Karcher BD 80/120 W Bp: Shutting Down the Appliance

     

- 

5

Î

Also press the switch for reverse drive 

in addition to the drive switch. 

Î

Open the cover of the fresh water reser-

voir.

Î

Fill fresh water (max. 60 °C) until 15 cm 

below the upper edge of the tank. 

Î

Pour in detergent.

Î

Close the cover of the fresh water res-

ervoir.

몇

Warning

Risk of damage. Only use the recommend-

ed detergents. With respect to different de-

tergents the operator bears the increased 

risk regarding the operational safety and 

danger of accident.

Only use detergents that are free from sol-

vents, hydrochloric acid and hydrofluoric 

acid.

Follow the safety instructions for using de-

tergents.

Note

Do not use highly foaming detergents.

Recommended detergents:

Î

Set the water quantity at the regulation 

knob for water quantity according to the 

dirt level and the type of flooring.

Î

Lower  the lever for lowering the vacu-

um bar downwards; the vacuum bar is 

lowered.

Î

Switch on the suction turbine using the 

vacuuming switch. 

Î

Switch on the brush operations using 

the brush operations switch. 

The brushes will start automatically 

when driven forward; at the same time, 

the detergent solution is led in.

Î

Lower the cleaning head using the 

brush contact pressure switch. 

Î

Press drive switch. 

Î

Adjust the contact pressure using the 

brush contact pressure switch while the 

brushes are turning. 

The contact pressure that has been set 

can be read in the contact pressure dis-

play. 

Note

Carry out initial cleaning attempts with low 

contact pressure.  Slowly increase the con-

tact pressure till the desired cleaning result 

is achieved.  Correctly set contact pressure 

saves power and wear and tear of the 

brushes.

Note

Very dirty floors can be cleaned in two 

rounds.  In the first work step, the detergent 

liquid is applied and brushed in.  The first 

round is carried out with raised vacuum bar 

and the suction turbine being switched off.  

Further, the Aqua-Mizer 

TM 

at the cleaning 

head is also removed.  The surface is 

cleaned normally in the second step after 

the detergent has worked normally.

Î

Lift the cleaning head. 

Î

Turn key to "0" and remove it. 

Î

Open the lock of spray-guard. 

Î

Move both the spray-guard halves to-

wards the sides. 

1 Aqua-Mizer unlocking lever

2 Aqua-Mizer

3 Unlocking lever for sliding brushes

Î

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

Pull the unlocking lever of the Aqua-

Mizer towards the sides and remove the 

Aqua-Mizer downward. 

Î

Re-insert the brush.

Î

Repeat process on the opposite side. 

Î

Replace the spray-guard.

Î

Switch off the brush drive.

Î

Lift the cleaning head. 

Î

Briefly drive forward and suck of the re-

maining water. 

Î

Raise the vacuum bar.

Î

Switch off the suction turbine after 5 

seconds.

Î

Set the key switch at the operator con-

sole to "0" and remove the key. 

Î

Charge battery, if required. 

Caution

Please observe the local provisions regard-

ing the wastewater treatment.

Î

Remove the dirt water drain hose from 

the holder.

Î

Lossen the toggle handle and remove 

the stopper from the hose.

Î

Lower the drain hose into a suitable col-

lector and drain off the dirt water.

Î

Rinse the dirt water tank with clear wa-

ter.

Î

Pull out the upper end of the fresh water 

drain hose from the hose nipple. 

Î

Lower the drain hose into a suitable col-

lector and drain off the fresh water.

In case of danger of frost:

Î

Empty the fresh and dirt water reser-

voirs.

Î

Store the appliance in a frost-protected 

room.



Danger

Risk of injury! When loading or unloading 

the machine, it may only be operated on 

gradients of max. 10%. Drive slowly.

Caution

Risk of injury and damage! Observe the 

weight of the appliance when you transport 

it.

Î

Remove brushes from the brush head.

Î

When transporting in vehicles, secure 

the appliance according to the guide-

lines from slipping and tipping over.

Caution

Risk of injury and damage! Note the weight 

of the appliance in case of storage.

This appliance must only be stored in inte-

rior rooms.



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.

Caution

Risk of damage. Do not wash down the ap-

pliance with water and do not use aggres-

sive detergents.

Before starting working:

Î

Check the inserts of the suction hose 

for leaks. 

Î

Check the brushes for wear, replace if 

required.

Reverse drive

Filling in detergents

Fresh water

Detergent

Application

Detergent

Routine cleaning of all wa-

ter resistant floors

RM 780

RM 746

Routine cleaning of glossy 

surfaces (e.g. granite)

RM 755 es

Routine cleaning and ba-

sic cleaning of industrial 

floors

RM 69 ASF

Routine cleaning and ba-

sic cleaning of fine stone-

ware tiles

RM 753

Routine cleaning of tiles in 

sanitary areas

RM 751

Cleaning and disinfection 

in sanitary areas

RM 732

Removal of coating from 

all alkali-resistant floors 

(e.g. PVC)

RM 752

Removal of coating from li-

noleum floors

RM 754

Cleaning

Removing Aqua-Mizer

Shutting Down the Appliance

Drain off dirt water

Drain off clean water

Frost protection Transport Storage Maintenance and care

Maintenance schedule

Daily

16 EN

     - 

6

Î

Check cables and joints for wear and 

tear and damage. 

