English 5.905-945.0 Rev. 00 (06/15) 21 DANGERPrior to all work on the appliance, switch off the applianceand pull the power plug.Shut off water supply.Drain off water pressure.1 Overflow valve spindle with hexagon2 Counter-nut3 Rating nut4 Spring Connect the test manometer with high-pressure hoseand the trigger gun with servopress rotary regulator tothe high pressure outlet.Insert new high-pressure nozzle. Turn the servopress rotary regulator to the smallestposition and let the device run. Use the adjustment nut to adjust the tension of thespring so that the overflow valve opening pressure isreached (see technical data). Secure the adjustment nut by means of the lock nut. Switch the appliance off and remove all pressure byopening the gun. Connect the test manometer with high-pressure hoseand trigger gun standard to the high-pressure outlet. In-sert new high-pressure nozzle! Open the hand spray gun and let the device run. Use the adjustment nut to adjust the tension of thespring so that the working pressure reaches full load(see technical data). Secure the adjustment nut by means of the lock nut. Switch the appliance off and remove all pressure byopening the gun.NoteThe pressure switch is not adjustable.7 Basic settings and service procedures7.1 Adjusting the overflow valve7.2 Trigger gun with servopress pressure regulator7.3 Trigger gun standard