MIL-S-26716A (USAF)
Test units constructed in more than one section shall have individual working
The working area and sump drain combination
areas integral with each section.
shall be so designed and located as to facilitate installation, removal and
visual inspection of accessories undergoing test
The cabinet shall be constructed that vibration from
3.5.14 Vibration.
mechanisms operating the test stand shall not be transmitted through the
structural members to the instrumentation, thus imparing readability and
accuracy,
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3.5,15 Lights.
If found to be required, lights shall be vapor proof, of
ample wattage, and unless otherwise specified, be powered by 110 volt, single
phase, 60 HZ current. Guards shall be provided around light bulbs to prevent
personnel contact and inadvertent bulb breakage.
3.5.16 Integral lighting,
Instrumentation shall be selected insofar as
practicable to eliminate need for integral lighting.
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3.5.17 Ventilation.
Louver type air vents shall be provided in the
cabinet near floor level and in the top to promote air circulation, or the
cabinet shall be provided with forced ventilation if found to be required for
any reason such as prevention of overheating of instruments and other
electrical/electronic components.
3.5,18 Drip pan.
A drip pan or pans shall be provided within the inclo-
The pan shall be installed to catch all leakage which may drip from any
sure .
part or flow down the inside walls of the inclosure.
Drip pan(s) shall be
constructed of not less than 14 gage metal.
Pan(s) shall have a minimum of
1 inch slope toward the center of the unit (or section).
(The center is to be
interpreted as the center of the instrument panel section(s) normally facing
the operator. ) A channel (or gutter) shall be incorporated into the center of
each pan which shall in turn have a minimum of 2 inches slope from the front
to the rear of the stand,
Channel(s) (or gutters) shall terminate with not
less than 1 inch female pipe coupling(s) at the rear of the test equipment
unit , a minimum of 2 inches above the floor,
Drain(s) shall be installed in
an accessible location for cleaning,
Pans shall be adequately reinforced to
location for cleaning.
Pans shall be adequately reinforced to withstand,
without permanent distortion, the combined weight of repairman and components
being removed and installed,
Units constructed in sections shall have
3.5.18.1 Equipment sections.
individual drip pans installed in such a manner to prevent leakage between
sections and drip pans shall be installed and supported in such a manner to
insure complete drainage of each section.
Test fixtures shall be constructed in such a manner
3.5.19 Test fixtures.
as not to interfere with adjustments that are required during calibration.
Test fixtures for test stands designed to test only one type of accesory shall
be furnished as component parts of the stand and identified as additional
details to the basic test stand drawings.
Various test fixtures for test stands designed
3.5,19.1 General purpose.
to test a multiple number and type of accessories shall not be included with
the basic test stand, with the exception of the base mounting fixture which
Additional fixtures
shall be furnished as a detail to the basic test unit.
shall be furnished as test sets under separate manufacturers' part numbers.
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