Hitachi RAS-(3-6)HVNC1(E) Service Manual page 419

10 Servicing
10.6.8 Removing High pressure switch and pressure switch for control
1 Remove the service cover following "10.6.1 Removing service cover" in this chapter.
2 Collect the refrigerant from the check joint according to "10.6.7 Removing the compressor", in this chapter.
High pressure switch and pressure switch for control
1 Disconnect the Faston Terminals of High Pressure Switch and Pressure sensor for PD control.
2 Remove the high pressure switch and the pressure switch for control from the brazed part of discharge piping.
N O T E
The procedure (1) is not required when removing the pressure sensor for PD control. However, check to ensure that
the connector (CN100) on O.U. PCB1 is disconnected.
Low pressure switch
1 Disconnect the Faston Terminals of Low Pressure Switch.
2 Remove the low pressure switch from the brazed part of suction piping.
Electrical
Box
Brazing part
Pressure sensor for PD control
Discharge pipe
Brazing High pressure
part switch
10.6.9 Opening electrical box (P-Mounting Plate)
1 Remove the service cover following "10.6.1 Removing service cover" in this chapter.
2 Remove 5 screws which fix the electrical box and open the P plate turning counter clockwise approximately 90°.
• Check that the LED201 (red) on the inverter PCB (PCB2) is OFF when opening P-mounting plate.
405
SMGB0087 rev.0 - 12/2013
Upper cover
Rear cover
Suction pipe
Brazing part
Low pressure switch
Power plate
2 fixing
screws
Pressure
High pressure
Brazing part
sensor for
switch
control
Upper cover
1 fixing
screws
2 fixing
screws
Low pressure switch
10