MIL-DTL-62011E
a. Test fuel discharged by the pump shall not be allowed to re-enter the tank.
b. The pump shall be operated until performance below that specified on figure 1 recurs
consistently.
c. The fuel level shall be observed and the level at which pump delivery and discharge
pressure deteriorates shall be noted.
d. After pump delivery drops to 0 gph, the discharge line shall be closed and air pressure
developed by the pump shall be measured.
4.6.5 Dry operation (see 3.5.3). The fuel pump shall be dry operated and meet the requirements of
3.5.3. The following details shall apply:
a.
The pump shall be mounted in the test apparatus, test fuel added and all fluid and
electrical lines connected.
b.
The pump shall be operated at a minimum obtainable discharge pressure.
c.
While the pump is operating, the fuel tank shall be drained to a level below the pump inlet.
d.
The pump shall be continuously operated without fuel for a period of not less than 4
hours.
e.
Thereafter, the test fluid level shall be raised until the pump is again submerged to a fluid
level at least 2 inches above the fuel inlet and the pump shall be tested as specified
in 4.6.3.
4.6.6 Electromagnetic compatibility (see 3.5.4). The pump shall be tested for conducted emissions
in accordance with method CE102 of MIL-STD-461 and meet the requirements of 3.5.4.
4.6.7 Dielectric strength (see 3.5.5). The fuel pump shall be dielectric strength tested and meet the
requirements of 3.5.5. The following details shall apply:
a.
The pump motor housing shall be disassembled, or cut open to the extent necessary, to
permit the internal ground connection to be disconnected or isolated and to permit
observation of internal wiring.
b.
The motor shall be observed for a period of 1 minute while being subjected to 500 V root
mean square (rms) at a frequency of 60 Hz, applied between conductor and ground.
4.6.8 Vapor separation (see 3.5.6). The fuel pump shall be vapor separation tested and shall meet
the requirements of 3.5.6. The following shall apply:
a.
The test apparatus in 4.2.5 shall be modified by adding a means to return vaporized fluid
to the tank through condensation.
b.
A means shall also be provided to lift or tilt the pump to allow the pump inlet to be raised
above the fluid level.
c.
The pump shall be mounted in the test apparatus tank and fluid and electrical lines
connected.
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