Hitachi RAS-(3-6)HVNC1(E) - Page 419

10 Servicing
405
SMGB0087 rev.0 - 12/2013
10
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
Upper cover
High pressure
switch
Pressure sensor for PD control
Brazing part
Rear cover
Brazing
part
Suction pipe
Brazing part
Low pressure switch
Discharge pipe
Brazing part
Low pressure switch
Pressure
sensor for
control
High pressure
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 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