horsch Maestro 12.45 CV, Руководство по эксплуатации

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If the air quantity is too low, the transverse distri -
bution may get worse or the hoses may block up.
No granulate should remain in the hoses.
In case of deposits open the gate valve further
or increase the fan speed.
Transverse distribution
The effect of insufficient air and poor transverse
distribution is difficult to be recognized, or only
after the seed has come up.
You should therefore always use rather more
than not enough air.
For the reason of comparison you may place
some granulate / fertiliser on the surface.
For an exact measurement one must catch the
quantities from the individual hoses and deter -
mine the volume and weight for comparison.
An exact specification for the gate valve adjust -
ment is therefore hardly possible.
Initial use
The metering units must first run in during initial
use.
NOTE
During initial use repeat calibration after one
hour running.
In use
During drilling the required amount of air is taken
from the fan air.
Gate valve for air flow
The air quantity depends on the setting of the
gate valve. The basic setting is "50" for 6 CV
and 9 CV as well as "100" for 12 CV.
However, the exact setting must be adapted:
Adjusting the air volume
The required air quantity, i.e. the adjustment
of the gate valve, depends on a number of
variables.
Besides the data for working width, number
of rows, required quantity kg/ha and working
speed, the shape, weight and surface of the
granulate is also of significance.
Not too much air should be used, so that gran-
ulate is blown out of the seed furrow or from
the surface.
With higher air volumes dust will also accumulate
increasingly on the components. The function of
the grain count sensor can be affected by this.
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