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11 Fieldwork
11.7 Separation
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11.7.3 Adjusting the separation performance
monitor display
The cleaning and separation performance monitor
allows the operator to make full use of the capacity of
the machine.
The display (3) allows the operator to determine how
fast the machine can be driven without the reasonable
grain loss limit being exceeded.
Grains lost over the back of the combine with the straw
fall onto the sensors (2). The excited pulses are visual-
ised by the meter lights of the display (3).
The sensitivity of the separation display can be set
depending on the properties of the crop (straw mois-
ture, green part, grain shape, leaf content of straw).
– Adjust the separation performance monitor
sensors.
– Set the sensitivity of the separation display and
the desired individual grain loss limit at switch (4).
The display reacts more sensitive / less sensitive,
depending on the adjusted set value.
Check the grain loss limit. Proceed as follows:
– Prepare fieldwork.
– Set the machine depending on the crop. See
threshing chart.
– Engage front attachment.
– Engage the threshing mechanism.
– Drive the machine into the crop at the speed
appropriate for the crop.
– Stop the machine when the forth to fifth light of the
meter light (3) lights up constantly after a sufficient
distance has been covered.
– Check the losses in the swath.
– If loss is at an acceptable level, continue operation
with selected setting.
– When losses on the straw walker are too high,
increase the gauge sensitivity by about half to one
step, using switch (4).
Now adjust forward speed until the fourth or fifth
light in the meter light (3) lights up again.
– When excessive losses on the straw walker con-
tinue, check the machine setting regarding
concave clearance, drum speed and deflector cur-
tain setting.
If the loss rate, indicated by the fourth or fifth light in
the meters, is acceptable, the capacity of the combine
is fully utilised at this forward speed.
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