Toro 41177 Multi-Pro 1250 Operator's Manual page 34

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.
Calibrating the Flowmeter
The Spray Pro monitor comes approximately
calibrated for the flowmeter. Complete the
following procedure to fine tune the flowmeter
calibration:
1. Set the parking brake.
2. Fill the sprayer tank with a known quantity of
water, at least 100 US gallons (380 L).
Note: Do not rely on the marks on the
side of the tank for measuring the water
for this procedure. They are approximate
measurements, but not accurate enough for
this calibration.
3. Set the pump switch to the On position to
start the pump.
4. Set all three boom switches and the master
boom switch to the On position. Run the
booms only until the air is purged from the
line, then turn them off using the master boom
switch.
5. Turn the selection dial to the Total Volume
position.
6. Press and hold the Reset calibration button
until the display reads "0".
7. Set the master boom switch to the On position
and run the booms until all the water is out
of the tank, then stop them using the master
boom switch.
8. Compare the volume displayed on the monitor
to the volume of water you put into the tank.
• If the volumes are the same, you do not
need to calibrate the monitor any further.
• If the values are different, continue with
the rest of this procedure.
9. With the selection dial set to the Total Volume
position, press and hold the Calibrate button
until the monitor displays "CAL HOLD" and
the red light on the monitor illuminates.
The display will alternate between the total
volume reading ("HOLD" shown) and the
flow calibration value ("CAL HOLD" shown).
10. When the total volume value is displayed, use
the Increase or Decrease calibration buttons
to change it to the amount of water you put
in the tank.
11. When the display begins alternating again, the
flow calibration value will have changed; write
this number down and save it. This is the
calibration value for your sprayer.
12. Press the Calibrate button until the red light
turns off. You can also exit calibration mode
by driving the sprayer.
Calibrating the Speed Sensor
The Spray Pro comes approximately calibrated
for the speed sensor. Complete the following
procedure to fine tune the speed sensor calibration:
1. Check and fill all tires; refer to Checking
Tire Pressure in Drive System Maintenance,
page 51.
2. Fill the fresh water tank.
3. Fill the sprayer tank half-full of water.
4. Select a straight, flat track of ground that is
similar to your turf conditions.
Note: Using a road or other paved surface
could cause an inaccurate reading when you
later drive the sprayer on turf.
5. Measure 500 feet (150 m), marking both the
start and end points.
6. Position the sprayer at the starting point.
7. Set the pump and the master boom switches to
the Off position. The monitor should display
"HOLD".
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