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The filling of the screens can be checked through
the inspection windows in the side doors. It is recom-
mended to place a powerful lamp next to the inspection
window on the opposite side of the cleaner, to facilitate
control through the window.
Inspection windows
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 to separate the small
kernels at sorting by kernel size, such as malt barley
and mixed crops of different kernel sizes.
The cleaning efficiency depends on the capacity - at
higher capacity, a lower cleaning effect is expected, as
the small impurities will have less time to pass through
the outer screen before the crop is lifted into the aspira-
tion cleaner.
