Hitachi RAS-(3-6)HVNC1(E) Service Manual page 394

10 Servicing
10.4.12 Removing solenoid valve coil (SVA and SVC)
1 Remove the service cover and the upper cover following
"10.4.1 Removing service cover"
cover".
2 Unplug the connector PCN7 (SVA) and PCN14 (SVC) on O.U.
PCB1.
3 Remove the fixing screw, and remove the solenoid valve coils
(SVA and SVC) upward.
4 When reassembling after replacing the solenoid valve coil, per-
form the procedure in the reverse way of removing.
N O T E
Fix the wires by plastic bands to the original position.
10.4.13 Removing reversing valve
1 Remove the service cover, the bottom service cover, the rear cover
and the upper cover following
"10.4.4 Removing the bottom service cover and rear cover"
"10.4.3 Removing upper cover".
2 Recover the refrigerant from check joints according to
moving the compressor".
3 Remove the reversing valve coil according to
Reversing valve coil".
4 Remove the reversing valve assemblies from the fixed positions
(5 brazing parts).
a. Remove the reversing valve and the stop valve with cooling the
valve bodies by wet cloth.
b. Perform the brazing work with attention not to burn the electri-
cal wirings and the piping insulations.
5 Remove reversing valve from the assemblies. (5 brazing parts) At
this time, perform the brazing work with cooling the reversing valve
body by wet cloth.
6 When reassembling after replacing the reversing valves, perform
in the reverse procedure of removing.
a. Run the lead wires to be located to the original position, and fix
them by the plastic band.
b. Attach the crankcase heater according to
the compressor".
380
SMGB0087 rev.0 - 12/2013
and "10.4.3 Removing upper
"10.4.1 Removing service
"10.4.7 Re-
"10.4.10 Removing
"10.4.7 Removing
Solenoid valve coil screw
Fixing Screws for Solenoid Valve Coil
Solenoid valve coil (SVA)
Solenoid Valve Coil (SVA) (Only for 4 to 7HP)
cover",
and
Solenoid valve coil (SVC)
Solenoid Valve Coil (SVC)
5 brazing
parts