Sensitivity Setting Of Straw Walker And Sieve Loss Sensor - New Holland CX720 Operator's Manual

SECTION 2 – CONTROLS, INSTRUMENTS AND OPERATION
Sensitivity setting of straw walker and sieve
loss sensor
When selecting the straw walker (thresher) loss
bargraph or the sieves loss bargraph, a pop-up
screen 1 appears on the screen. The sensitivity
setting is displayed from 0 to 100, the higher the
number, the higher the sensitivity.
To set both sensitivities, proceed as follows:
1. Drive the combine in the field. Stop the combine
after a hundred metres and take a grain sample.
Check for grain losses in the swath. If the result
is unsatisfactory, carry out the necessary
adjustments (refer to Section 3, paragraph
headed: "Combine performance checks").
2. Repeat step 1 until a good result is obtained.
3. Drive the correct adjusted combine in the field
and select the highest ground speed consistent
with obtaining good results.
4. Select the straw walker loss bargraph and
change the sensitivity with the "+" and/or "–" key
until the lower half of the bargraph is illuminated.
Press the "enter" key to store the new sensitivity
value.
5. Select the sieves loss bargraph and change the
sensitivity with the "+" and/or "–" key until the
lower half of the bargraph is illuminated. Press
the "enter" key to store the new sensitivity value.
6. Increase the ground speed until one of the bars
is completely illuminated.
7. Stop the combine and check if the grain loss has
clearly increased. If not, this means that the
sensitivity of the bar that was completely
illuminated, was set too high. Set the sensitivity
on this bar on a lower level at the speed selected
under point 6.
If the rate of loss increases, more segments will
appear on the bargraph. If the rate of loss
decreases, segments will extinguish.
8. The setting of the sensitivities of both bargraphs
has to be performed or at least checked
whenever changing from field or crop.
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