NORAC UC4.5-BC Operator Manual - Manual (Page 44)

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Sensor Swapping:
Swapping Sensors is a useful procedure for determining whether a sensor error message (e.g.
"LO NC") is due to the sensor or the wiring to the sensor.
Note: A sensor may have power and emit a ticking sound, but have broken communication wire(s),
which would cause this error. Performing Sensor Swapping would help determining the cause.
The procedure is as follows:
• Exchange the affected sensor with one that is reporting correctly (e.g. "LO" and "RO").
• Swap (input) their respective location serial numbers into the control panel (Section8.3.1).
• If the problem still exists in the same location, the wiring from that branch may have a fault.
• If the error appears in the new location, the sensor may not be functioning properly.
Sensor Alignment:
Proper sensor alignment is critical for proper UC4.5 performance.
• When the boom is in its lowest position, the sensor mouth must be 22cm (9 inches) or
more above the spray nozzles.
• The bottom of the sensor must be at least 25cm (9 inches) in front of the nozzles.
• The sensor must be approximately vertical at normal operating heights.
• Ensure that there are no obstructions within a 30cm (12 inch) diameter circle projected
directly below the sensor.
• When mounting or relocating sensor brackets, ensure they do not interfere with boom
folding operation.
• When mounting to the top part of the boom (Figure 17), check that the sensor cannot
read off the bottom part of the boom. This is most common in Crop Mode.
Figure 17: Sensor Reading Off the Boom
Sensor field
of view