MIL-PRF-49175C(CR)
4.4 Conformance inspection.
4.4.1
Inspection.
Inspection shall be as specified in 4.2.1.
4.4.2
Tests.
4.4.2.1 Burn-in. Burn-in shall be in accordance with 4.7 and shall be
performed upon each cooler that has passed the inspection of 4.5.1.
4.4.2.2 Group A inspection. Group A inspection shall be conducted on all
coolers which have completed burn-in specified in specified in 4.4.2.1. Group A
tests listed in table II may be performed in any order unless otherwise
specified. Failure of any test shall be cause for rejection of that unit.
TABLE II.
Group A inspection.
Inspection
Requirement
Test
paragraph
paragraph
Cooling capacity
3.5.1
4.5.1
Cooldown time
3.5.2
4.5.2
Input power
3.5.3
4.5.3
Leak rate
3.5.5
4.5.5
Restart
3.5.7
4.5.7
4.4.2.3 Group B inspection. Group B inspections shall be conducted on
coolers selected from units which have passed the tests in 4.4.2.2 (see 6.2h).
The sample(s) shall be tested in accordance with the inspections listed in Table
III. Samples shall be selected in accordance with 4.4.2.4.1. Group B tests
listed in table IV may be performed in any order.
4.4.2.4.1 Sampling for group B inspection.
Group B samples shall be
selected as follows:
TABLE III.
Group B inspection.
Inspection
Requirement
Test
Paragraph
Paragraph
Acoustic noise
3.5.4
4.5.4
Vibration output
3.5.6
4.5.6
Temperature shock
3.6.1
4.6.1
Low temperature
3.6.3
4.6.3
High temperature
3.6.2
4.6.2
6
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