11
Adjustment of inclination
Ensure that the cleaner has the correct inclination.
A recommendable starting point would be to set the
cleaner to an angle of inclination of approx. 5°.
The inclination should never be less than 4,5°, and
the max. required inclination will normally be 7°.
The inclination affects the flow velocity, the layer
thickness on the screens and, accordingly, the
cleaning efficiency.
The effect of the inclination may be
illustrated by the following general
information
Inner screens
The inner screen arrests large impurities.
At increased inclination, it is easier to separate the
large impurities as they move more quickly across
the screen to the outlet, at the end of the screen
drum.
The large impurities will have less time to be
rotated or broken and, accordingly, pass through
the screen.
This, however, also allows the crop less time to
pass through the screen before reaching the outlet
at the end of the screen drum - and being mixed
with the impurities.
Outer screens
The small impurities are separated on the outer
screen. The outer screen is also used in the
grading of malting barley to separate the small-
sized grains.
At increased inclination, the crop will move more
quickly across the outer screen, resulting in higher
capacity and reduced separation of the small im-
purities, since less time passes before the crop is
lifted into the aspiration cleaner.
Capacity
The cleaning efficiency will generally depend on
the capacity, as a smaller load on the screens will
improve the separation of impurities. Therefore
adjust the material flow to the cleaner, to obtain the
desired cleaning efficiency.
Do not fill more grain into the machine than can be
handled by the inner screen. If the machine is over-
filled, part of the grain will reach the opposite end of
the screen drum and mix with the screenings from
the inner screen.
The best result is obtained with dry crops.
Increased moisture content reduces the perfor-
mance of the cleaner.
Adjustment of aspiration cleaner
1. First close air slide (A) completely.
2. Adjust the guiding plates by means of the han-
dle (B), to ensure that the crop layer is equally
high in both sides of the cleaner. This may be
checked through the inspection windows on the
sides.
