Technical Features
BR/BD 75/140 R, BR/BD 90/140 R
Page 2 / 71
New Unit Information 03.2004
Drive unit system
– 3-wheel running gear with front wheel steering
and front wheel-hub motor with electro-magne-
tic brake.
– Forwards and reverse drive unit with one drive
pedal, changeover with selector button on the
instrument panel.
– Machine brakes automatically, if the driver
moves away (removes weight) from the seat
(seat contact switch) or if the drive pedal is
released. The brake function takes place with
approx. 1.5 seconds delay.
– When not in operation, an electromagnetic
brake on the wheel-hub motor prevents the
unit from rolling away.
Brush system
– Brush head with two brush rollers or two disc
brushes (two drive motors each).
– Brush rollers rotate from below towards; each
other disc brushes rotate together at the front.
– Coarse dirt pan for coarse dirt picked up at the
brush head (BR version only).
– Brush head contact pressure is adjustable.
– Brushes can be changed without tools.
– Brush head with lateral sealing strips to limit
water distribution.
Water system
– Fresh-water tank in the front of the unit hou-
sing.
– Dirty water tank at the rear with float switch.
– Water feed to brush head with water pump.
– Water flow control with electric metering val-
ve, 10 positions.
– Air bleeder valve for quick bleeding of the wa-
ter hose at the brush head (only BR head).
Vacuum system
– Suction motor (long life) vacuums the dirty
water into the dirty water tank.
– If the dirty water tank is full the electric float
switch switches off the suction motor with a
time delay between 15-20 seconds.
– Suction bar available in a straight or curved
version.
– On switching the suction motor On/Off the
suction bar is lowered/raised. When raised the
suction motor continues running for approx.
10 seconds.
– Rubber strips on the suction bar can be repla-
ced without tools.
– The inclination of the suction bar can be adju-
sted without tools.
Electrics
– The main control printed circuit board is loca-
ted behind the metal cover to the left next to the
footrest.
– The instrument panel printed circuit board is
located underneath the control panel.
Battery
– 24 Volt block battery, 400 Ah, low-maintenance
with filling system.
– Battery monitoring with exhaustive discharge
protection.
Note:
Various things have been changed in the
version of the unit. They are
identified in this document with .
The most important change concerns the
new printed circuit board 2.816-067, which
will be installed as of manufacturing number
10800.
REVISED
REVISED
