Multi Pro 1750Page 9 − 16Ultra Sonic Boom Kit (Optional)
Troubleshooting
For effective troubleshooting and repairs, there must be
a good understanding of the electrical circuits and com-
ponents used on the Ultra Sonic Boom System (see Ul-
tra Sonic Boom System Operation in this chapter).
NOTE: When troubleshooting an electrical problem on
your Ultra Sonic Boom System, refer to information re-
garding the sonic boom light and diagnostic lamp in this
section.
Ultra Sonic Boom Light
The ultra sonic boom light is included in the ultra sonic
boom switch on the dash panel (Fig. 9). This light should
be illuminated whenever the vehicle ignition switch is
ON and the sonic boom switch is in the automatic posi-
tion.
The ultra sonic boom light flashing quickly indicates that
the Ultra Sonic Boom System is in the calibration mode.
This mode allows the spray booms to be adjusted for the
desired boom height. The calibration mode lasts for
twenty (20) seconds after which the sonic boom light
should quit flashing.
NOTE: A sequence of switch movements is necessary
to engage the calibration mode. Refer to the Sonic
Boom Kit Installation Instructions for this sequence.
The ultra sonic boom light flashes slowly when the sonic
boom switch is in the automatic position and a boom lift
switch is pressed to manually change the boom height.
The flashing light will return to being constantly ON and
automatic operation will be re−engaged once the boom
switch is manually pressed to the lower position.
A slowly flashing ultra sonic boom light may also indicate
that a system fault has been encountered. In the event
that there is a fault in the Ultra Sonic Boom System (e.g.
there is no signal coming from a boom sensor), the af-
fected boom will raise briefly and then stop. The sonic
boom light will begin to flash slowly and the diagnostic
lamp on the console will also flash. If this occurs, refer
to Diagnostic Lamp and Troubleshooting Chart in this
chapter.
1. Lower Operator console 2. Sonic boom switch
Figure 9
1
2
Ultra Sonic Boom Calibration
The sensor calibration process is critical to the correct
operation of the Ultra Sonic Boom System. The calibra-
tion process establishes the sensor target distance be-
tween the boom and the turf surface. Typically, this
distance is approximately twenty (20) inches (51 cm).
Steps needed for proper calibration are identified in the
Ultra Sonic Boom Kit Installation Instructions.
While calibrating the Ultra Sonic Boom sensors, it is best
to perform the calibration process on turf. A shiny sur-
face (e.g. cement shop floor) can skew sensor signals.
Also, ensure the calibration area is free of buildings,
trees, underground plumbing and other machines that
could interfere with sensor signals.
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