Karcher B 90 R Classic Bp Pack дисковая-роликовая: Troubleshooting

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6



Repeat process on the drawbar on the 

opposite side.



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.

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.

The removal will take place in the opposite 

order of the installation.



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. 



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.



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.

In case of danger of frost:



Empty the fresh and dirt water reser-

voirs.



Store the appliance in a frost-protected 

room.



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. 

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.

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.

Install R cleaning head

Remove D cleaning head

Remove R cleaning head

Replacing the brush rollers

Replacing the Disk Brushes

Replace pump hose (only Dose model)

Frost protection

Troubleshooting

Replace fuses

Fault indication

Faults with display

Display

Cause

Remedy

E: Did you press 

the emergency 

stop button !?!

Press emergency-stop button.

Release emergency-stop button by turning. Set the main switch to "0". Wait 

until display goes off. Set the main switch back to "1".

E: Pow.module hot 

Let cool down!  

Control is overheated

Turn the key switch to "0". Wait at least 5 minutes to let the control cool off. 

Turn the appliance back on.

E: Overload      

BRUSH

Overload on brush motor

Set key switch to “0”. Wait for 3 seconds. Turn the appliance back on. Reduce 

the brush contact pressure.

E: Hardw. failure 

Onboardcharger

Interference in the integrated 

charger (only Pack model)

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.

E: Failure char- 

ging battery

Battery defective

Check battery. 

20 EN

     

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7

E: Overload 

TRACTION MO-

TOR

Drive motor has got overheated 

due to a steep climb or locked 

brake. 

Allow machine to cool down at least 15 minutes. Set key switch to “0”. Wait 

for 3 seconds. Turn the appliance back on. Avoid frequent uphill driving.

Seat switch!    

Please sit down!

Seat contact switch has not been 

activated. 

Release the drive pedal. Have a seat.

Release gaspedal

The gas pedal is depressed when 

the main switch is on.

Release drive pedal and reactivate.

Followup suction 

Shutdown shortly

The key switch was turned to "0" 

while the suction turbine was run-

ning.

The suction turbine trails with a delay of 10 seconds. Wait until the appliance 

shuts itself off after 10 seconds.

Dirttank full   

Cleaning stops

Dirt water reservoir is full.

Empty the dirt water reservoir.

Emergency brake 

operation! Drive at 

ground level

Parking brake is defective.

Danger! Do not drive over upward/downward slopes.

Park the machine on an even surface. 

Secure the machine with wheel chock(s) to prevent it from rolling away.

Inform Customer Service.

Display

Cause

Remedy

Faults without display on the console

Fault

Remedy

Appliance cannot be started

Insert battery plug. 

Set main switch to “1”

Safety switch not activated, sit down on the seat.

The machine operates only if the operator is seated on the seat. 

Release emergency-stop button.

Set the key switch to "0". Wait approx. 10 minutes before turning the key switch to "1" again. If possible, 

use the unit only on level surfaces. Check immobilizing brake and foot brake if required.

Take your foot off the accelerator before switching on the main switch.  If the fault recurs, call customer 

service.

Check battery; charge it, if needed

Insufficient water quantity

Check fresh water level, refill tank if necessary.

Check hoses for blockages; clean if required.

R cleaning head: Remove the water distributor strip and clean it.

Clean the fresh water filter.

Insufficient vacuum perform-

ance

Clean the seals between dirt water reservoir and cover and check for tightness, replace if required.

Clean the flat fold filter in the waste water tank

Clean the vacuum lips on the vacuum bar, turn or replace if required

Check suction hose for blockages; clean if required.

Check the suction hose for tightness; replace if required.

Check if the cover on the dirt water discharge hose is closed

Check the setting of the vacuum bar.

Attach additional weight (accessory) to the vacuum bar.

Insufficient cleaning result

Adjust the contact pressure (not with Eco model)

Adjust the wiper flaps (not with Eco model)

Check the brushes for wear, replace if required.

Brushes do not turn

Reduce the contact pressure (not with Eco model)

Check if foreign matters block the brushes; remove foreign matter if required.

Motor overload, allow to cool down. Set the key switch to "0". Wait approx. 10 minutes before turning 

the key switch to "1" again.

Drain hose for dirty water is 

blocked

Open dosing equipment at the drain hose. Pull out the suction hose from suction beam and close it by 

hand. Set the program selection switch to suction or vacuuming. The blockage will be sucked out from 

the drain hose into the dirt water tank.

Detergent metering Dose (on-

ly Dose) does not function 

properly

Inform Customer Service.

21 EN