Spreading operation 8
94
8.10.2 Implementing the calibration
Requirements:
The metering slides are closed.
PTO and tractor engine are switched off and locked to prevent unauthorised
starting.
An adequately sized hopper is ready for collecting the fertiliser (minimum ca-
pacity 25 kg).
- Determine the empty weight of the collecting vessel.
Prepare the calibration test chute. The calibration test chute is located in the
centre behind the spreading disc guard.
A sufficient quantity of fertiliser is placed in the hopper.
The preliminary settings for the metering slide stop, the PTO speed and the
calibration test time are specified and known from the fertiliser charts.
n WARNING
Risk of injury due to chemicals
Escaping fertiliser may lead to injury to eyes and nasal mucous
membrane.
Wear safety goggles during the calibration.
Before running the calibration test, ensure that all people
leave the hazard zone of the machine.
NOTICE
Select the values for the calibration test in a way that the largest quantities of
fertiliser possible are calibrated. The higher the quantity, the higher the precision
of the measurement.
[1] Position of the calibration test
chute
Figure 8.12: Calibration test chute
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