Karcher B 250 R I Bp - Manual (Page 21)

- 5
 Release the park brake (see "Pushing
the appliance").
 One person must sit on the seat and ac-
tivate the brake pedal during the push-
ing if necessary.
 Push down the appliance through the
ramp from the pallet.
 Re-tighten the screws of the park brake.
The sweep brushes must be installed be-
fore the initial operation (see "Maintenance
work").
The brushes are mounted.
 Insert the vacuum bar into the vacuum
bar suspension in such a manner that
the profiled sheet is positioned above
the suspension.
 Tighten the wing nuts.
 Insert the suction hose.
Note:
Press emergency-stop switch to immedi-
ately switch off all functions of the machine.
ƽ DANGER
Risk of accident. Prior to every operation,
the parking brake must be checked for
proper function on a level ground.

Take the seating position.
 Release emergency-stop button by
turning.
 Set main switch to “1”.
 Select direction of travel.
 Gently depress drive pedal.
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 an audible manner.
Switch off the machine and call the after-
sales service if the above-mentioned
events do not occur.
ƽ DANGER
Risk 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 the
emergency-stop button may be
pressed for safety reasons only if the
mechanical functioning of the immobi-
lizing brake has been checked properly
before commissioning the machine.
Press the brake pedal if the machine
does not brake properly.
 Switch off the machine only after it
comes to a complete halt (on an even
surface) and call up the aftersales ser-
vice!
 Further, follow all warning instructions
for braking.
ƽ DANGER
Danger of tipping if gradient is too high.

The gradient in the direction of travel
should not exceed 15%.
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 15%.
ƽ DANGER
Increased risk of accident on account of tilt-
ing sweeper for B 250 RI models. Be extra
careful while driving reverse and pay atten-
tion to the swiveling movement while steer-
ing the sweeper.
 Move the seat adjustment lever away
from the seat and hold it.
 Then push the seat forwards or back-
wards.
 Release the seat adjustment lever and
lock the seat in place.
 Loosen the wing nut to adjust the steer-
ing wheel.
 Position the steering wheel.
 Tighten the wing nuts.
 Release emergency-stop button by
turning.
 Sit on the seat and set main switch to
“1”.
 Set the drive direction using the drive
direction button at the operator console.
 Determine the driving speed by press-
ing the drive pedal.
 Stop the machine: Release driving ped-
al; press brake, if necessary.
Note:
The direction of travel can also be changed
while driving. This way, even heavily soiled
spots can be cleaned by driving back and
forth several times.
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.
 Turn the key switch to "0", wait for a few
seconds and then turn it to "1".
 Loosen the three hexagonal screws by
key width 7 mm (arrow) by three revolu-
tions each to unlock the emergency
brake.
 Push the appliance.
 Retighten the screw.
ƽ DANGER
Danger of accident by failing brakes.
Retighten the screws immediately after the
sliding process.
ATTENTION
Risk of damage to the suction turbine if op-
erated without flat folded filter.

Prior to operating the appliance, check
the flat folded filter inside the lid of the
waste water tank for its presence, cor-
rect installation and condition.
 Replace damaged flat folded filter.
ATTENTION
Risk of damage. Only use the recommend-
ed detergents. With other detergents, the
operator bears the increased risk regarding
the operational safety and danger of acci-
dent.
Only use detergents that are free from sol-
vents, hydrochloric acid and hydrofluoric
acid.
ṇ CAUTION
Follow the safety instructions for using de-
tergents.
Note:
Do not use highly foaming detergents.
Recommended detergents:
Without battery
Installing the Brushes
BD model
BR model
Installing the Vacuum Bar
Operation
Check immobilizing brake
Driving
Ajdust the seat
Adjusting the steering wheel
Drive the machine
Overload
Pushing the device
Check flat folded filter
Filling in detergents
Detergent
21 EN