Hitachi RAS-(4-6)HVRNS2E - Removing Expansion Valve; Remove Solenoid Valve

10 Servicing
369
SMGB0064 rev.0 - 08/2011
10
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 sections Removing service cover, see on page 361 and
Removing bottom service cover and rear cover, see on page 361.
2 Collect the refrigerant from the check joint according to the section Removing the compressor, see on page 363
3 Remove the coils according to the section Removing reversing valve coil, see on page 367.
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 pro-
cedures.
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Remove solenoid valve
1 Remove the service cover and the rear service panel according to the sections Removing service cover, see on page 361
and Removing bottom service cover and rear cover, see on page 361 described in this chapter .
2 Collect the refrigerant from the check joint according to the section Removing the compressor, see on page 363 in this
chapter.
3 Remove the solenoid valve coil according to the section Removing expansion valve coil, see on page 368 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.