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What is a centrifugal roof exhaust fan?

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Quick Answer

A centrifugal roof exhaust fan is designed to exhaust the air from contaminants, such as grease or smoke, by creating an upward blast of air. A roof exhaust fan is generally mounted on the ceiling, wall or roof of a building structure.

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Full Answer

Air that contains grease and other pollutants as a result of cooking can be pushed away from a building’s roof surface by use of a centrifugal roof fan, making these fans suitable for use in the restaurant industry. A centrifugal roof exhaust fan may also be useful for storage rooms or for exhausting fume hoods. These fans are designed to look aesthetically pleasing and to perform their function quietly.

A centrifugal roof fan may steel and aluminum construction, a motor and drive frame mounted to the fan for vibration isolation and hinged steel supports for easy service access. The centrifugal fan can be belt or direct driven. The motor is protected from airborne contaminants as it is enclosed in a drive compartment and remains cool as a result of forced fresh air moving through it. An emergency disconnect switch may also be found on a fan unit. Some fans are suitable for outdoor use, while others are not weatherproof.

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