22
English 5.906-565.0 Rev. 00 (12/12)
Install a nozzle size 018 (special tool 5.765-092)
on the spray lance.
Install a pressure gauge (special tool) between the
high-pressure connection and the high-pressure
hose.
Set up the power and water supply.
Pull off the rotary handle.
1 Rating nut
2 Set screw
3 Locknut
Screw out the threaded pin.
Loosen the lock nut and turn it all the way down.
Turn on the appliance.
Open the hand spray gun.
Adjust the adjustment nut until the following work-
ing pressure is displayed:
Open and close the hand spray gun 3 times while
the motor is running.
Check the set pressure and readjust if necessary.
Tighten the lock nut without moving the adjust-
ment nut.
Screw in the threaded pin and tighten it.
Reinstall the original power nozzle on the spray
lance.
Completely unscrew the adjustment nut with the
rotary handle (in an anti-clockwise direction).
Turn on the appliance.
Working pressure of approx. 3 MPa (30 bar) is ap-
plied.
Open and close the hand spray gun 3 times while
the motor is running.
Completely screw in the adjustment nut with the
rotary handle (in a clockwise direction).
Seal the adjustment nut and lock nut by means of
locking paint.
Fit the rotary handle.
7.12 Adjusting the overflow valve
HD 6/15-4
16.0...16.4 MPa (160...164 bar)
HD 7/11-4
12.0...12.4 MPa (120...124 bar)
