Logic LDS120 Operator's Manual - page 12
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6.3 – VANE REGULATION / ADJUSTMENT:
Should the distribution prove to be uneven, the operator can remedy this by regulating the angle
of all the vanes by adjusting the vanes to the different holes on the spreader disc.
6.4 – CALIBRATION (FERTILISER)
To precisely calibrate the spreader carefully read and perform the following instructions:
1. Place a measured amount of fertiliser in the hopper e.g. 10kg
2. Choose an aperture setting to suit the rate required for the type of fertiliser being used,
e.g. Setting 6
3. Obtain the desired travel speed (12 to 20kpH) and open the aperture to preset setting 6,
e.g. 200 metres. (NOTE: Maintain a constant speed)
4. Check the effective spread coverage width, e.g. 12 metres (D).
5. Measure the amount of fertiliser left in the hopper, e.g. 4kg (E).
Then perform the following calculations: -
Measured amount of fertiliser initially loaded in hopper (A): 10kg
Deduct any remaining fertiliser (e): 4kg
Balance used (B): 6kg
Multiply width of spread (D) by the metres travelled (C): 12 x 200 Mtr = 2400 Mtr²
Divide 10,000 (1hectare) by the answer (2,400): 10,000
2400 = 4.1
Multiply the sum (4.1) by the test quantity balance used (B, 6Kg): 4.1 x 6 = 24.6 kg/Ha
The figure achieved is the sowing rate per hectare at the constant speed selected for the test.
Due to the variations of seeds and fertiliser types, it is recommended the test be carried out for
each product being used. Adjust the machine accordingly until the desired application rate is
achieved.
Record all results to ensure accurate speed rates for future reference, use the chart provided on
page 13).
Vane adjusting holes
LDS120 / 240
LDS700