Guide Specs

SERIES 35 FIBERGLASS BELT DRIVE DUCT AXIAL FAN SK-880-35 NOVEMBER, 1997

The Fiberglass Belt Drive Duct Axial Fan shall be manufactured by Hartzell Fan, Inc.®, Series 35. Standard sizes are 12" through 60". Fans shall be supplied without a guide vane section. The fan shall be packaged, completely assembled and ready to install.

The resin used on fiberglass axial flow fans is Ashland Hetron 693 which is a polyester resin with 3% antimony oxide added to achieve a Class I flame spread rate of below 25 per ASTM E84 tunnel test standards and NFPA Code 91 for blower and exhaust systems, which is OSHA approved. Fan construction shall conform to ASTM Standard D4167 for fiber reinforced plastic fans and blowers.

Fiberglass propellers, fan housings, and components shall be capable of being used in temperatures up to 200° F. The propeller shall be airfoil design, 6 blade one piece construction. The propeller shall be solid fiberglass with an aluminum insert molded into the hub for secure attachment to the shaft. The airfoil propeller shall not have an aerodynamic stall characteristic. Fan housings shall be constructed of solid fiberglass including the flanges which have drilled mounting holes. Motor mountings are steel plate coated with resin and mounted on the drum exterior with glass mat, cloth and resin. The encapsulated assembly base, zinc plated steel riser bolts and epoxy coated motor base provide support for the motor. Motors shall be open end protected. All other hardware shall be Type 304 stainless steel.

Fan shafts shall be ground and polished Type 304 stainless steel. Bearings shall be located in a sealed drive compartment to prevent corrosive element entry. Bearings shall be heavy duty, self-aligning, and shall have extended lube tubes and be relubricable for continuous service with a minimum L10 life of 50,000 hours. Variable pitch sheaves shall be standard on fans up to and including 10 HP and belts sized for continuous service. Fans shall be designed for mounting in any position from horizontal to vertical.

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 Hartzell's AMCA accredited test laboratory and in accordance with AMCA Standard 210 for air performance and AMCA Standard 300 for sound. Fans shall be licensed to bear the AMCA Certified Air Performance Rating Seal.