179Service Manual – SC5000 34 - Scrub System, Disc
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 250ms, but adjustments are made only at 45 second intervals to lter
out minor variations in the oor. The instantaneous amperage readings are averaged for the 45 second
interval.
Deck Type Floor Type Scrub Level Min Amps Max Amps
34D
860D
Standard
Low 20 30
High 30 40
Extreme 40 50
Smooth
Low 15 25
High 25 35
Extreme 35 45
Individual Motor Max 25
Operational Mode Prerequisites
Before the main controller can activate any of the operational modes, it must rst check that the appropriate
prerequisites are met.
• Scrub System Outputs
– Brush Motors M1 and M2 or Deck Actuator M7 (seat switch must be closed to enter scrub mode)
◦ No scrub system fault (brush motors and actuator motor)
◦ No recovery system fault (vac motors and squeegee)
◦ Throttle command not equal to zero
◦ No Estop inhibit
◦ No impact lockout inhibit
◦ No low voltage cut out inhibit (rst or second stage)
◦ No RTF inhibit
To Next Page
Loading...
Need help?
General
