66 English 5.906-432.0 Rev. 00 (06/15)1 High pressure outlet, working pressure2 Manometer, working pressure3 Pressure retaining valve (open)4 Pump is running5 Rotary knob6 Overflow valve (closed)7 Reduction bore8 Pressure switch "OFF" (closed)9 Water inlet10 Motor contactors (K1) (closed)11 Pressure switch "ON" (open)NoteThe shown functions of the preessure switches and motorcontactor are for understanding purposes only.In reality, the information from the two pressure switches istransferred directly to the control electronics, which in turncontrols the motor contactor.After switching on the appliance and with the gun open, thecontactor will be actuated and closes the contacts.This will start the motor and the pump will build up theworking pressure.Open the pressure retaining valve and the pressure switch"ON", the overflow valve and the pressure switch "OFF" re-main closed.Due to the closed pressure swtich, the motor contactorsalso remain closed.6.32.2 The appliance is switched on and the gun is open24 Volt61 3 4789115102
