6.2 Brush Pressure Adjustment (Disk Models)
11
The brush motors are switched on and off by a micro-switch located at the rear at the
brush head lift-out system Figure 6/3. This switch is a NO (normally open) switch. To
attain safe function of the brush motors, the correct adjustment of this switch is
required.
Electric connection of the switch is connected to the central control circuit board at
A1.X9:4 + 10 connector. In the lifted-up position, the switch should open and close
when brush head is lowered.
6.1
Brush Switch
Fig. 6/3
The bolt on the left can be adjusted to increase or
decrease the brush pressure.
Models with 19 gallon tanks This pressure adjustment
will affect the models in the normal scrubbing mode. (no
extra pressure option)
The indicator on the right should never be set past the
second notch.
NOTE: When making changes, the current draw should
decks under load maximum.
Lower settings are recommended for longer motor life,
longer run time and traction.
Verify the current with brushes under load, with a digital
clamp-on meter.
Only an authorized Service Center should make changes
to the brush pressure setting.
2nd notch
1st notch
Adjustment
Screw
Note: The factory setting
set at the second notch
Increase
pressure
Decrease
pressure
