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|  MIL-R-81202D(AS)
6.7.2.2.5 Flushing procedure.
The liquid (6.6.2.2.1) shall be circulated through the fil-
a.
ter, into the receiver, out of the receiver and either down
the drain or through the pump back to the filter.
b.
Flushing shall be continued until the sample taken using the
suggested inspection procedure (6.6.2.2.3) meets the accept-
ance criteria.
c.
The liquid shall be emptied from the receiver.
d.
The receiver shall be rinsed with filtered solution (see
6.6.2.2.1 and 6.6.2.2.2).
6.7.2.2.6 Prepared parts. Prepared parts shall be immediately assembled
into the receiver. The tab washer shall be bent and the safety-wire installed.
6.7.3 Heat-vacuum-gas purge cycle. The receiver assembly shall be sub-
jected to a heat-vacuum-gas purge cycling test. The temperature of the re-
ceiver during the cycle shall be 110 +/-5.5C (230 +/-1OF). The vacuum in the
receiver during the cycle shall be 25 +/-5 microns of mercury, maximum pressure.
The gas pressure shall be 1500 +/-50 psig minimum, and the gas shall meet the
same requirements as established for the nitrogen gas used to test the re-
ceivers. Air may be used in lieu of nitrogen. The test shall be conducted as
follows:
The receivers shall be heated to test temperature.
a.
After temperature stabilization, receivers shall be subjected
b.
to three cycles of:
(1.) Ten minutes vacuum.
(2.) Five minutes pressure
At the end of the third cycle, exhaust the receiver to 225 psig
c.
and immediately pressurize to 2500 psi g using nitrogen.
Exhaust the receiver to 500 psig and allow to cool.
d.
The receiver shall be monitored for cleanliness in accordance with the manu-
facturer's standard procedure.
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