Extractor fan KD SERIES

axialductcommercial

The Circular duct fan is reliable in operation and maintenance- free and has a mixed flow impeller. In addition to that the fan achieves a high efficiency at low noise level. The box consists of crimped and electroplated steel plate, witch is powder- coated. For an easy assembling the installation cramps are fixed to the fan. The provided standard connecting collar of the FK - mounting clamps assures an easy assembling and disassembling and avoids the transmission of vibration to the piping system. The assembling is possible in each fitting position. Furthermore the fan has a freewheeling radial impeller with backwards-curved impeller vane. The actuation is carried out by a maintenance- free, speed- controlled external rotor motor. Through dropping the tension, the fans can be speed- controlled with the help of a stepless thyristor or a 5- step transformer. The fans have integral thermal contacts with reset device according to EN 60335-2-80 for protecting the engine. For annealing the engine is designed inside the air flow. Completely with the impeller in two levels the engine is statically and dynamically weighed heavy according DIN ISO 1940. Fans are equipped with an external terminal box with protection class IP55. KD fans have mixed-flow impeller. These are made of aluminium, coated in black, dynamically balanced and paired with corresponding external rotor motors. The KD fans are intended to use for supply or extract air, designed to be installed in any position. This ensures that the fans can be used in a variety of commercial and domestic applications.