Removal Of The Four Way Valve - Daikin ATXS35EV1B7 Service Manual

SiBE04-824
2.2.6

Removal of the Four Way Valve

Procedure
Step
1 Remove the electronic
expansion valve coil.
2 Loosen the screw of the
four way valve coil.
Heat up the brazed part
3
of the four way valve
and disconnect.
Be sure to apply
nitrogen
replacement when
heating up the
brazed part.
Removal Procedure
Warning Be sure to wait 10 minutes or more after turning off all power supplies
before disassembling work.
Procedure
Outdoor Unit
Points
The illustration is for heat
pump models as
representative.
Provide a protective sheet or
a steel plate so that the
brazing flame cannot
influence peripheries.
Be careful so as not to break
the pipes by pressing it
excessively by pliers when
withdrawing it.
Caution
Be careful about the four way
valve, pipes and so on, which
were heated up by a gas
brazing machine, so as not to
get burnt your hands.
Cautions for restoration
1. Restore the piping by non-
oxidation brazing. Braze it
quickly when no nitrogen gas
can be used.
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
sake of this, wrap the four
way valve with wet cloth and
provide water so that the
cloth will not be dried and
avoid excessive heating.
(Keep below 120°C)
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