Si12-793
Removal of Four Way Valve / Defrost Solenoid Valve
Removal Procedure
15
7. Removal of Four Way Valve / Defrost Solenoid
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 models do
not have a four way valve
coil and a defrost solenoid
valve coil.
Warning
Be careful not to get yourself
burnt 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
From the viewpoint 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
below 120°C.) For the sake
of this, wrap the four way
valve with wet cloth and
provide water so that the
cloth does not dry.
In case of difficulty with gas
brazing machine
1. Disconnect the brazed part
where is easy to disconnect
and restore.
2. Cut pipes on the main unit
with a tube cutter in order to
make it easy to disconnect.
2
Remove the screw and
remove the defrost
solenoid valve coil.
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.
3
Heat the 4 brazed
points of the four way
valve. Disconnect the
point (a) first.
4
5
Disconnect the points
(b) and (c).
Disconnect the point (d)
and remove the four
way valve.
(R10370)
Defrost solenoid
valve coil
Four way
valve coil
(a)
(R2201)
(R2202)
(c)
(d)
(b)