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

10. Servicing
10.4.1.13 Removing reversing valve
1 Remove the service cover, the bottom service cover, the rear cover and the upper cover following
cover, Removing bottom service cover and rear cover
2 Remove the reversing valve coil according to
3 Remove the electrical box according to
4 Remove the electronic expansion valve coil according to
5 Recover the refrigerant from check joints according to
6 Remove the high pressure switch wiring.
7 Remove the valve stay.
8 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.
9 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.
10 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
Brazing part
(discharge pipe)
Detail
Brazing part
(Gas stop valve)
404
SMGB0079 rev.0 - 01/2013
and Removing upper

Removing Reversing Valve

Removing Electrical
Removing Electronic Expansion Valve
Removing
Removing Compressor.
Reversing valve
Brazing part
(to heat exchanger)
Brazing part
(to accumulator)
cover.
Coil.
Box.
Compressor.
Removing service
Coil.
4 brazing parts