Guide Specs

SERIES 13 BACKWARD CURVED CENTRIFUGAL FAN, DOUBLE WIDTH SK-880-13 NOVEMBER, 1997

The Belt Drive Backward Curved Centrifugal Fan, Double Width, shall be manufactured by Hartzell Fan, Inc.®, Series 13, ARRG. 3 or 7, Class I, II, or III. Rotation as determined by the drive side of the fan, shall be clockwise or counter-clockwise. Fan housing, for sizes 10 through 27, shall be field rotatable and the discharge shall be any of the four AMCA standard positions. Sizes 30 through 60 shall be a fixed construction for the rotation and discharge specified.

The fan housing and base shall be a heavy gauge commercial quality carbon steel suitable for temperatures up to 200° F. The housing and wheels shall be welded in compliance with AWS D1.1 standard. The wheels shall be commercial quality carbon steel with backward inclined, single, or double thickness airfoil blades and have non-overloading horsepower characteristics. The shafts shall be ground and polished. The fan bearings shall be heavy duty, self-aligning ball or roller type (depending on fan size, motor HP, and performance) and relubricable for continuous service. They shall have a minimum L10 life of 50,000 hours. The belts shall be an oil, heat, and static-resistant type sized for continuous duty.

The fan assembly shall be dynamically balanced at the Hartzell factory prior to shipping. Fans shall be balanced in accordance with AMCA Standard 204-96, fan application category BV-3 (comparable to Grade G6.3). Fans shall be manufactured in accordance with Hartzell's standard quality assurance procedures. Fan performance shall be based on tests conducted in HartzellÕs AMCA accredited laboratory in accordance with the latest revision of AMCA Standard 210 for air performance and AMCA Standard 300 for sound. Fans shall be licensed to bear the AMCA Certified Sound and Air Performance Rating Seal.