Dometic Marine, the world’s leading supplier of marine air conditioning introduces the new WhisperFan Controller to the US commercial market at this year’s International Workboat Show. Offering an easy and economical solution to noisy AC-motor-driven fans, the WhisperFan Controller uses pulse-width modulation (PWM) to make any AC-driven fan as quiet as a DC-driven fan, while also providing overload protection for the blower motor.
Compatible with all Cruisair® and Marine Air Systems® cabin controls, the WhisperFan Controller is simply installed between the electrical box and the blower. By pulsing the voltage hundreds of times faster than is possible with triacs (electronic switches) used by other fan-quieting technologies, the innovative device ensures a smoother motor current, resulting in extreme low-noise output.
The WhisperFan Controller makes blower fans up to 6 dBA (decibels adjusted) quieter than standard speed-controlled AC blowers. That’s a drop of about 50% in what the human ear can perceive.
“Unlike any other fan-quieting device on the market, the WhisperFan Controller also provides versatile user-defined fan-speed manipulation and supports cabin controls with 3, 5 and 6 speeds,” comments Matteo Giovanetti, Director of Technology, Dometic Marine. “For example, if the crew feel there is too much of a jump between the blower’s ‘low’ and ‘medium’ settings and not enough of a difference between the ‘medium’ and ‘high’ settings, they can readjust and fine-tune fan output for each setting to suit their preferences.”
By cleverly monitoring the electrical current going to the fan motor, the WhisperFan Controller will shut down if the level goes too high, providing overload protection for itself and the blower it is connected to. This is a smarter method of overload protection than what a fan typically uses, which is based on heat level.
Supporting blowers that are 208-240VAC/50-60 Hz for either direct expansion (DX) or chilled water systems, the WhisperFan Controller works with blowers up to 3 amps.
For further information on the new WhisperFan Controller, please visit the Dometic booth 2353 during this year’s International Workboat Show, 30th November – 2nd December 2011, New Orleans. Alternatively, please visit www.dometic.com.
To view the video on Dometic’s new WhisperFan Controller, please visit www.dometic.com/videos.