Kärcher HD 1090 Safety Instructions page 6

GB
2.1 Deaerating the unit
Open the water supply.
To vent the unit, unscrew the nozzle and
leave the unit running until the water exits with
no air bubbles.
Switch off the unit and screw the nozzle back
on.
2.2 Working with the high-pressure
nozzle
Turn the housing of the triple nozzle until the
desired symbol panel corresponds with the
marking (1a).
The spray angle determines the effectiveness
of the high-pressure spray.
Select the pencil or fan jet by switching without
adjusting the nozzle: Turn the spray pipe
which is directed downwards approx. 45º to
the left or the right.
Meanings of the symbols
High-pressure pencil jet (0°)
for especially stubborn dirt.
High-pressure fan jet (25°)
for large areas of dirt.
Low-pressure fan jet (CHEM)
for applications with cleaning agents
or low-pressure cleaning
Always start by directing the high-pressure
spray onto the object which is to be cleaned
from a greater distance in order to prevent
damage caused by excessively high pressure.
Change the type of jet only when the spray gun
is off.
2.3 Adjusting the working pressure and
flow rate
You may infinitely adjust the working pressure
and the flow rate on the Servopress spray
gun. To do this, turn the small adjustment
wheel on the spray gun to the desired position.
At the lowest flow rate the waste heat from the
motor heats the water by approx. 20 °C.
12
2. Operation
2.4 Operation with detergent
Fill the detergent tank.
Set the three-way nozzle to "
Set the detergent metering valve to the desired
concentration.
Metering valve setting
Detergent concentration in %
at maximum flow rate
We recommend that you use detergent
sparingly for the sake of the environment.
Observe the recommended dosage on the
detergent label.
We offer you an individual cleaning and
detergent range, thereby guaranteeing fault-
free work. Please allow us to advise you or
order our catalogue or the detergent
information sheets.
– Active cleaner ........................... RM 31 ASF
– Universal cleaner ....................... RM 55 ASF
– Active wash ............................... RM 81 ASF
Note: Only those detergents which have been
approved by the appliance manufacturer may
be used. Unsuitable detergents can damage
the appliance and the object being cleaned.
We recommend the following cleaning
methods:
Step 1: Loosening dirt
Spray on detergent sparingly and leave for
1–5 minutes.
Step 2: Removing dirt
Spray off the loosened dirt with the high-
pressure spray.
After operating with cleaning agent, you
should set the cleaning agent metering valve
to „0" and flush the unit for approximately
1 minute with the gun open.
".
1 3 5 7
0.5 2.5 5.0 7.0