Working Methods; Pre-Priming - Alto 30CA COMPACT Instruction Manual

4.5 Working methods

Your high pressure washer has been developed for cleaning according to the so-called »2-step method«.
STEP 1
STEP 2
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 out
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, always 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 move
upwards. Thus you will avoid the detergent running off the surface through grooves and dark streaks ap-
pearing 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 is applied.

5.0 Pre-priming

The cleaner is pre-priming and can take water from a tank, a stream or the like. In suction mode the water
inlet hose and the pump should be filled with water prior to starting. The suction height depends on the
water temperature. Max. suction height of 1 m is reached with cold water up to 10°C.
If there is a risk of impurities (i.e. running sands) in the inlet water, an external suction filter should be
mounted beyond the internal filter of the cleaner. Contact your ALTO distributor for further information.
Fields of application and working methods
Application of detergent
High pressure cleaning
GB
11