Kärcher HDS 7/9-4 M/MX Instructions Manual page 31

Safety instructions
Warning
Long hours of using the appliance can
cause circulation problems in the hands on
account of vibrations.
It is not possible to specify a generally valid
operation time, since this depends on sev-
eral factors:
Proneness to blood circulation deficien-
–
cies (cold, numb fingers).
Low ambient temperature. Wear warm
–
gloves to protect hands.
A firm grip impedes blood circulation.
–
Continuous operation is worse than an
–
operation interrupted by pauses.
In case of regular, long-term operation of
the device and in case of repeated occur-
rence of the symptoms (e.g. cold, numb fin-
gers) please consult a physician.
Replace the nozzle
Danger
Switch the appliance off prior to replacing
nozzle and activate hand spray gun until
device is pressureless.
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.
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).
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EN 31