22
Calibration for fertilizer and seeds simultaneously
Turn the crank few times, so that the feeding chambers become properly filled. After this empty
the calibration trays carefully.
Rotate the land wheel the amount of rotations which is mentioned in the sowing table for the
machinery type in question. The rotation speed must be equivalent to used driving speed.
Weigh the seeds and fertilizer entered in the sowing trays. If the calibration test was carried out
with the rotation amount equivalent to are, the sowing amount per hectare can be arrived at by
multiplying the weighing results by one hundred.
After completing the calibration test the hose rack will be pulled back in sowing position and
handle lock will be locked back to its notch
Place the rotation piece of ground-wheel back in place and close the cover plates.
Fertilizer side calibration equipment use
The test is carried out as previously, with the exception that the seed-side transmission cassette
pin is removed for the duration of calibration test. Place the drainage coil to the calibration trough
under the fertilizer chambers.
Instruction to improve sowing accuracy
Calibration value stated in the sowing table is indicative. Its reliability is affected by, among other
things, ground quality and working depth.
Therefore, in the sowing table an indicative range for calibration results has been given:
Nova Combi 3000: 11 – 12 r/a
Nova Combi 4000: 8.25 – 9 r/a
The accuracy of sowing amount can be increased by carrying out a tensile test in sowing
conditions. Tensile test is carried out by pulling the machine a distance required for on are’s
sowing in the sowing conditions and at the same time counting the ground-wheel rotations. Write
the calibration test value down and use it when carrying out calibrations.
If the value you have measured differs greatly from the value stated in the sowing table value,
repeat the test. In the table below are the distances L for different working widths.
L = 33,3 m, when the working width is 3,0 m
L = 25 m, when the working width is 4,0 m
Also, check the accuracy of area-meter at the time of measurement.
Содержание Nova 3000 Star
Страница 38: ...38 ANNEX 2 LUBRICATION CHART...
Страница 39: ...39...