A new range of Slimline fans, QB EC Series, employing intelligent-motor driven impellers that permit units to be optimised for specific applications with regard to efficiency, speed, acoustic performance and cost.

With an operating efficiency of up to 90% and being designed for compatibility with all conventional supply systems, from 12V DC up 480V 3-phase, these motors give ACI’s new QB EC Series fans economy of operation plus flexibility of application across their power, flow and pressure ranges – 40W to 520W/1400m3/hr (825CFM)/ 933Pa (3.75 in.SWG) respectively.

The intelligent motors harness permanent magnet motor technology with integrated electronic controls. This combination allows units to be set up to meet specific performance requirements and respond to feedback from such devices as heat, pressure and humidity sensors. There is no loss of efficiency at any running speed, unlike conventional AC fans, nor is there any electromagnetic hum.