Hitachi RAS-H(V)RNME-AF Service Manual page 298

11 Servicing

Removing expansion valve
Remove the service cover and rear service panel accor-
ding to the section Removing Service Cover
Removing Lower Part of Service Panel and Rear Service
Panel.
Collect the refrigerant from the check joint according to the
section Removing Compressor.
Remove the coils according to the section
tronic Expansion Valve Coil.
Remove the brazing as shown in the figure below.
• Electronic Expansion Valve (EV0): 2 brazing parts.
• Perform the brazing to remove and reassemble the
electronic expansion valve by cooling with wet cloth.
• Protect the connecting wires and pipe insulation from
brazing flame.
Reassemble the parts in the reverse order of removing pro-
cedures.
No.
1 Expansion valve (EV0)
2 Brazing part

Removing solenoid valve
Remove the service cover and the rear service panel according to the sections
lower part of service panel and rear
Collect the refrigerant from the check joint according to the section Removing compressor
Remove the solenoid valve coil according to the section
chapter.
Remove the brazing and flare nuts as shown. Using a blowtorch and previously cooling the pipe side with wet cloth in order
to avoid brazing material entering the reversing valve.
Perform the brazing to remove and reassemble the solenoid valve.
Protect the connecting wires and pipe insulation from the brazing flame.
Remove the flare nuts with two spanners to avoid twisting.
Reassemble the parts in the reverse order of removing procedures.
288
SMGB0070 rev. 1 - 08/2011
and the section
Removing Elec-
Part
panel, described in this chapter.
Removing coils for reversing valve and solenoid valve
1
2
Removing Service Cover and
in this chapter.
Removing
in this