Î

Check acid level in wet batteries; refill 

distilled water, if required.

After finishing working:

Î

Drain off dirt water.

Î

Rinse the dirt water tank with clear wa-

ter.

Î

Clean the sieve in the lid of the dirt wa-

ter tank. 

Î

Clean fresh water tank. 

Î

Clean the outside of the appliance with 

a damp cloth which has been soaked in 

mild detergent.

Î

Clean the vacuum lips and the wiping 

lips, check for wear and replace if re-

quired.

Î

Switch on the suction for drying the sys-

tem. 

Î

Do not close the lids of the fresh water 

and dirt water tanks so that the tanks 

can dry up.

Î

Charge battery.

Î

Check spray-guard at the cleaning 

head. 

Î

Clean the seals between dirt water res-

ervoir and cover and check for tight-

ness, replace if required.

Î

Check the setting of the vacuum bar.

Î

Lubricate the drive axle and the steer-

ing rollers. 

Î

Check the vacuum bar for damages. 

Î

Check functioning of the appliance.

Î

Check brush carrier of the device for 

wear. 

Î

Check battery pole for oxidation; brush 

it if required and lubricate it using pole 

grease. Ensure that the connection ca-

ble sits firmly.

Î

Check the acid density of the cells if the 

batteries are not maintenance-free bat-

teries.

Î

Clean vacuum bar elevation.

Î

Clean the joints at the vacuum bar at-

tachment and at the cleaning head.

Î

Check carbon brushes and commuta-

tors of all motors for wear and tear. *

* To be done by Customer Service.

Î

Have the prescribed inspection carried 

out by the customer service.

To ensure a reliable operation of the appli-

ance maintenance contracts can be con-

cluded with the competent Kärcher sales 

office.

Î

Drive the device on a smooth surface.

Î

Lower  the lever for lowering the vacu-

um bar downwards; the vacuum bar is 

lowered.

Î

Drive at least 60 cm forward. 

Î

Stop the device, turn key to "0" and re-

move it.  Ensure that the device does 

not roll backward.

1 Cross-handle for height adjustment

2 Levelling adjustment

-

Î

Align the vacuum bar using the cross-

handles in such a way that the rear vac-

uum lip is bent backward (symmetrical 

to the centre) on both sides of the vac-

uum bar. 

Î

Adjust the levelling in such a way that 

the rear vacuum lip is bent much to-

wards the back across the entire length. 

Î

To check the setting, drive 60 cm for-

ward and check the effect of the new 

setting. 

Î

Adjust the vacuum bar by simultane-

ously turning both the cross-handles in 

such a way that the rear vacuum lip is 

bent almost 9 to 10 mm backward. 

In clock-wise direction: Bend is lesser.

Anti-clockwise direction: Bend be-

comes larger.

Î

To check the setting, drive 60 cm for-

ward and check the effect of the new 

setting. 

Î

Raise the vacuum bar.

Î

Turn key to "0" and remove it. 

Î

Pull out the suction hose from the vacu-

um bar. 

Î

Loosen the cross-handles of the vacu-

um bar fastening and pull out the vacu-

um bar downwards.

Î

Dismantle the vacuum bar.

1 Wing bolt

2 Pressure plate

3 Vacuum lip

Î

Loosen the wing nuts.

Î

Remove the pressure plate.

Î

Take out the vacuum lips.

Note

The vacuum lips can be turned thrice till all 

edges are worn off. After that you need a 

new vacuum lip.

Î

Turn the vacuum lip or replace and in-

sert it back into the vacuum bar and 

align.  

Î

Replace pressure plate.

Î

First tighten the central wing bolt. En-

sure that the pressure plate is lying firm-

ly on the vacuum lip.

Î

Tighten the remaining wing bolts.

Î

Dismantle the vacuum bar.

1 Clamping lock

2 Strap

3 Vacuum lip

Î

Open the clamping lock and remove the 

strap.

Î

Take out the vacuum lips.

Note

The vacuum lips can be turned thrice till all 

edges are worn off. After that you need a 

new vacuum lip.

Î

Turn the vacuum lip or replace and in-

sert it back into the vacuum bar and 

align.  

Î

Insert the strap and close the clamping 

lock.  The tension must just be sufficient 

to hold the vacuum lip without wrinkling.  

Adjust the clamping lock, as required.

Weekly

Monthly

Every 100 operating hours

Yearly

Maintenance Works

Maintenance contract

Setting the Vacuum Bar

Dismantling the vacuum bar

Turn/ replace front vacuum lip

Turn/ replace rear vacuum lip

17 EN