Removing High Pressure Switch And Pressure Switch For Control; Opening Electrical Box (P-Mounting Plate) - Hitachi RAS-2-HVNP Service Manual

10. Servicing
10.3.3.8 Removing High pressure switch and pressure switch for control
1 Remove the service cover following
2 Collect the refrigerant from the check joint according to
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 sen-
sor for control
Brazing part
10.3.3.9 Opening electrical box (P-Mounting Plate)
1 Remove the service cover following
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.
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.
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SMGB0079 rev.0 - 01/2013
Removing service cover
Removing the
High pressure
switch
Brazing part
Discharge pipe
P view
Suction pipe
Brazing part
Low pressure switch
Removing service cover
Power plate
2 fixing
screws
in this chapter.
compressor, in this chapter.
in this chapter.
Upper cover
2 fixing
screws
2 fixing
screws
10