TM 10-4930-351-14
OPERATOR, UNIT, DIRECT SUPPORT AND GENERAL SUPPORT MAINTENANCE
ADVANCED AVIATION FORWARD AREA REFUELING SYSTEM MODEL M100A1
SUPPORTING INFORMATION
Ballooning
Localized area of swelling on a fuel hose under pressure, indicating a weak area which may
burst.
Electrically connecting units before operations begin in order to equalize any static potential that
might exist and to provide a continuous path for any static potential that might be generated after
operations begin. Static potential is eliminated or prevented by grounding one or more of the
bonded units.
Coalesce
To grow together. To unite into a whole. To cause small droplets of water to unite into larger
drops.
Coalescer Element
A filter element designed to remove solid contaminants, and to break the emulsion of water in the
pumpage into large droplets. The pumpage flows from the inside to the outside of the element.
Defective
Condition of a part that prevents the part from performing its intended function, caused by normal
aging, accident or manufacturing imperfection.
Condition of a part caused by weathering, excessive heat, excessive cold, chemical action, etc.
Differential pressure
Difference between inlet and outlet pressure at a filter or pump. An increase of differential
pressure indicates a restriction or blockage in the unit (e.g., a build up of sediment in a filter).
Discharge Hose
Collapsible hose used on the output (discharge) side of the fuel transfer pump.
Dry break
Separation of couplings without loss of fuel.
Emulsion
A dispersion of fine water droplets in the pumpage.
Energize
Apply electrical power.
Grounding
Connecting single or bonded units to a ground rod so that any static potential will be discharged
into the earth. If two or more units are bonded and one is grounded, the entire system is
effectively grounded.
Malfunction
Failure to operate in a normal manner.
Monitor
To observe a condition or operation such as that indicated by an indicator light or meter.
Pumpage
The fluid being pumped by the fuel transfer pump.
Separator Element
A filter element that repels coalesced water droplets. The pumpage flows from the outside to the
inside of the element.
Suction Hose
Non-collapsible fuel hose used on the input (suction) side of the fuel transfer pump.
