Hitachi RAS-(3-6)HVNC1(E) Service Manual page 449

10 Servicing
10.8.12 Removing solenoid valve coil (SVA)
1 Remove the service cover following
ver".
2 Open the P-mounting plate. Check to ensure the LED201 (Red) of
the inverter PCB (PCB2) is OFF.
3 Unplug the connector PCN7 (SVA) on O.U. PCB1.
4 Remove the fixing screw, and remove the solenoid valve coil (SVA)
upward.
5 When reassembling after replacing the solenoid valve coil, perform
the procedure in the reverse way of removing.
N O T E
Fix the wires by plastic bands to the original position.
10.8.13 Removing reversing valve
1 Remove the service cover, the bottom service cover and the rear cover following
"10.8.4 Removing the bottom service cover and rear cover".
2 Remove the reversing valve coil according to "10.8.10 Removing reversing valve coil".
3 Recover the refrigerant from check joints according to "10.8.7 Removing the compressor".
4 Remove the reversing valve assemblies from the fixed positions (4 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 electrical wirings and the piping insulations.
5 Remove reversing valve from the assemblies. (4 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 "10.8.7 Removing the compressor".
7 Reassemble the parts in the reverse order of removing procedures.
435
SMGB0087 rev.0 - 12/2013
"10.8.1 Removing service co-
Brazing part
(to heat exchanger)
Brazing part
(to accumulator)
Reversing valve
Brazing part
(Gas stop valve)
Brazing part
(discharge pipe)
Ebox
A
Solenoid valve coil (SVA)
"10.8.1 Removing service cover"
Detail
Pipe insulation
Brazing part
4 Brazing
parts
and
10