Removing The High Pressure Switch And Pressure Switch For Control - Hitachi RAS-2-HVNP Service Manual

10. Servicing
10.3.1.8 Removing the 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 Remove the soundproof cover on the compressor.
2 Disconnect the Faston Terminals of High Pressure Switch and Pressure sensor for PD control.
3 Remove the high pressure switch and the pressure switch for control from the brazed part of discharge piping.
N O T E
The procedure (2) 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 Open the P plate turning counter clockwise approximately 90° following
• Check that the LED201 (red) on Inverter is OFF when the P plate is opened.
D A N G E R
DO NOT touch electrical components while the LED201 (Red) is ON to avoid electrical shock. Wait until the
LED turns off.
2 Disconnect the Faston Terminals of Low Pressure Switch.
3 Remove the low pressure switch from the brazed part of suction piping.
Brazing
Brazing
part
Part
Suction pipe Suction Pipe
339
SMGB0079 rev.0 - 01/2013
Removing service cover.
Removing the
Discharge pipe
Discharge Pipe
High pressure
High Pressure Switch
(PSH)
switch
Pressure sensor
Pressure Sensor
for PD Control
for PD control
Low pressure
Low Pressure Switch
switch
(PSL)
Brazing part
Brazing Part
compressor, in this chapter.
Opening electrical box (P
Upper cover
Upper Cover
Electrical Box
Electrical Box
plate).
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