3. OPERATION
3.5 OPERATING PROCEDURES
Follow the set up procedures outlined in section 3.4.
That section contains important information for getting the best performance and efficien-
cy from your machine.
3.5A General
The shakerhead assembly contains two sorting decks surfaces called screens. Certain
application will require you to change screen sizes for better results. There are a number of
screen sizes and multiple combinations are available to sort varied material. Proper screen
sizing makes this a truly multipurpose and efficient machine that is able to handle fine sands,
rock, wood product refuse, etc.
The basic rule of thumb for selecting screen sizing is a 3 to 1 ratio, top to bottom respec-
tively. Example: 3” (76mm) top screen, 1” (25mm) bottom screen. However, in some cases,
it may be more efficient to run the material through a larger screen combination first, then
change the screens to obtain the final product size. This would be desirable when the materi-
al being sized clogs the screens or feed rate becomes excessively slow.
The most common type of screen material is called “wire cloth”. Various diameters of
wire are overlaid together to make varied openings. The actual diameter of the wire used dic-
tates the surface area of the hole.
Example: A screen 2” square, using a 0.25 wire diameter would have a larger hole open-
ing than a 2” square using 0.50 wire diameter. The smaller diameter wire used on the screen
will be more efficient, due to the larger open area, but the screen life will also be shorter. A
larger wire diameter material will wear longer.
Wire cloth screens may be ordered in square or rectangular (slotted) pattern. A slotted
pattern will process material faster, though larger material will slip through.
See section 6 for more screen size information.
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