Nilfisk-Advance SC800 Service Manual

Service Manual: SC750, SC800, SC 750 ST, SC800 ST
Form Number 56043150 Page 96
Brush Disc Remove Feature
The brush disc remove feature spins the brushes and then brings them to an abrupt stop to release the brushes from the
brush plate retaining springs. To accomplish this, a series of events takes place.
Step #1
First the Main Machine Controller checks to make sure that the scrub deck is fully raised, the charger is not plugged in
and that the machine is not moving. If all of this is true, the controller energizes the brush motor contactor to supply
baery posive through its normally open (Closed when energized) contacts to power up the brushes. The brush motor
contactor has a second set of contacts which are normally closed (Open when energized).
Step #2
While the brushes are running, the Main Machine Controller energizes the brush remove relay. This provides a baery
negave connecon to one of the “open when energized” contacts. Since that side of the contactor is open at this me,
nothing changes but the system is “armed” and ready.

Nilfisk-Advance SC800 Specifications

General

Brand	Nilfisk-Advance
Model	SC800
Category	Scrubber
Language	English