189Service Manual – SC5000 34 - Scrub System, Cylindrical
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CW CCW
Scrub Control
Scrub pressure is controlled by monitoring the motor amperage from both brush motors. If the combined
brush motor current is below its target amperage, the deck is lowered slightly to increase brush pressure. If
the combined amperage is above the target amperage, the deck is raised slightly. Additionally, if either one
of the motors is operating above its maximum allowed amperage, the deck is raised.
The motor amperage is sampled every 100ms and averaged over a period of several seconds, but adjustments
are made only at 10 second intervals to lter out minor variations in the oor.
Deck Type Floor Type Scrub Level Min Amps Max Amps
Cylindrical
Standard
Low 20 30
High 30 40
Extreme 40 50
Smooth
Low 15 25
High 25 35
Extreme 35 45
Individual Motor Max 25
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