Hitachi RAS-(3-6)HVNC1(E) Service Manual page 405

10 Servicing
10.5.8 Removing High pressure switch and pressure switch for control
1 Remove the service cover following "10.5.1 Removing service cover" in this chapter.
2 Collect the refrigerant from the check joint according to "10.5.7 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.
Pressure
sensor for
control
Brazing part
10.5.9 Opening electrical box (P-Mounting Plate)
1 Remove the service cover following "10.5.1 Removing service cover" in this chapter.
2 Remove 6 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.
391
SMGB0087 rev.0 - 12/2013
High
pressure
switch
Brazing
part
Discharge pipe
P view
Suction pipe
Brazing part
Low pressure switch
Power plate
2 fixing
screws
Upper cover
2 fixing
screws
2 fixing
screws
10