42
English 5.906-548.0 Rev. 00 (04/12)
1 High pressure outlet (without pressure)
2 Manometer (without pressure)
3 Pressure retaining valve (closed)
4 Pump stands still
5 Rotary knob
6 Overflow valve (closed)
7 Throttle bore
8 Pressure switch "OFF" (closed)
9 Water inlet
10 Motor contactors (K1) (open)
11 Pressure switch "ON" (closed)
Note
The shown functions of the preessure switches and
motor contactor are for understanding purposes only.
In reality, the information from the two pressure
switches is transferred directly to the control electron-
ics, which in turn controls the motor contactor.
When the appliance is switched off and the gun is
open, the pressure is taken from the system and it is
without voltage.
Both pressure switches as well as the overflow valve
and the pressure retaining valve closed.
The motor contactors are open.
5.13 Functional description of pressure switch
5.13.1Appliance is switched off
0 Volt
6
1
3
4
7
8
9
11
5
10
2