2000 | Guide Specification |
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AAF-OSS |
SECTION I. GENERAL DESCRIPTION Contractor shall furnish and install the AAF-OSS self-contained, extractor and utility fume control plenum per plans. The unit shall be an AAF-OSS as supplied by AAF International of Louisville, Kentucky, USA, or approved equal. The capacity of each unit at nominal rating shall be to produce at least 3175 actual cubic feet per minute. Free air rating shall be at least 4800 cubic feet per minute airflow with new cartridges. Fan wheel is a 15 airfoil, backward inclined, non-overloading high efficiency spark resistant type. Motor shall be; 5 HP, 3450 RPM, 208v/13.2A, 230v/12.2A, 460v/6.1A, 575v/5.8A, Extractor shall be of a downflow design with filter,inlet cone, fan, and motor aligned vertically in the same plane. Total dimensions are not to exceed inline configuration 76 H x48 L x 26 W Over the side configuration 76H x 40L x 35W. The top mounted 14 diameter intake and cyclonic separator is designed to extinguish sparks and distribute airflow evenly across the filtration media. The entire intake and separation assembly is mounted to the hinged utility fume control platform, side mounted air piston provides mechanically assisted open and closed for filter cartridge maintenance. The primary filter cartridge consists of 450 square feet of pleated composite cellulose 99.9% efficient at .3 micron particulate size. A vertically centered threaded rod and locking nut provide gasket compression on the filter element. The extractor will have a minimum of 25 sq. feet of 1 thick class one acoustical lining. Total extractor noise shall not exceed 74 DBA @ 3 ft. The extractor will make use of stamped convection louvers in the side panel to enhance heat transfer away from the motor. The housing frame, filter pedestal, and side panels shall be of 12 Ga. Steel construction. |
The side panels are situated to provide access to two sides of the fan wheel, motor, and electrical fittings. Top discharge silencer provides direction correctional attenuation of high frequency blower noise. SECTION VII. OWNERS MANUAL A wiring diagram corresponding to the extractor shall be included in the Owners Manual. SECTION VIII. WARRANTY The collector shall have a one year (12 month) material and workmanship warranty. All other components are covered by a one year manufacturers (12 month) warranty. |
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