MIL-PRF-16552F
of the above shall be interpreted to mean that the use of used or rebuilt
products is allowed under this specification unless otherwise expressly
stipulated.
3.3 Painting. Filter and component items shall be delivered with the
manufacturer's standard finish, except as to comply with the requirements of
3.2.
3.4 Welding and allied processes. Surfaces of parts to be welded or
brazed shall be free from rust, scale, paint, grease, and other foreign
matter. Welding and allied processes shall be performed by personnel certified
to American Welding Society standards. NAVSEA Technical Publication S9074-AR-
GIB-010/278 may be used for guidance.
3.5 Identification plate. Each air filter shall be provided with an
identification plate. The plate shall be of corrosion-resisting material and
shall be placed in such a manner as not to interfere with sliding the filter
into a filter housing. The following data shall be provided on the
identification plate:
a. Item name
b. Size (see 3.11)
c. National stock number
d. Contract number
e. Manufacturer's name and address
f. Whether item is non-magnetic
In addition, air filters requiring air flow in a single direction shall be
provided with an arrow and the words "air flow" or similar means indicating
the direction of air flow.
3.6 Interchangeability. In no case shall parts be physically
interchangeable or reversible unless such parts are also interchangeable or
reversible with regard to function, performance, and strength.
3.7 Human engineering. The air filter shall be arranged so as to
achieve safe, reliable, and effective performance by maintenance personnel and
to optimize personnel skill requirements. ASTM-F-1166 shall be utilized as a
guideline in applying human engineering design criteria for the filter.
3.8 Maintainability.
The filter shall be constructed so that:
a. The filter can be removed from the filter housing without special
tools.
b. The filter frame will not distort when removed from a spring-loaded
filter housing.
3.9 General shipboard design conditions.
a. The filter shall operate satisfactorily when exposed to soaking
atmospheric spray (rain or sea) or seawater.
b. Able to perform in accordance with requirements herein under ambient
temperatures between minus 10 and plus 95 degrees F.
c. Be capable of being washed in 190 degree F hot water with common
detergents.
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