3 FUNCTION DESCRIPTION
The FAN press screw separator serves for separating solid-liquid-fiber suspension with relatively low
solid matter content and no foreign bodies such as metal parts, stones, wood or rags into solid and
liquid fractions. As a compact device, it combines the functions of two separators, specifically the func-
tions of a screen and a press.
The FAN press screw separator is designed for sustained operation outdoors. It operates unimpaired
in a temperature range of 0-40 °C; in event of freezing temperatures, it must be ensured that the sepa-
rator is cleaned completely each time before being taken out of operation. Conditions of high humidity
(e.g. locations near to the coast) and extreme sunlight as well as installation in areas at risk to explo-
sion (gas: max. zone 2 (G)) require special designs for the gears and motors. Consult the manufactur-
er concerning such designs.
When selecting the feed pump and the overflow line, make certain that the separator is operated under
no pressure.
In the inflow area, the mixture is drained of water via gravity inside the screen. The interior auger
transports the pre-drained material horizontally toward the solid outlet. Along the last section of the
transport path, the auger presses out additional liquid, which escapes the separator through the screen
as effluent. The required contact pressure is applied to the escaping solid by a system consisting of a
cap loaded by a weighted lever.
The separating result depends mainly on the viscosity and on the composition of the media. Users of
the FAN separator have with this machine many options for optimizing the separating result.
The throughput can be increased be selecting a larger screen gap width.
The residual moisture in the separated solid decreases as the contact pressure of the output
regulator is increased.
The solid matter content in the separated liquid can be reduced with a smaller screen gap width.
The degree of solid separation is improved by smaller screen gap widths.
More information about the configuration options can be found in section 7 “Initial Start-up”.
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