DD Range

The consolidated experiences of ELCO with air moving devices, as well as with the manufacturing of fractional horse powered electric motors, have been of fundamental importance to design this range of high efficiency low noise direct driven blowers. ELCO has succeeded to realise a range of several hundred blowers’ models ranging in size from 7/7 up to 15/15 with airflows from 400 m3/h up to 7.000 m3/h, matching seven various housing and wheel sets with a wide selection of FHP motors.

The wide models’ selection gives the opportunity to choose, for air volumes up to 7.000 m3/h, the direct driven solution, avoiding extra costs, risks and maintenance which are peculiar of the belt driven design.

The ELCO DDE blowers have to be installed in weather protected environments to operate with powder free air, and with room temperatures ranging from – 30°C to + 40°C. Standard models are available either with “open” motors (protection class IP20) or with “totally closed” motors (protection class IP54), with one or more speeds, with 4 or 6 poles. The ELCO DDE is powered by our RG, FG and HO range of motors.

The DDE blowers are supplied with the capacitor already connected, assembled to the housing when using “open” motors, or inside the connection box by “closed” motors. All motors have insulation class B, and are equipped with pre-lubricated maintenance free sleeve bearings. They are designed and manufactured in accordance to the Direttive Bassa Tensione and Compatibilità Elettromagnetica, as well as to the Direttiva Machine, according to CENELEC EN 60335-1 Standard Norms. Additional approvals (VDE, UL, CSA, etc.) are available upon request.

Housing and wheels (these last static and dynamically balanced) are manufactured with galvanized steel plates to avoid any corrosion process. The blowers can be supplied without fittings, with a set of 4-positions support feet, or with a preassembled flange on the air blowing outlet.

For trouble free operation it is advisable to check, before starting, that no foreign matters eventually dropped into the housing. It is also required not to operate the blowers as “free blowing” (no pressure drops) to avoid motors’ overheat. The ELCO Technical Department is anytime at Customers’ disposal to support the best models’ choice, or when special, no-standard models are required.

General Specification Size: 7/7 to 15/15 Phase supply: Single or three Power output: 60 to 2000 watts Poles: 4 or 6 Enclosure: Ventilated or totally enclosed Speeds: 1 to 6 speeds