K-series axial fans K-series axial fans are designed for application in factory assembled cooling towers and air-cooled heat exchangers. This is a pure Howden quality product, with superior performance at lowest power consumption and with timesaving features. K-series fan blades, with the innovative “Aerotip” (patented) and the radius-cut inboard edge, have been designed for a high power recovery providing excellent aerodynamic performance. Howden Cooling Fans The Netherlands The resilient and damped connection of the fan blades Tel: +31 74 255 6000 Fax: +31 74 255 6060 silently without vibration problems. Web: www.howdencoolingfans.com to the hub guarantees the fan will operate smoothly and K-series axial fans features Advantages • Assembly of a complete fan in 15 minutes. • Blades can be assembled onto the hub in any sequence. • Blade pitch angles are factory pre-set to match customers’ actual duty points. • No need to re-pitch blades after start-up due to reliable fan selection data. • Easy fan diameter reduction for out-of-tolerance fan casings. • Reduced vibrations transmitted to cooler structure. • Variable frequency drives (VFDs) can be used at any speed, except at cooler structure’s natural frequency. Features • Fan diameters range from 5 ft. to 16 ft. K-series fans are designed for operation in both horizontal or vertical position. • Standard operating temperature range from –46 °C to +120 °C (–5 °F to +248 °F). • Extruded aluminium master-balanced fan blades are supplied pre-assembled. • Resilient and damped connection of the K-series fan blades to the hub. • High quality carbon steel fan hub for ﬁtting to drive shaft with either a cylindrical bore or taper-lock bushing. • Steel parts are cataphoresed (as for automotive suspension components) or powder coated for high-grade corrosion protection. • Fan is packed in one box per cooler. Top: Assembly of the K-series fan Bottom: KNF fan in our parallel test unit.