Damper actuators

21 February, 2005

Just three types of damper actuator in the Siemens OpenAir range provide torques up to 35 Nm — with spring and non-spring return options available.

Only three types of electronic damper actuator from Siemens’ OpenAir range are needed to cover every normal HVAC application. They are available in types for small, medium and large positioning forces. All incorporate the Siemens cats-eye indication system to provide instant visual conformation of damper position, even if auxiliary switches are fitted. A self-centring system clamps the shaft on all sides, eliminating the risk of slippage. Pre-fitted cables for the actuator and auxiliary switches, if used, simplify installation. There is a manual over-ride. All rotary types, except those with small positioning forces, can have a single- or double-contact auxiliary switch for 5° increments up to 90°.

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