4.9.4 MACHINE YARD CALIBRATION
After the nozzles have been calibrated, it is
recommended that the entire system be cali-
brated. A yard run is the simplest method to
determine total volume delivered. To calibrate in
the yard, follow this procedure:
1. Fill the tank full of water (no chemicals).
2. Check that all screens are clean.
3. Set the chemical system and boom pressure
to the desired value and run the tractor at the
selected engine RPM.
4. Spray in a stationary position for a known
period of time.
5. Refill the tank and measure accurately the
amount of water used.
6. This will give the amount of spray used per
time.
The total volume can be changed by increasing or
decreasing the chemical system pressure. How-
ever if a change is made, it is recommended that
the entire system be calibrated again to determine
the new volumes.
4.9.5 GROUND SPEED CALIBRATION
For optimum spraying results, it is important to
maintain a known constant speed to spray the
required chemical over a given area. Because of
wheel slippage, the operator cannot rely on the
tractor speedometer reading to give the value of
true ground speed. The unit must be timed over a
known distance to determine true ground speed.
To calibrate, follow this procedure:
1. Mark off distance of 100, 200 or 300 feet in
the field to be sprayed (longer distances
provide greater accuracy).
2. Place the tractor in the gear to give a speed
between 6 and 8 mph (9.5 and 13 kph) and at
the selected engine RPM.
3. With the tank 1/2 full of water, drive the tractor
and sprayer through the measured distance.
4. Record the time required to travel the meas-
ured distance.
5. From Table 3 determine the actual tractor
speed. You can shift gears to change speed
but it is recommended that you go through the
measured distances again to determine true
ground speed when using the manual control-
ler.
30
6. If the machine is equipped with the automatic
controller, the ground speed can be changed
by up to 20% without acquiring adjustments.
However, do not decrease the throttle below
its 2/3 setting.
IMPORTANT
Always operate at the engine
RPM determined in Section 4.9.1.
Summary of Contents for Fast Sprayers 9500 Series
Page 68: ...63 Fig 62 BOOM TILT PIVOT 3 Grease boom tilt pivot 1 location each boom Left Right...
Page 78: ...73 This page left blank...
Page 88: ...7 4 CHEMICAL CIRCUIT SCHEMATIC 82...
Page 89: ...7 5 ELECTRICAL SCHEMATIC CABLE 10 CONSOLE 3 OR 6 BOOM SCS 440 450 CONSOLES...
Page 90: ...CABLE 33 FLOW CONTROLLER 3 OR 6 BOOM VALVES 84...
Page 92: ...86 7 7 9500 SERIES 5 FUNCTION HYDRAULIC CAB BOX 9600 SERIES 60...
Page 93: ...7 8 9500 SERIES 5 FUNCTION CAB BOX WIRING 9600 SERIES 60...
Page 94: ...7 9 9600 SERIES 80 100 6 FUNCTION HYDRAULIC BLOCK 88...
Page 95: ...7 10 9600 SERIES 80 100 6 STATION CAB BOX...
Page 96: ...7 11 9600 SERIES 80 100 6 STATION CAB BOX WIRING 90...
Page 97: ...7 12 PARTS LIST FOR YAW BLOCK 91 7 12 9500 SERIES 120 132 YAW BLOCK...
Page 98: ...7 13 9500 SERIES 120 132 YAW BLOCK HARNESS 92...
Page 99: ...7 14 9500 SERIES 120 132 YAW CAB BOX...
Page 100: ...7 15 9500 SERIES 120 132 YAW CAB BOX WIRING 94...
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