d. Start the system pumping unit. Refer to the applicable pumping unit technical manual.
e. Open inlet side valves slightly to allow the filter/separator (5) to fill slowly with as little pressure as
When the unit is completely filled, fuel will come through the vent pressure valve. Close vent
pressure valve. Make a visual inspection of all connections, joints, and piping components for leaks.
g. Open inlet side valves fully.
Figure 2-2. Starting the Filter/Separator.
2-10. Operating. (Figure 2-3)
a. Open outlet side valve(s) to fully opened position.
b. Observe the differential pressure gage (1). If reading is 0-20 psi (Green) continue operation. If
reading is 20-35 psi (Yellow) continue operation and notify unit maintenance upon completion of
refueling operation. If reading rises above 35 psi (Red), shutdown operation and notify unit
During operation, periodically check the water level sight gage (2) and monitor the opening of the
automatic drain valve (3). If the water level reaches the top mark, and the automatic drain valve (3)
does not open, open the manual drain valve (4) slightly until ball reaches lower mark, then close
d. Drain water