Removing Reversing Valve - Hitachi RAS-2-HVNP Service Manual

10. Servicing
10.3.4.11 Removing reversing valve
1 Remove the service cover, the bottom service cover and the rear cover following
ving bottom service cover and rear
2 Remove the reversing valve coil according to
3 Recover the refrigerant from check joints according to
4 Remove the reversing valve assemblies from the fixed positions (5 brazing parts and 1 flare connection).
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. (5 brazing parts and 1 flare connection) At this time, perform the brazing
work with cooling the reversing valve body by wet cloth.
6 When reassembling after replacing the reversing valve, 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
7 Reassemble the parts in the reverse order of removing procedures.
Brazing part
(to heat exchanger)
Brazing part
(to accumulator)
385
SMGB0079 rev.0 - 01/2013
cover.

Removing Reversing Valve

Removing
Removing Compressor.
Protect the valve
with wet cloth
Reversing valve
4 Brazing
parts
Brazing part
(to heat exchanger)
Detail
Removing service cover
Coil.
Compressor.
Detail
Flare con-
nection
(SVF)
Brazing part
(discharge pipe)
and Remo-
Brazing part
(Gas stop valve)
10