OPERATOR AND FIELD MAINTENANCE
FILTER/SEPARATOR, LIQUID FUEL, 50-, 100-, AND 350-GPM
Table 1 lists common malfunctions that you may find with your equipment. Perform the tests, inspections, and corrective
actions in the order they appear in the table. This table cannot list all the malfunctions that can occur, all tests and inspec-
tions needed to find the fault, or all the corrective actions needed to correct the fault. If the equipment malfunction is not
listed or actions listed do not correct the fault, notify your supervisor.
Table 1. Troubleshooting
TEST OR INSPECTION
Differential pressure gauge indication is 1.
Check pump operating speed and
Adjust pump speed as necessary
in the RED area of the gauge.
verify that it is within specified
Coalescer element contaminated
Immediately cease operation and
replace all canisters and coalescer
Verify that camlocks are securely
Secure camlocks properly
Fuel leaking from input or output
Stop operation and inspect
Properly seat gaskets or replace
in place, properly seated, and free
Fuel leaking from vessel cover
Check retaining band (50- and 100- 1.
Ensure retaining band locks
GPM) nuts for proper tightness.
properly, with nut torqued to 14 ft-
lbs. (50- and 100-GPM).
Check lid nuts (350-GPM) for
Ensure lid bolts are torqued to 150
Inspect head assembly o-ring for
Remove head assembly and replace
wear or damage
Check for ruptured coalescer
Replace all coalescer elements
Sudden drop in differential pressure
Check pump flow rate and
Perform maintenance on pump
Filter/Separator output flow is
Inspect discharge line for kinks or
Remove obstructions and
straighten line as necessary
Check differential pressure gauge
If reading is above limit, cease
and verify that reading is within
operations and replace all coalescer
limits (below red/15)
END OF WORK PACKAGE
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