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|  MIL-C-52972A(ME)
water in the form of droplets rather than a fine mist. After 1/2 hour exposure
to the spray, the compressor unit shall be started and shall deliver rated
capacity for 1/2 hour, while the spray continues.
4.5.2.7.2 Failure criteria.
Any one or more of the following shall constitute
failure of this test:
a.
Inability of the compressor unit to start.
the compressor unit, engine crankcase, and fuel tank.
d.
Failure to deliver rated capacity.
4.5.2.8 Tilted position.
4.5.2.8.1 Test procedure. Operate the compressor unit in four tilted
positions, each of which shall be 15 degrees from the horizontal plane about the
compressor transverse and longitudinal axes. The test shall be conducted
operating the compressor unit for 1 hour at rated capacity in each of the four
positions, in a sequence whereby the compressor unit is operated first in the
position least likely to adversely affect the lubrication or fuel systems, and
lastly in the position most likely to adversely affect these systems. The fuel
tank shall be full at the start of each position run. Upon completing the last
position run, stop the engine and allow the compressor unit to stand in this
tilted position for 4 hours, then operate the compressor unit for one hour at
rated capacity. Capacity measurement shall be made at least once during each of
the five phases of the test.
4.5.2.8.2 Failure criteria. Inability of the compressor unit to produce
rated capacity, evidence of compressor unit air or fluid leaks, or any mal-
function shall constitute failure of this test.
4.5.2.9 Noise level test. Noise levels shall be measured in accordance with
MIL-STD-1474 requirements and reported in the format indicated by MIL-STD-1474,
figure 70 As a minimum: noise levels shall be measured when equipment is
operating under full load. MIL-STD-1474, 5.1.2.1.4 contours shall be taken at
not fewer than 12 equal (horizontal) arc increments, one increment shall include
data from the noisiest position. Additionally, the noise level at the typical
operating position shall be provided as dB(A) level. Failure to comply with
MIL-STD-1474 provisions shall constitute failure of this test.
4.5.2.10 Air/gas purity test. The air purity and gas purity sampling tests
shall be conducted in accordance with the procedures and requirements as stated
in the publications and procedure documents in 3.18.8.
4.5.2.10.1 Failure criteria. Nonconformance to 3.10.3 or 3.18.8; or
BB-A-1034, ASTM F 307, NAWEDCOMINST 6260.3 and NAVSEA O994-LP-OO1-9O1O air
testing procedures and results shall constitute failure of this test.
4.5.2.11 Electromagnetic interference. The compressor unit shall be subjected
to the tests specified in MIL-STD-461 for class III C equipment. Nonconformance
to MIL-STD-461 shall constitute failure of this test.
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