Service Manual-CA60 34 Scrub System DISC(CA60 20D/20TD) 50
34 Scrub System, Disc (CA60 20D/20TD)
Functional Description
The disc brush system can be started by the operator.
The disc brush turns counter-clockwise.
The rotating brush system cleans the surface of the floor.
The main component of the brush system is the deck
where the brush or the pad holder with pad suitable for the
type of surface to be cleaned is installed.
Brush rotation occurs only when the brush motor (M1) is
driven by one of the two handle switches. The brush
system uses the solution to wash the floor.
In case of brush motor overload, the circuit breaker (F1)
stops the brush to prevent continuous overload.
To start scrubbing again after a brush stop due to
overload, turn the machine off, reset the circuit breaker
(F1), turn the machine on.
To work properly, the brush motor (M1) needs the fol-
lowing:
Brush function on
One of the two handle switches is pressed
Battery level not in critical condition with flashing
segments.
Brush Release System
To release the brush from its hub, the brush motor starts
up and then stops rapidly. The brush’s inertia thus causes
it to disengage from the hub. First the contactor K1 turn
on, two seconds later, the release Relay in E1 will on,
cause J4 short to J5. Then K1 turn off. When the K1 turns
off, both sides of the motor are connected to battery
positive which causes the brush motor to stop rapidly.
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