improving air quality and fire safety Case study Imagine a public building serving tens of thousands of people daily. Good air quality and fire safety are matters of high pri - ority. VACON ® 100 X AC drives are an ideal choice to control fans that bring fresh air to the building and provide effective ventilation in case of fire. Vacon has supplied VACON 100 X AC drives to Per Aarsleff A/S, a leading Danish contracting company. Their exper

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