Daikin ARKH20CVMB7, Service Manual, Page: 224 / 248

SiENBE04-512A Outdoor Unit / RK(X)H-C, ARK(X)H-C, R(Y)N-C
Removal Procedure 215
3.9 Removal of Electronic Expansion Valve
Procedure
Warning Be sure to turn off all power supplies at least 10 min. before
disassembling work.
Step Procedure Points
1. Remove the parts around
the electronic expansion
valve.
Using care not to burn the
electronic expansion valve by
the flame of gas welding
machine, remove the
following parts:
„
Coil of four way valve
„
Putty
Preparation
„
Remove the compressor
sound insulation pad
according to the removal of
compressor sound
insulation pad.
„
When mounting the
electronic expansion valve,
be sure to fasten the hook of
its coil as it was.
Warning
If the refrigerant gas leaks
during work, ventilate the
room. (In case the refrigerant
gas is exposed to fire, it will
cause toxic gas.)
Caution
Be careful not to get burned
by the pipes heated by the
gas welding machine.
Caution
From the point of view of
environmental protection, do
not release the refrigerant
gas to the atmosphere in
repairing the refrigerant
circulating system, but
always collect it with use of a
collecting device.
1 Remove the coil of the
electronic expansion
valve.
2 Remove putty.
2. Remove the electronic
expansion valve.
„
Be careful not to burn the
heat exchanger fin.
„
When mounting the
electronic expansion valve,
be sure to fasten the hooks
of its coil as it was.
„
Before starting the work,
make sure that the
refrigerant gas has been
completely removed out of
the refrigerant circulating
system.
1 Heat the 2 soldered
portions and remove
the electronic
expansion valve (body).
„
When heating the
soldered portion, be sure
to conduct nitrogen
replacement.
Coil of electronic
exp
a n s ion v a lve
(R4569)
P u tty
(R4520)
SiENBE04-512A.book Page 215 Friday, October 5, 2007 1:49 PM