Hitachi RAS-4-HNPE - Opening Electrical Box (P-Mounting Plate); Removing High Pressure Switch and Pressure Switch for Control

10. Servicing
430
SMGB0079 rev.0 - 01/2013
10.4.3.7 Removing High pressure switch and pressure switch for control
1 Remove the service cover following Removing service cover in this chapter.
2 Collect the refrigerant from the check joint according to Removing the compressor, in this chapter.
3 Disconnect the Faston Terminals of High Pressure Switch and Pressure sensor for PD control.
4 Remove the high pressure switch and the pressure switch for control from the brazed part of discharge piping.
Brazing
part
High pressure switch
Pressure sensor
for control
Discharge pipe
Suction pipe
Low pressure switch
Brazing part
Upper cover
Electrical box
Rear box
Brazing part
High pressure switch
Pressure sensor
for control
10.4.3.8 Opening electrical box (P-Mounting Plate)
1 Remove the service cover following Removing service cover in this chapter.
2 Remove 5 screws which x 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.
2 xing
screws
Power plate
Upper cover
2 xing
screws
1 xing
screws
D A N G E R
DONOTtouchelectricalcomponentswhiletheLED201(Red)orLED1(Red)areONtoavoidelectricalshock.Wait
untiltheLEDsturnoff.