Scrub System, REV 90Service Manual – SC500
Scrub System, REV
Functional Description
The REV brush system can be operated by the opera-
tor.
The REV brush has a movement with distinctive or-
bital movements and anticlockwise rotation.
The REV allows the surface concerned to be washed/
cleaned by the movement of the brush. The main com-
ponent of the system is the deck where the brush or
the pad suitable for the type of surface to be cleaned
is installed.
The brush deck is xed to the machine with a support
to which the electrical actuator and two anchor levers
are applied.
The electrical actuator (M5) lifts and lowers the deck.
The operating and washing pressure depends on the
weight of the deck. The actuator also permits the ex-
tra pressure function. Extra pressure is selected via
the button on the dashboard.
Brush rotation occurs only when the REV motor (M1)
is driven by the Function Board following activation
of the paddle.
Transmission of motion from the gear motor to the
brush occurs via an eccentric system which provides
the orbital movement.
The system, once activated, uses the solution coming
form the solution system, to wash the oor.
In case of REV motor overload, a safety system stops
the brush to prevent continuous overload.
If the overload takes place when the extra pressure
function is on, the system automatically turns the ex-
tra pressure function off. If the overload persists, the
brush stops.
The overload is detected by monitoring the current
ow sum on the REV motor. If the motor current
reaches the value stored in the parameter “VS1” and
if the overload persists, the REV motor will stop fol-
lowing a delay which varies on the basis of the extent
of the overload.
To start scrubbing again after a brush stop due to
overload, turn the machine off. Then restart the ma-
chine by inserting the ignition key.
In summary, operation of the REV motor (M1) re-
quires the following conditions/inputs:
• Brush function on
• Forward paddle pressed
• Battery level not in critical condition with ash-
ing segments.
Wiring Diagram
M5
J1.4
J1.3
Deck actuator power supply +/-
Deck actuator power supply -/+
BRUSH DECK
ACTUATOR
MOTOR (M5)
M1
BR-
BR+
Brush motor -
Brush motor +
B-
B+
FUNCTION
ELECTRONIC
BOARD (EB1)
BRUSH
MOTOR (M1)
Electronic board power supply +
Electronic board power supply -
Figure 1
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