Adjust Safety Valve - Kärcher HDS 7/12 M Service Manual

7.3

Adjust safety valve

74
English 5.906-432.0 Rev. 00 (06/15)
1 Turning handle
 Screw in the twist grip of the pressure and volume reg-
ulation on the pump all the way to the stop (towards
"+").
 Pull off the rotary handle.
1 Adjusting screw
2 Counter-nut
 Loosen counter-nut.
 Completely screw in the adjustment screw.
 Install the stop valve on the high-pressure connection.
 Turning on the appliance.
1 Safety block
2 Safety valve
3 Adjustment screw, safety valve
 Slowly close the stop valve.
 Observe at what pressure water is tripping.
(Nominal value: 20 bar above max. working pressure, see
technical data)
 If the pressure is too high, turn the adjustment screw on
the safety valve to the left (relax the pressure spring).
 If the pressure is too low, turn the adjustment screw on
the safety valve to the right (tension the pressure
spring).
 Seal the adjustment screw.
 Adjust the pressure/ volume regulation.