Operation - Kärcher BR 90 R User Manual And Service Instructions

Slide the four support beams included in
the packaging under the ramp.
Remove the wooden blocks used for ar-
resting the wheels and slide them under
the ramp.
Insert battery plug.
Set main switch to "1".
Press the drive direction switch and
slowly move the machine down from the
ramp.
Set main switch to "0".
Installing the Brushes
BD model
The sweep brushes must be installed be-
fore the initial operation (see "Maintenance
work").
BR model
The brushes are mounted.
Installing the Vacuum Bar
Insert the vacuum bar into the vacuum
bar suspension in such a manner that
the profiled sheet is positioned above
the suspension.
Tighten the cross-handles.
Insert the suction hose.

Operation

Note
Pull the red battery plug to put all functions
out of operation immediately.
Carry out the initial trials in an open surface
so that you familiarise yourself with the ap-
pliance.
Check immobilizing brake
Danger
Danger of accident. The immobilizing brake
must always be checked first on an even
surface before starting the machine.
Take the seating position.
Set main switch to "1".
Select direction of travel.
Gently depress drive pedal.
20
English
The brake must get released and you must
be able to hear it (the control lamp for im-
mobilizing brake on the console switches
off). The machine must roll slightly on a
plane surface. When the pedal is released,
the brake falls in in an audible manner.
Switch off the machine and call the after-
sales service if the above-mentioned
events do not occur.
Brakes
Danger
Danger of accident. If the machine does not
brake, then proceed as follows:
If the machine does not come to a halt
on a ramp with a gradient of 2% when
you release the drive pedal, then pull
the battery plug in the sense of an emer-
gency-stop button for safety reasons
only if the mechanical functioning of the
immobilizing brake has been checked
properly before starting up the machine.
Always pull the battery plug on plane
surfaces below 2% inclination.
Switch off the machine only after it
comes to a complete halt (on an even
surface) and call up the aftersales serv-
ice!
– Further, follow all warning instructions
for braking.
Driving
Danger
Danger of tipping if gradient is too high.
The gradient in the direction of travel
should not exceed 10%.
Danger of tipping when driving round bends
at high speed.
Danger of slipping on wet floors.
Drive slowly when cornering.
Danger of tipping on unstable ground.
Only use the machine on sound surfac-
es.
Danger of tipping with excessive sideways
tilt.
The gradient perpendicular to the direc-
tion of travel should not exceed 10%.
Note
The machine is designed in such a way that
the brush head protrudes on the right. This
helps in working in a proper way even close
to the edges.
Sit on the seat and set main switch to
"1".
Set the drive direction using the drive di-
rection button at the operator console.
Determine the driving speed by press-
ing the drive pedal.
Stop the machine: Release the drive
pedal.
Note
The drive direction can also be changed
during the drive. You can thus clean very
dirty surfaces by driving back and forth a
couple of times.
Overload
In case of overloading, the drive motor au-
tomatically switches off after a certain peri-
od. A fault message is displayed on the
console.
The concerned unit gets switched off if the
controls get overheated.
Allow machine to cool down at least for
15 minutes.
Set main switch to "0".
Wait for a while.
Set main switch to "1".
Filling in detergents
Detergent
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.
Note
Do not use highly foaming detergents.
Recommended detergents:
Application
Routine cleaning of all wa-
ter resistant floors
Routine cleaning of glossy
surfaces (e.g. granite)
Routine cleaning and ba-
sic cleaning of industrial
floors
Routine cleaning and ba-
sic cleaning of fine stone-
ware tiles
Routine cleaning of tiles in
sanitary areas
Cleaning and disinfection
in sanitary areas
Removal of coating from
all alkali-resistant floors
(e.g. PVC)
Removal of coating from li-
noleum floors
Fresh water
Open the cover of the fresh water reser-
voir.
Fill fresh water (max. 60 °C) until 15 cm
below the upper edge of the tank.
Pour in detergent.
Close the cover of the fresh water reser-
voir.
Note
Fill up the fresh water tank completely be-
fore starting up the machine to ventilate the
water supply system.
Detergent
RM 780 RM
746
RM 755 ES
RM 69 ASF
RM 753
RM 751
RM 732
RM 752
RM 754