378Service Manual – CS7000
Sweep System, Main
Functional Description
Overview
The main sweep system picks up debris from the oor and throws it into the hopper for later disposal. The
main sweep system includes the main broom, broom motor, and the broom lift actuator which lowers and
raises the main broom.
The broom lift actuator lowers the main broom any time the sweep system is enabled. The main broom
motor switches on when the drive pedal is moved from the neutral position. The operator can enable the
sweep system independent of the scrub system.
The hopper door opens when sweeping to allow the debris to be thrown into the hopper.
A potentiometer in the main broom actuator sends a voltage signal to the A1 Main Machine Controller that
varies with the broom height. The A1 Main Machine Controller uses this signal to return the broom to the
previous height setting whenever the sweep system is enabled.
The main sweep system has a “oat” function in which the main machine controller drives the actuator all
the way down so the weight of the main broom is resting on the oor. The linkage is slotted which allows the
broom to follow the contour of the oor.
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