Outdoor Unit SiENBE12-713
316 Removal Procedure
1.8 Removal of the Four Way Valve
Procedure Warning Be sure to wait 10 minutes or more after turning off all power supplies
before disassembling work.
Step
Procedure Points
" Be sure to apply nitrogen
replacement when
heating up the brazed
part.
Cautions for restoration
1. Restore the piping by non-
oxidation brazing.
In case of you cannot use
the nitrogen gas, restore as
quickly as possible.
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)
" Be careful so as not to break
the pipes by pressing it
excessively by pliers when
withdrawing it.
In case of the difficulty with
gas brazing machine
1. Disconnect the brazed part
where is easy to disconnect
and restore.
2. Cut pipes on the main unit by
a miniature copper tube
cutter in order to make it
easy to disconnect.
Note: Do not use a metal
saw for cutting pipes by all
means because the sawdust
come into the circuit.
1
Loosen the 1 screw to
remove the four way
valve coil.
2
Heat up the 4 brazed
part of the four way
valve. First, disconnect
the part "a".
" Provide a protective
sheet or a steel
plate so that the
brazing flame
cannot influence
peripheries.
3
Disconnect the part "d".
4
Disconnect the part "b"
and "c".
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