Kärcher HDS Super M Eco Operating Instructions Manual page 17

English
Unit does not build up pressure
— Air in system
Bleed pump:
! Set cleaning agent metering valve
(item 30) to "0"
! Switch the unit switch on and off several
times keeping the handgun open.
! With handgun open, open and close
regulator (Fig. 10).
Venting is accelerated by removing the
high-pressure hose from the high-pressure
connection.
! Fill up cleaning-agent tank if empty.
! Check connections and lines
— Pressure set to MIN
! Set pressure to MAX
— Strainer in water connection is dirty
! Clean strainer
! Clean fine filter, replace it if necessary
— 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
34
Operating Instructions
Unit does not draw in cleaning agent
! Run the unit with an opened cleaning
agent metering valve and a closed water
supply until the float tank is sucked dry
and the pressure drops to "0".
! Now reopen the water inlet.
If the pump still does not suction up
cleaning agent the reasons can be as
follows:
— Filter in cleaning-agent suction hose
dirty
! Clean filter
— Non-return valve gummed up
! Pull the cleaning agent hose off and
detach the non-return valve with a blunt
object, see Figure 17.
Burner not ignited
— Fuel tank empty
! Fill up
— Lack of water
! Check water connection, check supply,
clean low water protection.
— Fuel filter is dirty
! Replace fuel filter.
— Incorrect direction of rotation. If direction
of rotation is correct, powerful jet of air
will be felt at exhaust-gas opening of
burner.
! Check direction of rotation. If necessary,
change round poles of unit plug. See
Fig. 18.
— No ignition spark
! Have unit checked by After-Sales
Service if no ignition spark is visible
through inspection glass during
operation.