u
Position a collection vessel under the left
outlet.
Fig. 37: Implementing the calibration test
u
Start the tractor.
u
Set the PTO speed in accordance with the information in the fertilizer chart.
u
Open the left metering slide for the calibration test time stipulated before remotely from the tractor
seat.
u
Close the metering slide when this time has elapsed.
u
Switch off the PTO and the tractor engine and lock them to prevent unauthorized starting.
u
Determine the fertilizer weight (taking into consideration the empty weight of the collection
vessel).
u
Compare the actual quantity with the target quantity.
Actual output volume = target output volume: Application rate stop is set correctly. End calibration
test.
Actual output volume < target output volume: Set the application rate stop to a higher position and
repeat the calibration test.
Actual output volume > target output volume: Set the application rate stop to a lower position and
repeat the calibration test.
You can use the percentage scale to reset the position of the application rate stop. For example, if
the calibration test weight is down by 10 %, the application rate stop is set to a 10 % higher
position (e.g. from 150 to 165).
The position of the application rate stop can also be calculated using the following formula:
u
End calibration test. Switch off the tractor engine and secure it against unauthorized starting.
u
Mount the spreading discs. Make sure that the left and right spreading discs are not confused.
8. Calibration
MDS 8.2/14.2/18.2/20.2 5902916
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