Oliver Hi-Cap N Series, Руководство по эксплуатации

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However, the stratification area is small when removing rocks or stones from beans,
because there is a large difference in weight. Higher capacities likewise require
greater areas for stratification.
Once the material is stratified, the vibrating deck begins pushing the heavier
layers in contact with the deck uphill toward the stone discharge. At the same
time, the upper lighter layers, which do not contact the deck, begin to float
downhill toward the clean product discharge.
It should be noted that, since the stratification process is not instantaneous, some
of the heavier materials will be carried down the deck toward the discharge end
before they can sink to the bottom of the fluidized bed. This is normal and
acceptable as long as the heavy trash does not flow off the deck with the cleaned
product. When you are not making a proper separation, it is an indication of one
of the following problems:
1.
Feed rate too high - stratification area too large.
2.
Machine improperly adjusted -- improper stratification.
3.
Material not suitable for separation on a stoner.
Each of the above is a distinct problem and will be discussed fully in this manual.