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8.2.3
•
Invalid sensor measurement: Displaying "
NR
"
Possible Cause(s)
Suggested Solution(s)
a)
Sensor is out of range
or reading a target
closer than 18cm
(7 inches)
a-1)
Move the boom(s) until sensor(s) is
between 80 and 150cm (30 and 60 inches)
above the ground.
a-2)
Check sensor alignment (Section 8.2.7).
NOTE: If the sensor is facing forward/backward too
far, the signal cannot echo back to the sensor.
a-3)
Check for obstructions between the sensor
and the ground.
NOTE: Any object between them can deflect the signal
such that it cannot echo back to the sensor.
b)
Protective foam shield
is contaminated
b)
Inspect and clean the foam shield. Remove
the foam and clean with compressed air.
NOTE: Do not blow out the foam while it is still in the
sensor. Sensor damage will result.
c-1)
Moisture in sensor
c-2)
Direct exposure to
rain
NOTE:
It may cause this error
especially if the sensor mouth
points upward while sprayer
booms are folded to transport
position. Measures should be
taken to minimize rain
exposure to sensors.
c-1)
Remove the protective foam shield and
check the sensor’s transducer foil.
c-2)
Allow the transducer to dry.
NOTE: The foil is the gold-colored material beneath
the metal screen. The foil should be clean, dry
and wrinkle free.
NOTE: Running the sensor will accelerate the drying
effect.
d)
Ultrasonic transducer
is damaged or
contaminated
d)
Follow a) to c-1), and listen to the sensor
for a ticking sound. If the sensor is not
ticking or the transducer is contaminated,
the sensor may need repairing.
8.2.4
•
Displaying "
SNR xxxx
" during Automatic System Setup
Possible Cause(s)
Suggested Solution(s)
a)
Improper sensor
alignment
NOTE:
Sensor is not reading the
ground properly
a)
Check sensor alignment (Section 8.2.7),
primarily the sensor involved with the
error. For example, if the System Setup is
performing a "
LftDet
" and this message
appears, check the Left wing sensor(s).
b)
Poor targets such as
wet gravel or stubble
b)
Try a different target.
