Layout and function
ED 02 BAH0023.0 03.14
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An ejector (Fig. 43/1) releases any broken
grains which could block up the holes of the
singling disc.
If several seeds are sucked into a hole at the
same time, an adjustable scraper (5 positions,
Fig. 43/2) carefully wipes off the excess seed
grains which then fall back into the seed hopper
area (Fig. 43/3).
Fig. 43
The seed fan (Fig. 44/1) creates a vacuum
which sucks the seed grains into the holes of
the singling discs.
The seed fan is driven
•
by the tractor PTO shaft, or
•
by a hydraulic motor.
Fig. 44
The vacuum is shown on a pressure gauge (Fig.
45/1) in the tractor cabin.
Changing the speed of the suction air blower fan
causes a change to the vacuum.
The required blower fan speed can be set using
the pressure gauge.
Fig. 45
The holes of the singling discs (Fig. 46) are
designed to match the seed properties (size,
shape and weight). The singling discs should
therefore be changed as appropriate.
The marking on the singling discs shows the
number of holes, the hole diameter, and the
colour of the singling disc, e.g. 30/5.0 green:
30 holes / diameter 5.0 mm, colour green.
Fig. 46
