Guide Specs

SERIES 40 FIBERGLASS IN-LINE CENTRIFUGAL FAN SK-880-40 NOVEMBER, 1997

The belt drive Fiberglass In-Line Centrifugal Fan shall be manufactured by Hartzell Fan, Inc.®, Series 40. Standard sizes are 15" through 49". The fan shall be completely assembled, packaged and ready to install.

The resin used on the solid fiberglass wheel shall be Dow Derakane 510-A vinylester. Backward curved blades offer non-overloading, highly efficient operation. The wheel shall have a totally encapsulated aluminum core insert for secure attachment to the shaft.

Fan housing shall be constructed of Ashland Hetron 693 polyester resin and glass fiber with 3% antimony trioxide added to achieve Class I flame spread rate below 25. Fan construction shall conform to ASTM Standard D4167 for fiber reinforced plastic fans and blowers. All fiberglass surfaces shall be protected with a minimum 10 mil thickness of chemical, flame and ultraviolet resistant resin. Motor mounting plates are steel and mounted on the housing, covered with resin, mat and cloth. The inlet cone and airflow straightening guide vanes shall be solid fiberglass. The entire housing shall have a finish coat of resin to provide superior protection and smooth air flow. All airstream hardware shall be 304 stainless steel.

Fan shaft shall be ground and polished 304 stainless steel. Bearings shall be located in an enclosed drive compartment and shall be heavy duty, self-aligning, with extended lube tubes for continuous service, with a minimum of 50,000 hours L10 life. A neoprene shaft seal shall be located where the shaft enters the inner bearing housing with a neoprene shaft slinger between the seal and wheel. V-belt drives shall be sized for continuous service.

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.