Hitachi RAS-(3-6)HVNC1(E) Service Manual page 407

10 Servicing
10.5.12 Removing solenoid valve coil (SVA and SVC)
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) and PCN14 (SVC) on O.U.
PCB1. Remove the fixing screw, and remove the solenoid valve
coil (SVA and SVC) upward.
4 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.
10.5.13 Removing reversing valve
1 Remove the service cover, the bottom service cover and the rear cover following
"10.5.4 Removing the bottom service cover and rear cover".
2 Remove the reversing valve coil according to
sing valve coil".
3 Recover the refrigerant from check joints according to
the compressor".
4 Remove the reversing valve assemblies from the fixed positions (5 bra-
zing 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 wi-
rings 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
pressor".
7 Reassemble the parts in the reverse order of removing procedures.
393
SMGB0087 rev.0 - 12/2013
"10.5.1 Removing service co-
"10.5.10 Removing rever-
"10.5.7 Removing
"10.5.7 Removing the com-
Solenoid valve coil screw
Solenoid valve
coil (SVA)
"10.5.1 Removing service cover"
Solenoid valve
coil (SVC)
and
Brazing part
(to heat exchanger)
Brazing part
(to heat exchanger)
Brazing part
(to accumulator)
Reversing valve
Brazing part
(Gas stop valve)
Brazing part
10
(discharge pipe)
Detail
Pipe insulation
Brazing part
4 Brazing
parts