Hitachi RAS-(4-6)HVRNS2E - Removing Solenoid Valve

10 Servicing
382
SMGB0064 rev.0 - 08/2011
1. Brazing.
2. Reversing valve.
3. Mounting plate.
4. Screw.
5. Compressor.
6. Cover by wet cloth.
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Removing expansion valve
1 Remove the service cover and rear service panel according to the section Removing service cover, see on page 372 and
Removing the lower part of service panel and rear panel, see on page 373.
2 Collect the refrigerant from the check joint according to the section Removing the compressor, see on page 375.
3 Remove the coils according to the section Removing the coils for reversing and solenoid valve (SVA1 SVA2 and SVF),
see on page 380.
4 Remove the brazing as shown in the gure.
• Electronic Expansion Valve (EV0): 2 brazing parts.
• Perform the brazing to remove and reassemble the elec-
tronic expansion valve by cooling with wet cloth.
• Protect the connecting wires and pipe insulation from bra-
zing ame.
1. Expansion valve (EV0).
2. Brazing part.
5 Reassemble the parts in the reverse order of removing proce-
dures.
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Removing solenoid valve
1 Remove the service cover and the rear service panel according to the sections Removing service cover, see on page 372
and Removing the lower part of service panel and rear panel, see on page 373 described in this chapter .
2 Collect the refrigerant from the check joint according to the section Removing the compressor, see on page 375 in this
chapter.
3 Remove the solenoid valve coil according to the section Removing expansion valve, see on page 382 in this chapter.
4 Remove the brazing and are nuts. Using a blowtorch and previously cooling the pipe side with wet cloth in order to
avoid brazing material entering the reversing valve.
5 Perform the brazing to remove and reassemble the solenoid valve.
6 Protect the connecting wires and pipe insulation from the brazing ame.
7 Remove the are nuts with two spanners to avoid twisting.
8 Reassemble the parts in the reverse order of removing order of removing procedures.