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setting, without affecting the Total Volume display. If
you press the Reset calibration button, the Sub Area
also resets.
• Total Volume
Displays the total volume in US gallons (US and
TURF) or liters (SI) that you have applied since you
last pressed the Reset calibration button for this
setting.
Calibration Buttons
The monitor has the following buttons:
• Reset
Resets the Total Volume, Sub Volume, Distance, Total
Area, and Sub Area display settings to 0.
• Calibrate
Used to enter and exit the calibration mode.
• Decrease
Reduces values displayed on the screen during
calibration.
• Increase
Increases values displayed on the screen during
calibration.
Calibrating the Spray Pro
Monitor
The Spray Pro monitor has a calibration mode that allows
you to change various settings to customize the display
and calibrate the monitor to your needs. You can calibrate
or change the following settings:
• Boom Width
• Units of Measure
• Speed
• Flowmeter
Setting the Units of Measure
The default setting for the units of measure is US. You can
also change the units to SI (metric) or TURF.
1. Stop the sprayer and set the parking brake.
2. Set the master boom switch to the Off position. The
monitor displays “HOLD”.
3. Press and hold the Calibrate button until the monitor
displays “CAL HOLD” and the red light on the
monitor illuminates.
4. Turn the selection dial to the Units of Measure
position.
5. Use the Increase or Decrease calibration buttons to
select desired units of measure.
6. Press the Calibrate button until the red light turns off.
You can also exit calibration mode by driving the
sprayer.
Setting the Boom Width
The default settings for the boom widths are 80 inches
(200 cm) for the right and left booms and 60 (150 cm) for
the center boom. This is based on 4 nozzles on the right
and left booms and 3 on the center boom all spaced
20 inches (50.8 cm) apart. If you change the spacing of
the nozzles, you should change the boom width to reflect
your changes as follows:
1. Stop the sprayer and set the parking brake.
2. Set the master boom switch to the Off position. The
monitor displays “HOLD”.
3. Press and hold the Calibrate button until the monitor
displays “CAL HOLD” and the red light on the
monitor illuminates.
4. Turn the selection dial to the Total Area position.
5. Use the Increase or Decrease calibration buttons to
select the boom for which you wish to change the
width, where 1 is the left boom, 2 is the center boom,
and 3 is the right boom.
6. Turn the selection dial to the Sub Area position.
7. Use the Increase or Decrease calibration buttons to
change the boom width as needed.
8. Repeat steps 1 through 7 for the other booms as
needed.
9. Press the Calibrate button until the red light turns off.
You can also exit the calibration mode by driving the
sprayer.
Calibrating the Flowmeter
The Spray Pro comes approximately calibrated for the
flowmeter. Complete the following procedure to fine tune
the flowmeter calibration:
1. Set the parking brake.
2. Fill the tank with enough water to prime and purge the
system.
3. Prime and purge the system.
4. Engage the PTO lever to start the pump.
5. Fill the sprayer tank with a known quantity of water, at
least 100 US gallons (380 L).
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