Karcher HDS 2000 - Manual (Page 9)

HDS 2000 Super
22
GB 5. Operation
5.1 Venting the appliance
•••••
Open the water intake.
•••••
Allow the appliance to run without the high-
pressure hose until the water emerges without
bubbles.
•••••
Then connect the high-pressure hose.
•••••
If the spray lance and high-pressure nozzle
have already been fitted to the high-pressure
hose, you can vent the appliance as follows:
With the hand-held spray gun open, switch
the appliance on and off several times at
intervals of 10 seconds until the water emerges
from the high-pressure hose without bubbles.
5.2 High-pressure nozzle
•••••
The effectiveness of the high-pressure jet
depends to a great extent on the spray angle.
A 25° fan jet nozzle is usually employed
(included in standard delivery).
•••••
Other nozzles are available as accessories.
0° full jet nozzle
for stubborn dirt.
40° fan jet nozzle
for sensitive surfaces.
Dirt blaster
for thick layers of dirt.
Variable angle nozzle
with adjustable spray angle
•••••
At first always direct the high-pressure jet
from a greater distance at the object which is
to be cleaned, thereby preventing damage
from excessive pressure.
5.3 Adjusting the Operating Pressure
and Flow Rate
With the servo pressure valve on the hand spray
gun
– Adjust operating pressure and flow rate
(+/–) by rotating the pressure/flow control
(infinitely variable).
The two pumps are switched in and out via
pressure switches depending on the demand for
water.
5.4 Operating with cold water
•••••
Switch the appliance switch to “ ”.
5.5 Operating with hot water
•••••
Set the thermostat to the desired temperature.
•••••
We recommend the following cleaning
temperatures:
30–50 °C for light dirt
max. 60 °C for dirt which contains protein,
e.g. in the food industry
60–90 °C for cleaning vehicles, machines
•••••
Switch the appliance switch to “ ”.
•••••
If you also increase the operating pressure
and flow rate, you also change the water
temperature.