Nilfisk-Advance Advance SC370 Service Manual page 38

Service Manual- SC370
Brush motor current and the corresponding voltage at port J1-8:
Brush Motor
Current (A)
0
5
10
15
20
25
If the brush motor is overloaded and the protection function of software is disabled, the fuses (F1&F2) will stop the
brush to prevent continuous overload. To start scrubbing again after the brush stops due to overload, turn off the
machine, replace the fuses (F1&F2) in the Control board (EB2) and then turn on the machine.
To work properly, the brush motor (M1) needs the following inputs/conditions:

One-button start on

One of the two handle switches is pressed

Battery level not in condition with flashing segment
Brush Release Function
To release the brush from its hub, the brush motor starts up and then stops immediately. After the brush motor starts
up for several seconds, the wires on both sides of the brush motor will be connected to the positive terminal of power
supply at the same time, generating reverse current to stop the motor abruptly. The brush's inertia thus causes it to
disengage from the hub.
Volts at J1-8 (V)
(Battery voltage=26V)
0
0.39
0.84
1.26
1.72
2.15
34 Scrub System 37