Troubleshooting - Kärcher NT 611 MWF Handbuch

Replacing the coarse dirt filter/flat-
fold filter or the exhaust filter
 Open filter door.
 Replace the coarse dirt filter/flat-fold fil-
ter or the exhaust filter.
 Close the filter door, it must lock into
place.
Cleaning the pre-filter
 Release and remove the suction head.
 Remove the cable clip of the disposal
pump.
 Pull the pre-filter over the suction hose
port and remove it.
 Clean pre-filter.
 When inserting the pre-filter, push it
over the suction hose port until it touch-
es the container wall.
 Insert the cable clip of the disposal
pump.
 Insert and lock the suction head.
Cleaning the floater
 Release and remove the suction head.
 Clean the floater with a moist cloth.
 Insert and lock the suction head.

Troubleshooting

DANGER
First pull out the plug from the mains before
carrying out any tasks on the machine.
The suction head cannot be
positioned properly
 Push the pre-filter over the suction hose
port until it touches the container wall.
Protection switch cannot be
switched on
 Have the socket of the power supply
checked by an electrician.
 Connect the mains plug of the appli-
ance to another socket of a different cir-
cuit.
 Inform Customer Service.
18
Protection switch shuts off
repeatedly when the vacuum
cleaner is turned on
 Inform Customer Service.
Suction turbine does not run
 Check the receptacle and the fuse of
the power supply.
 Check the power cable and the power
plug of the device.
 Press the switch on button of the pro-
tection switch.
 Turn on the appliance.
 Check the swimmer.
Suction turbine turns off
 Switch on the disposal pump.
Suction capacity decreases
 Remove obstructions from the suction
nozzle, suction tube, suction hose, or
coarse dirt filter/flat-fold filter.
 Replace the paper or fleece filter bag.
 Ensure the filter cover properly locks
into place.
 Clean or replace the membrane filter
under running water.
 Replace the flat pleated filter.
 Check drain pipe for leaks.
 Empty/clean the pre-filter.
 Check for proper installation of the flat
pleated filter.
 Check the proper installation of the
coarse dirt filter.
Dust escapes during dry vacuuming
 Install the flat fold filter.
 Check for proper installation of the flat
pleated filter.
 Replace the flat pleated filter.
Disposal pump is not running
 Check the socket of the appliance.
 Free the stuck floater switch in the con-
tainer.
 Release the stuck pump impeller in the
pump.
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EN