect it.
Points
213