Kongskilde Demeter Classic CS Instructions De Montage Et D'utilisation page 17

Calibration of grass seed drill
1. Find the actual type of seed in the sowing table
(or one that is similar).
2. Now find the quantity in kg/ha in the table,
nearest to the required seed rate. The left-hand
column of the table shows the position of the
setting handle for different seed rates.
3. The setting handle is located on the side of the
grass seed drill, and has a scale from 0 to 21.
The figures 0 and 15 are cast into the handle.
One complete revolution of the handle moves
the seed rollers 3 mm, which corresponds to
one graduation on the scale. The seed rate is
increased by turning the handle clockwise, the
maximum setting being 0 and the minimum 21.
At maximum setting (0) the rollers must not jam
against the sides of the seed cells, therefore
turn the handle to 0 and then a 1/2 turn back.
Set the handle in the position which, according
to the table, corresponds to the required seed
rate.
4. Check to ensure that the cassettes are
mounted correctly. The table states whether the
agitator must be coupled or uncoupled. To
uncouple the agitator, remove the bracket (G)
and the split pin securing the cassette (H) on
the agitator shaft. The cassette must then be
pulled outwards and turned downwards so that
it is no longer in operation. Remember to refit
the bracket (G); otherwise the cassette can
easily fall off.
5. Place the calibration trough under the delivery
hose discharges. To line up the discharges over
the calibration trough it might be necessary to
take some of the hoses up out of the holders
during calibration. A tarpaulin can also be laid
on the floor to collect seed. The seed drill
calibration handle must be placed on the
gearbox shaft and then turned the same
number of revolutions as when calibrating the
seed drill. As a rule, it is necessary to turn the
handle the equivalent of sowing 1/40 hectare
and multiply the seed weight by 40. With
smaller seed rates, the recommendation is 1/10
hectare in order to avoid weighing errors.
6. Fill the grass seed hopper with seed.
Important: Seed must be completely dry and
free of impurities that might damage the seed
rollers.
Experience shows that even a rise in humidity
towards the evening can cause disturbances
and thereby uneven sowing. For this reason the
grass seed hopper should not be completely
full, but seed should be fed into the grass seed
hopper more frequently so that the agitator is
better able to keep the seed "alive".
7. Turn the calibration handle a few times and
make sure that seed comes out of all delivery
hoses. Collect the seed and tip it back into the
grass seed hopper.
8. Perform a calibration and weigh the collected
quantity. If 1/40 hectare is turned, the quantity
must be multiplied by 40 to determine the seed
rate in kg/ha.
9. If the seed rate must be increased, turn the
setting handle clockwise. It might also be
necessary to turn the calibration handle.
10. Repeat the calibration until the required seed
rate is established.
Note! The figures in the sowing table are given
as a guide only. Calibration is therefore
recommended since seed properties can vary
from year to year.
Remember! During sowing, the cover on
drilling equipment must remain closed and
retained with the elastic strap. Check regularly
to make sure that the correct quantity of seed is
being sown.
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