Removal And Installation; Brush Motor Amperage Check - Nilfisk-Advance SC2000 Service Manual

Service Manual – SC2000

Removal and Installation

Brush Motor Amperage Check

Warning! This procedure must be
performed by qualified
personnel only.
1. Drive the machine on a level floor.
2. Remove the brush.
3. Lift the recovery tank assembly and the driver's
seat.
4. Disassemble the electronic component
compartment cover and the function electronic
board panel.
5. Disconnect the drive system connector (A)
(Figure 6) on the function electronic board (B) to
disable machine movement.
6. Insert the operator key in its slot.
7. Press the One-Touch button
brush deck.
8. Apply the amp clamp (C) to an electrical cable
(D) of the brush motor.
A
Figure 6
(*) Voltage value supplied by the electronic board to the brush gearmotor when the gearmotor amperage is
less than the value of the RPM parameter.
9. Activate the brush by pressing the accelerator
pedal, then check that the brush motor
amperage is between 3 and 4A at 20V(*).
10. Deactivate the brush by releasing the
accelerator pedal and raise the brush deck by
pressing the One-Touch button
11. Remove the amp clamp (C).
12. If the amperage is higher, perform the following
procedures to detect and correct the abnormal
amperage:
◦
◦
13. If the above-mentioned procedures do not lead to
to lower the
a correct amperage, it is necessary to replace the
brush motor.
B
Note: Use a jumper wire to disable
the driver's seat sensor.
Check the brush motor carbon brushes.
Remove the brush motor then check the con-
dition of its components.
C
Scrub System, Disc 67
.
D