Belimo's LF damper actuators are a series of 4 Nm actuators with safety function for operating dampers and valves in building services. LF rotary actuators are suitable for air dampers up to approx. 0.8 m2. The series includes: LF24, LF24-S, LF230, LF230-S, LF24-SR.
The LF damper actuator moves the damper into the operating position while charging the return spring. When the power is interrupted, the return spring returns the damper to the safe position. The LF damper actuators are easy to mount directly on the damper axle using a universal mounting clamp, supplied with a tape to prevent the actuator from turning. The angle of rotation is adjusted using mechanical stops. The LF actuator offers highly reliable operation as it is overload protected. It does not require limit switches and stops automatically when it reaches the stop.
• With a spring,
• Nominal torque 4Nm,
• For air dampers with an area of up to approx. 0.8 m2,
• Mechanical connection, universal mounting clamp: 8...16 mm,
• Movement time - 90° motor: from 40 to 150 seconds,
• Working time in the 90° safe position: less than 20 seconds,
• Direction of movement - motor: selectable by mounting L/R,
• IP 54.
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