Karcher BD 80/120 W Bp: Faults

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7

1 Sieve with floater ball

2 Pipe

Î

Clean the sieve from the outside and 

rinse it.

Î

Check the mobility of the floater ball. 

If it is too dirty:

Î

Hold the pipe firmly and pull out the 

sieve from the pipe.

Î

Clean sieve and ball. 

Î

Hold the pipe firmly and reinsert the 

sieve.

Î

Lift the cleaning head. 

Î

Turn key to "0" and remove it. 

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Open the lock of spray-guard. 

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Move both the spray-guard halves to-

wards the sides. 

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Turn the unlocking lever of the sliding 

brush in an anti-clockwise direction - 

the brushes will fall downward and can 

be pulled outward at the bottom of the 

device.

Î

Hold the new brush under the cleaning 

head.

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Turn the unlocking lever of the sliding 

brush in clockwise direction and press 

the brush upward.

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Release the unlocking lever and check 

that the brush is sitting properly.

Î

Repeat process on the opposite side. 

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Replace the spray-guard.

Î

Lubricate the greasing nipple with a 

grease press.



Danger

Risk of injury! Before carrying out any tasks 

on the machine, set the main key to "0" and 

remove it.  Pull out the battery plug.

Î

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. 

Cleaning the floater

Replacing the Disk Brushes

Lubricating the drive axle and the steer-

ing rollers 

Faults

Fault

Remedy

By whom

Appliance cannot be started

Insert the battery plug on the device.

Operator

Release emergency-stop button by turning.

Operator

If battery is low, charge the battery.

Operator

Check battery cable for correct sitting.

Operator

Check battery cable for corrosion; clean, if required.

Operator

Device does not drive or drives 

only slowly

Reset fuse of traction drive

Operator

Drive wheels are not gripping due to high brush contact pressure; reduce the brush con-

tact pressure.

Operator

Control system overheated; switch off device and let it cool down. 

Operator

Insufficient vacuum perform-

ance

Empty the dirt water reservoir.

Operator

Check the setting of the vacuum bar.

Operator

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

if required.

Operator

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

Operator

Check suction hose for blockages; clean if required.

Operator

Check connection between suction hose and vacuum bar and suction hose and the de-

vice.

Operator

Check the suction hose for tightness; replace if required.

Operator

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

Operator

Check the setting of the vacuum bar.

Operator

Clean the floater in the dirt water tank. 

Operator

Reset fuse of suction turbine.

Operator

Insufficient cleaning result

Set/ adjust contact pressure.

Operator

Check the brushes for wear, replace if required.

Operator

Check brushes for wear and tear, clean.

Operator

Check whether the detergent and brushes are suitable for the cleaning task. 

Operator

If battery is low, charge the battery.

Operator

Brushes do not turn

Reset fuse of brush drive.

Operator

Check the brushes for blockage due to foreign particles, remove them if found.

Operator

No or very little detergent solu-

tion gets added

Check level of detergent solution in the fresh water tank; refill, if required.

Operator

Increase detergent dosing.

Operator

Ventilation opening in the lid of the fresh water tank is blocked; clean the opening.

Operator

Check fresh water filter; clean if required.

Operator

18 EN