MIL-F-52429F
4.6 Design.
When specified (see 6.2),
the following tests shall be
performed.
4.6.1
Environmental
conditions.
4.6.1.1 High temperature. The filter-separator shall be tested as
specified in MIL-STD-810, method 501.3, procedures I and II.
The maximum test
(71
, and the maximum operating
temperature for storage shall be 160
temperature shall be 125 `F (52 `C) .
The operating period of procedure II
shall be one hour or the operating time required to check for any component
failure due to high temperature.
4.6.1.2 Low temperature. The filter-separator shall be tested as specified
in MIL-STD-810, method 502.3, procedures I and II.
The minimum test
(-46
, and the minimum operating
temperature for storage shall be -25
(-32
temperature shall be -25
The operating period of procedure II
shall be one hour or the operating time required to check for any component
failure due to low temperature.
4.6.1.3
Failure criteria. Nonconformance to 3.4.1 or to the applicable
requirements of MIL-STD-810 shall constitute failure of either temperature
test.
4.6.2 Human factors.
The filter-separator shall be evaluated to determine
conformance to 3.4.2.
Nonconformance shall constitute failure of this test.
4.6.3 Maintenance ratio. The maintenance ratio shall be computed during
first article testing or during the configuration control testing to determine
the total active maintenance man-hours (scheduled and unscheduled) required,
to the total operating time.
Nonconformance to 3.4.3 shall constitute failure
of this test.
4.6.4 Reliability.
Using the MTBF specified in 3.4.4, the
filter-separator(s) shall be tested as specified in 4.5.2.1, 4.5.2.1.1, and
4.5.2.2, with "accept" and "reject" criteria in accordance with figure 1 At
the completion of above testing, continue testing in accordance with 4.5.2.1c
until an "accept" or "re]ect" decision is reached.
A failure is defined as
any malfunction which causes or may cause:
Failure to commence operation, cessation of operation, or performance
a.
below specified levels.
b. Damage to the filter-separator by continued operation.
c. Safety hazard to personnel.
Nonconformance to 3.4.4 shall constitute failure of this test.
Dependent
failures or malfunctions occurring as the result of improper maintenance
procedures or operator error are excluded from consideration as chargeable
failures.
Replacement of filter-coalescer elements shall not be considered a
failure.
4.6.5 Transportability.
The filter-separator shall be transported by a 5-
ton cargo truck over cross-country tactical terrain at an average speed of 8
mph (13 Kph) for a total of 100 miles (161 kilometers).
Damage to the
filter-separator or components when examined in accordance with 4.5.1 or
nonconformance to 3 4.5 shall constitute failure of this test.
4.7
Inspection of packaging.
Quality conformance inspection of pack.
4.7.1
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