Troubleshooting - Kärcher B 90 R Handbuch

 Repeat process on the drawbar on the
opposite side.
Install R cleaning head
 Push the pedal for raising/ lowering the
cleaning head down.
 Slide the cleaning head under the appli-
ance so that the hose points toward the
rear.
Only slide the cleaning head halfway
under the appliance.
Figure 19, see cover page
 Unscrew the star handle and remove
the lid.
Figure 20, see cover page
 Connect the power cord of the cleaning
head to the appliance (same colours
must meet).
 Slide the lid in and screw tight.
 Slide the cleaning head halfway under
the appliance.
Figure 16, see cover page
 Connect the hose couplers on the
cleaning head to the hose on the appli-
ance.
Figure 21, see cover page
 Insert the tab into the middle of the
cleaning head, between the fork of the
lever.
 Position the lever on the pedal for rais-
ing/lowering so that the borings in the
lever and the cleaning head align.
 Insert the stop pin through the bushings
and swivel the locking plate downward.
Figure 22, see cover page
 Insert the cylinder pin into the boring of
the drawbar.
 Slide the drawbar with the pin the guide
channel on the cleaning head all the
way to the bottom.
 Insert the locking plate into the guide
channel and lock it in.
 Repeat process on the drawbar on the
opposite side.
Remove D cleaning head
Figure 23, see cover page
 Press in the locking plate and swivel the
drawbar upward.
The subsequent removal will take place in
the opposite order of the installation.
Display Cause
E: Did you press Press emergency-stop button.
the emergency
stop button !?!
E: Pow.module hot Control is overheated
Let cool down!
E: Overload Overload on brush motor
BRUSH
E: Hardw. failure Interference in the integrated
Onboardcharger charger (only Pack model)
E: Failure char- Battery defective
ging battery
20
Remove R cleaning head
The removal will take place in the opposite
order of the installation.
Replacing the brush rollers
 Lift the cleaning head.
Figure 24, see cover page
 Loosen the lock of the wiper flap.
 Swivel the wiping flap out of the way.
Figure 25, see cover page
 Loosen the lock of the wiper flap.
 Push the bearing lid down and remove.
 Pull out the brush roller.
 Insert a new brush roller.
 Reattach the bearing lid and the wiper
flap in reverse sequence.
 Repeat process on the opposite side.
Replacing the Disk Brushes
 Lift the cleaning head.
 Press the pedal for changing the brush-
es downward beyond its resistance.
 Pull the disc brush out of the side below
the cleaning head.
 Hold the new disc brush under the
cleaning head, push upward and lock.
Replace pump hose (only Dose model)
 Unscrew the right stepping platform
and remove along with the drive pedal.
Figure 26, see cover page
1 Covering lid
2 Cover
3 Hose switch
4 Pump hose
5 Rotor
 Remove covering lid.
 Remove cover.
 Remove the hose holder with the pump
hose (turn manually to remove the rotor
manually).
 Replace pump hose.
 Dosing pump and appliance are
brought into operational state by per-
forming the same steps in the reverse
direction.
Frost protection
In case of danger of frost:
Faults with display
Remedy
Release emergency-stop button by turning. Set the main switch to "0". Wait
until display goes off. Set the main switch back to "1".
Turn the key switch to "0". Wait at least 5 minutes to let the control cool off.
Turn the appliance back on.
Set key switch to "0". Wait for 3 seconds. Turn the appliance back on. Reduce
the brush contact pressure.
Disconnect the power cord plug of the charger. Wait for 10 seconds. Plug in
the power cord plug. If the error message appears again: Call customer serv-
ice.
Check battery.
6
-
EN
 Empty the fresh and dirt water reser-
voirs.
 Store the appliance in a frost-protected
room.

Troubleshooting

Danger
Risk of injury! Before carrying out any tasks
on the machine, set the main key to "0" and
remove it. Press emergency-stop button.
Place the appliance on a stable, even sur-
face and disconnect the battery.
 Drain and dispose of the dirt water and
the residual fresh water.
In case of faults that cannot be remedied
using the table below please contact the
customer service.
Replace fuses
Note
Defective pole fuses should only be re-
placed by the service center. If these fuses
are defective, then customer service center
has to check the usage conditions and the
entire control system.
Fault indication
If errors appear on the display, then pro-
ceed as follows:
 Set the key switch to "0" (switch off the
machine).
 Wait till the text on the display has dis-
appeared.
 Set the main switch again to "1" (switch
on the machine). Carry out the trouble-
shooting measures in the given se-
quence only if the fault occurs again. At
such times, always bring the main
switch to the "0" position and ensure
that the emergency-stop button is de-
pressed.
 If the fault cannot be repaired, call cus-
tomer service and mention the error
message.
Note
Error messages that are not listed in the fol-
lowing table, point to errors that cannot be
fixed by the operator. If these are dis-
played, consult Customer Service.