Hitachi RAS-(2-6)HVNP1(E), Service Manual

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10 Servicing
424
SMGB0087 rev.0 - 12/2013
10.7.14 Removing Electronic expansion valve and Solenoid valve
1
Remove the service cover, the bottom service cover,
the rear cover and the upper cover following
“10.7.1
Removing service cover”
,
“10.7.4 Removing bottom
service cover and rear cover” and “10.7.3 Removing
upper cover” .
2 Recover the refrigerant from check joints according to
“10.7.7 Removing the compressor” .
3 Remove the coils according to “10.7.11 Removing elec-
tronic expansion valve coil” and “10.7.12 Removing so-
lenoid valve coil (SVA)” .
4 Remove the electronic expansion valve coil according
to the item 2.11 “Removing Electronic Expansion Valve
Coil.”
5
Remove the electrical box according to Removing Elec-
trical Box.
6
Remove the brazed parts as shown in the figures.
-
Electronic Expansion Valve (EVO) Brazed Parts: 2
- Solenoid Valve (SVA) Brazed Parts: 2
a. Remove the electronic expansion valve and the so-
lenoid valve with cooling the valve bodies by wet
cloth.
b. Perform the brazing work with attention not to burn
the electrical wirings and the piping insulations.
7 When reassembling after replacing the valves, perform
in the reverse procedure of removing.
N O T E
Run the lead wires to be located to the original position,
and fix them by the plastic band
Electronic
Expansion Valve (EVO)
Solenoid Valve (SVA)
Brazing Part
Brazing Part
10.7.15 Removing electrical components
10.7.15.1 Removing control PCB (PCB1)
1
Remove the service cover following “10.7.1 Removing ser-
vice cover” .
2 Remove all the wiring connected to the control PCB.
3 Remove the 6 holders. Clamp the middle part of the holders
with long-nose pliers and remove it toward front side.
Holder
Printed Circuit Board (PCB1)
Holder
Printed Circuit Board (PCB1)