11
Fields of application and working methods
GB
Adjustment of max. dosage:
1. Turn knob to step 0 (on a level with hose socket).
2. Dismount cover by pressing a flat screwdriver (approx. 3 mm) down into one of the two
grooves, upon which the cover can be tipped off.
3. Unscrew the screw by Parker’s screwdriver.
4. Remove knob.
5. Lift up lock washer and turn it until the required max. dosage is now on a level with the arrow.
6. Remount the knob - still adjusted to step 0.
7. Screw in the screw until you feel a slight resistance.
8. Press home the cover over the knob.
Change from application of detergent under low pressure to cleaning under high pressure is simply ef-
fected by regulating from »low pressure mode« to »high pressure mode« on the spray lance. You will not
have to mount or dismount any parts by normal use of detergent.
For foam cleaning you will have to mount the special foam injector between the high pressure washer and
the high pressure hose. Insert the suction hose of the injector into the foam detergent. Mount foam lance
on spray handle and now you are ready for foam application. Upon the application dismount the foam
injector and replace the foam lance by a spray lance and you are ready for cleaning.
4.5 Working methods
Your high pressure washer has been developed for cleaning according to the so-called »2-step method«.
STEP 1
Application of detergent
STEP 2
High pressure cleaning
In practice the working process is laid down in accordance with the actual job, but as a starting point the
following working method can be described for a job:
1. Apply detergent under low pressure. The dosage is chosen according to the job, which is to be carried
through, and the adjustment is made on the dosing unit.
2. Await acting time. Let the detergent act on the dirt/surface for a short time prior to pressure cleaning
- usually a few minutes.
3. High pressure cleaning. Clean all surfaces under high pressure.
4. Rinse afterwards, if necessary. To make sure that residual impurities are removed from the surface.
In connection with the working process the optimum cleaning will be reached by following these 3 pieces
of advice:
Advice no. 1
When using a detergent, usually alway apply it on a dry surface. If the surface is rinsed with water at first, it
may be difficult for it to absorb the detergent, and the result is a reduced effect of the detergent.
Advice no. 2
When applying a detergent on large vertical surfaces (i.e. the sides of a truck) work from below and up-
wards. Thus you will avoid the detergent running off the surface through grooves and dark streaks appear-
ing on the surface whilst cleaning.
Advice no. 3
During the high pressure cleaning you should work so that the high pressure water does not run over the
surface which has not been cleaned yet. This is to ensure that there is sufficient detergent on the surface
when the high pressure water hits the surface.
