After the water and large particulates are centrifugally separated from the fuel, the fuel passes upward through a
set of 10 removable filter elements (figure 1, item 5), which remove smaller particulates. As the fuel travels
through these filter elements, any particulates whose size exceeds the filter elements' rating are trapped in the
filter media. These particulates remain trapped in the filter media until the filter elements are replaced. During
normal operation, 30-micron filter elements are used in this system. If desired, filter elements with 10- and even
2- micron ratings may be used. However, use of these finer filter elements will reduce the overall service life of
the installed filter elements and will decrease the service interval.
A water sensor probe (figure 1, item 6) is fitted in the lower portion of the fuel filter/water separator assembly. This
water sensor probe senses the difference in conductivity between water and fuel. When fuel is in contact with the
water sensor probe, no alarm indication is given. When water comes in contact with the water sensor probe, the
alarm indicator (figure 1, item 7) illuminates and sounds an audible warning to alert the operator. When the alarm
activates, it is up to the operator to secure the fuel filter/water separator and drain the sump. There is no
automatic shutdown for this system.
END OF WORK PACKAGE