Duncan EcoSeeder, Original Instructions Manual

Page: 21 / 81

19
Pt. No. 67392
Issue 0918
Basic Calibration Procedure
(Continued)
Seed Calibration
The calibration test should be done to confirm the required
seed rate and is done with the drill stationary and level.
Seed/Fertilizer Calibration Procedures
1
Remove the calibration tray from the storage brackets
on the seedbox. Place the calibration tray (1) on the
support members below the seeders .
2
Position all the clear plastic seed diverters (2) to redirect
the seed into the calibration tray.
3
Make sure all the shutters are open and set to the
position indicated in the seed charts for the particular
seed (Page 17).
4
Agitator Shaft - Check the Seed Chart “Hints” whether
to connect or disconnect the shaft during seeding by
removing the M10 bolt (3).
5
For the test, half fill the box with seed. If this is not
possible make sure the seed is evenly distributed within
the box.
6
For setting method refer to Basic Calibration Procedures
(Page 18).
Note
For seeds which are not covered in the Sowing Chart
(Page 17), use the figures for a seed of comparable size
and shape.
7
Place the crank handle (4) over the hexagonal drive
dog on the gearbox input shaft and turn anti-clockwise
until the seed flows consistently from the seeders. To
ensure complete filling of the seed unit continue turning
the crank until an even flow of seed is coming out of the
seeder units, then empty back into the seedbox. The drill
is now ready for calibration.
8
Turn the crank handle anti-clockwise the required
number of revolutions as detailed on the following page.
Note
The Calibration is usually done for 1/40th hectare.
For very small seed rates or when using inaccurate
scales (i.e. unable to measure to the nearest gram) the
calculation based on 1/10th hectare should be used.
Scales must be accurate to 2 grams as any error will
be multiplied by either 10 or 40 giving inaccurate
calibration results.
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