English
HDS 798 C
11
MAINTENANCE TASKS
Cleaning strainer in water
connection
Fig. 14
–
Remove strainer
–
Clean in water and re-insert
Cleaning strainer in low water
protection
Fig. 15
–
Unfasten union nut and detach
hose
Fig. 16
–
Take out strainer
If necessary, screw in bolt M8
approx. 5mm to pull out strainer.
–
Clean strainer in water
–
Slide in strainer
–
Mount hose
–
Tighten union nut
Cleaning filter at cleaning-agent
suction hose
Fig. 17
–
Pull out cleaning-agent suction
hose
–
Clean filter in water and re-insert
Changing oil
Fig. 18
–
Provide a collecting container for
approx. 1 litres of oil
–
Place drainage spout in position
–
Loosen starting screw
Fig. 19
KÄRCHER tip
*
Cut open RM 110 bottle and use
as drainage spout
–
Drain off oil via drainage spout into
collector
*
Dispose of used oil in appropriate
manner or hand in at a collection
point.
–
Tighten drain plug again
–
Slowly fill with oil as far as MAX
mark
Air bubbles must be able to escape
Refer to technical data for oil grade
and quantity to be used.
FAULTS
Fault
FUEL indicator lamp on
Fuel tank empty
–
Fill up
READY FOR OPERATION
indicator lamp off
Motor overloaded/overheated
–
Set selector switch to "0" and
allow motor to cool down for at
least 5 min.
–
Have unit checked by After-Sales
Service if this does not remedy
fault.
SCALE INHIBITOR indicator lamp
on
Scale inhibitor reservoir empty; for
technical reasons there is always a
residual quantity in the reservoir.
–
Fill up
Dirt on electrodes in reservoir
–
Clean electrodes
Unit does not run
No mains voltage
–
Check mains connection/power
cord
Unit does not build up pressure
Air in system
–
Bleed pump:
*
Set cleaning-agent metering to "0"
*
With handgun open, use selector
switch to switch unit on and off
several times.
*
With handgun open, open and
close regulator (Fig. 8).
–
Fill up cleaning-agent tank if
empty.
–
Check connections and lines
Pressure set to MIN
–
Set pressure to MAX
Strainer in water connection dirty
–
Clean strainer
Insufficient water supply
–
Check water supply volume (refer
to technical data)
Unit leaking, water dripping out at
bottom
Pump leaking
–
3 droplets/min are permitted.
–
In the event of a major leak, have
unit checked by After-Sales
Service.
Unit constantly switched on and
off with handgun closed
Leak in high-pressure system
–
Check high-pressure system and
connections for leaks
Unit does not draw in cleaning
agent
Filter in cleaning-agent suction hose
dirty
–
Clean filter
