min\) blower, operating from an 18 to 30 Volts direct current \(Vdc\) power source.

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MIL-PRF-62284B(AT)

3.1 First article. When specified (see 6.2), a sample shall be subjected to first article

inspection in accordance with 4.1.1.

3.2 Design, materials, and manufacturing processes. Unless otherwise specified (see

6.2), the design, materials, and manufacturing process selection shall be the prerogative of the

contractor as long as all articles submitted to the Government fully meet the operating, interface,

ownership and support, and operating environment requirements specified. Asbestos and

Cadmium materials shall not be used in any form in any part of the blower assembly. No item,

part or assembly shall contain radioactive materials in which the specific activity is greater than

0.002 microcuries per gram or activity per item equals or exceeds 0.01 microcuries.

3.2.1 Fungistatic materials. All nonmetallic materials shall be inherently fungistatic or

treated to resist fungus growth except when used for components of potted or otherwise moisture

sealed assemblies.

3.2.2 Dissimilar metals. Dissimilar metals shall not be used in intimate contact unless

suitably protected against electrolytic corrosion. This restriction does not apply to continuous

plating, cast, inserts, or potted assemblies.

3.2.3 Recycled, recovered, or environmentally preferable materials. Recycled, recovered,

or environmentally preferable materials should be used to the maximum extent possible provided

that the material meets or exceeds the operational and maintenance requirements, and promotes

economically advantageous life cycle costs.

3.3 Operating requirements. The blower assembly shall meet the following performance

requirements:

3.3.1 Operating characteristics. The blower shall have the following operating

characteristics:

a. Rated voltage: 24 � 0.5 Vdc.

b. Blower load current: 8 amperes (A) (max.) with 0 inch (in.) of water at blower

inlet and outlet.

c. Blower load speed: 11,500 revolutions per minute (rpm) � 10 percent (%) with

0 in. of water at blower inlet and outlet.

3.3.2 Air flow. The blower shall meet the minimum airflow requirements of figure 1.

3.3.3 Electrical characteristics.