SiUS041111 Outdoor Unit: 15/18/24 Class
Removal Procedure 217
4.7 Removal of Four-Way Valve Removal of Four Way Valve
Procedure Warning Be sure to wait for 10 minutes or more after turning off all power supplies
before disassembling work.
Step Procedure Points
1 Remove the screw and
remove the four-way
valve coil.
The cooling only
model has no
four-way valve coil.
Warning
Be careful not to burn yourself
with the pipes and other parts
that are heated by the gas
brazing machine.
Warning
If the refrigerant gas leaks during
work, ventilate the room. If the
refrigerant gas is exposed to
flames, toxic gas may be
generated.
Caution
In consideration of global
environment protection, do not
discharge the refrigerant gas in
the atmosphere. Make sure to
collect all the refrigerant gas.
Cautions for restoration
1. Restore the piping by non-
oxidation brazing.
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. Keep
temperature below 120°C
(248°F).Wrap the four way valve
with wet cloth and provide water
so that the cloth does not dry.
Note:
Do not use a metal saw for
cutting pipes or sawdust will
enter the circuit.
When withdrawing the pipes, be
careful not to pinch them firmly
with pliers to avoid deforming
them.
Provide a protective sheet or a
steel plate so that the brazing
flame cannot influence
peripheries.
Before working, make
sure that the refrigerant
gas is empty in the circuit.
Be sure to apply nitrogen
replacement when heating
up the brazed part.
2 Heat up the brazed
parts of the four-way
valve and disconnect.
Four-way
valve coil
(R14340)
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