34 - Scrub System 63Service Manual – SC250, Scrubtec 334, MA 30
34 - Scrub System
Functional Description
The scrub system is enabled when the machine is
turned on.
The cylindrical brush rotates in the direction of travel
machine.
The rotating scrub system cleans/washes the sur-
face of the oor. The area where brushes suitable for
cleaning the particular type of oor are installed is
the main part of the scrub system.
When the brush is coupled to the drive hub, it is con-
nected to the motor via a toothed belt inside the left-
hand casing.
Brush rotation occurs only when the brush motor
(M1) is driven by the main machine controller after
the machine is started up.
The scrub system uses the solution to wash the oor.
The knob on the right-hand side of the machine body
regulates the pressure of the brush on the ground.
Turning it clockwise increases pressure (+), counter-
clockwise decreases it (-).
A perforated tank, positioned behind the brush, col-
lects small and medium sized debris picked up by the
brush.
In the event of brush motor overload, a safety system
stops the brushes after about 25 seconds of continu-
ous overload.
The overload is detected by the Main machine control-
ler (EB1) by monitoring the current ow to the brush
motor. Operation of the brush motor overload protec-
tion system is indicated by all 6 battery LEDs ash-
ing simultaneously on the main control board.
To start work again after a brush stop due to over-
load, turn the machine off and then on again.
To work properly, the brush motor (M1) needs the fol-
lowing:
• Brush function on
• At least one of the two handlebar sensors acti-
vated
• Sufcient battery charge level: at least one LED
on ashing.
The brush motor (M1) is stopped if it turn for 60 sec-
onds (even if not continuously) during the water sen-
sor (S3) is not sensing the solution presence.
To restore the brush motor turn or to reset the 60 sec-
onds counter, switch off and on the machine.
Drive hub
Brush motor (M1)
Debris collection
tank
Cylindrical brush
Floor brush pressure
adjustment knob
Brush rotation
Direction of travel
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