NORAC UC4.5-BC-AS1 - Manual (Page 13)

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5.2 Roll Sensor Mounting Guidelines
This system should only be installed on booms with a low center pivot with
the majority of the centering force due to the springs (not pendulum
centered).
1. When mounting the roll sensors, mount the lowest serial number on the boom frame and
the highest serial number on the intermediate frame (The relative angle of the two roll
sensors should change as the centering springs are compressed.). For optimal performance,
minimize the distance between the roll sensors (A) and minimize the distance from each
roll sensor to the pivot point (B).
Figure 10: Roll Sensor Mounting
2. Ensure the roll sensors are relatively level when the sprayer boom and chassis are level.
3. Both roll sensor cables should be pointing towards the right hand wing of the sprayer.
4. Ensure both roll sensors are mounted adequately and that the cables provide enough slack
to allow sufficient boom roll.