Gason 7312, Руководство оператора

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Application Rate
– Ground Drive
Page 24
07/18
A
pplication Rate Calibration Process
1. Refer to the Rate charts in the rear of the
manual to determine the most appropriate
gearbox ratio and door setting for your
particular application rate.
Note: Always use the lowest gear possible at
the highest door setting to minimise the
loading on the gearbox.
2. Set ratio and door setting as per the chart.
3. Place material in the hopper. You will only
need to cover the rear door area to perform
the calibration process.
4. Determine the bout width you will drive at.
The bout width is narrower than the overall
spread width (refer to
Spreading Width for
further details).
5. Refer to the Calibration Jockey Wheel Turns
table on page 26 to determine the number of
rotations required at the jockey wheel to
simulate 1/20
th
of a hectare.
6. Place a bag or liner in the discharge area at
the rear of the spreader and prime the feed
chain with product.
Fig.39 Collection sample after priming.
7. Once primed i.e. a level and even flow of
product across the feed chain to the drop off
area, clean the liner or trays out and replace
them for the actual test.
Fig.40 Feed chain primed for calibration test.
8. Turn the jockey wheel the appropriate number
of turns to simulate 1/20
th
of a hectare, or if the
application rate is above 500kg/ha turn the
handle 1/10
th
of the stated handle turns.
Fig.41 Rotating the Jockey wheel.
Example
Spreading lime with an estimated bout width of 10
metres. The number of jockey wheel rotations in
table 44 is 39.1 turns. Because the application rate
is above 500kg/ha we will only rotate the jockey
wheel 1/10
th
of the standard turns (3.9 turns). This
means that when we have collected 1/200
th
of a
hectare sample and should multiply the sample
weight by 200 to determine the application rate per
hectare.