Operating Modes; Turning On The Appliance - Kärcher HDS 7/9-4 M Handbuch

Replace the nozzle
DANGER
Risk of injury! Switch the appliance off prior
to replacing nozzle and activate hand spray
gun until device is pressureless.
 Secure the trigger gun. To do so, push
the safety catch towards the front.
 Replacing the nozzle.

Operating modes

0/OFF = Off
1 Operating with cold water
2 Eco operation (hot water max. 60 °C)
3 Operating with hot water/steam

Turning on the Appliance

 Set appliance switch to desired operat-
ing mode.
Indicator lamp for operational readiness
lights up.
The device starts briefly and turns off, as
soon as the working pressure is reached.
Note: If the indicator lamps for pump, rota-
tion direction, burner malfunction or engine
are on during operation, turn off the appli-
ance immediately and repair malfunction,
refer to "Help with malfunctions".
 Release the trigger gun. To do so, push
the safety catch towards the back.
When activating the hand spray gun the de-
vice switches back on.
Note: If no water comes out of the high
pressure nozzle, vent pump. Refer to "Help
with malfunctions - appliance is not building
up pressure".
Adjust cleaning temperature
 Set temperature regulator to desired
temperature.
30 °C to 98 °C
– Clean with hot water.
100 °C to 150 °C
– Clean using steam.
 Replace the high-pressure nozzle
(stainless steel) with steam nozzle
(brass), (refer to "Using steam").
Set working pressure and flow rate
Pressure/quantity regulation of the
pump unit
 Turn the regulation spindle in a clock-
wise direction: Increase working pres-
sure (MAX).
 Turn the regulation spindle in an anti-
clockwise direction: Reduce working
pressure (MIN).
Pressure/ quantity regulation at the
hand spray gun
 Set thermostat to max. 98 °C.
 Set the working pressure/quantity regu-
lation at the pump unit to maximum
quantity.
 Set the working pressure and feed
quantity by turning (steplessly) the
pressure/quantity regulation mecha-
nism at the hand spray gun (+/-).
DANGER
Risk of injury! When adjusting the pressure/
quantity regulation, make sure that the
screw connection of the spray lance does
not become loose.
Note: For long term work with low pres-
sure, set pressure at the pressure/quantity
regulation of the pump unit.
Operation with detergent
– For considerate treatment of the envi-
ronment use detergent economically.
– The detergent must be suitable for the
surface to be cleaned.
– 7
EN 31