Replacement Of The Stop Valve (With Check Joint); Replacement Of The High Pressure Switch (Psh); Replacement Of The Pressure Sensor (Pd); Replacement Of The Pressure Sensor (Ps) - Hitachi SAMURAI Series Service Manual

3. Servicing
Cycle components

3.3.8 Replacement of the stop valve (with check joint)

1 Remove the brazed parts using a blowtorch and
previously cooling the pipe side and the stop
valve unit with wet cloth in order to avoid braz-
ing material enter inside the pipes.

3.3.9 Replacement of the high pressure switch (PSH)

1 Disconnect the cables (9 and 10 of the Pressure
switch from the E-box of the compressor termi-
nal board).
2 Remove the screw of the clamp that fixes the
switch.
3 Unscrew the switch and proceed to its replace-
ment
4 When reassembling proceed in reverse order
than removing.

3.3.10 Replacement of the pressure sensor (Pd)

1 Disconnect the cables (4, 5 and 6 of the pres-
sure sensor from the E-box of the compressor
terminal board).
2 Remove the screw of the clamp that fixes the
switch.
3 Unscrew the switch and proceed to its replace-
ment
4 When reassembling proceed in reverse order
than removing.

3.3.11 Replacement of the pressure sensor (Ps)

1 Disconnect the cables (1, 2 and 3 of the Pres-
sure sensor from the E-box of the compressor
terminal board).
2 Unscrew the sensor and proceed to its replace-
ment
3 When reassembling proceed in reverse order
than removing.
73
SMGB0097 rev.0 - 07/2015
Stop valve
Brazed parts
Screw
Screw
High pressure
sensor (Pd)
Pressure sensor
(PS)
Check joint
High pressure
switch (PSH)
Clamp
Clamp
3