Nilfisk-Advance SC6500 40C User Manual

Control System 33Service Manual – SC6500
™
Control System
Functional Description
Overview
The control system consists of the A2 Control Board Assembly, the A3 Switch/Display Panel Assembly and
associated sensors and circuitry.
A2 Control Board Assembly
The A2 Control Board Assembly, sometimes referred to the
main controller, communicates with the Curtis A1 Speed
Controller
and the A3 Switch/Display Panel Assembly to
coordinate the operation of the various machine systems.
The A2 Control Board Assembly is fastened to the Electrical
Mount
behind the electrical panel cover assembly to the
left of the Operator seat.
One primary function of the A2 Control Board Assembly is
to position the scrub brushes relative to the oor surface
using a lift actuator motor. The A2 Control Board Assembly
continuously monitors the brush motor current draw to
maintain the desired scrub pressure on the oor.
• If the brush motor current drops below the desired
range, the A2 Control Board Assembly switches on the
lift actuator motor to move the scrub deck downward
until the brush motor current draw is within the
correct range for the scrub pressure selected.
• If the brush motor current rises above the desired
range, the A2 Control Board Assembly switches on the
lift actuator motor to lift the scrub deck upward until
the brush motor current draw is again within the
correct range for the scrub pressure selected.
Note: Refer to the Scrub System section in this
manual for a complete explanation of
scrub deck operation.
A secondary function of the A2 Control Board Assembly is to detect any system failures and display the
corresponding error code on the display panel, or store it in the control board’s recall memory mode. The
error codes are used to help service technicians determine the fault and to guide in repairing a specic
system malfunction quickly.
Note: See the Troubleshooting section for further information.
The A2 Control Board Assembly also allows you to change program settings for a set of specic machine
functions. See the Main Control Programming Options section in this manual for further information.
A2 Control Board
Assembly
Electrical
Mount
Curtis A1
Speed
Controller

Nilfisk-Advance SC6500 40C Specifications

General

Brand	Nilfisk-Advance
Model	SC6500 40C
Category	Scrubber
Language	English