We offer a service for this product: assembly of the actuator with the fitting. More information

Belimo EF Series Emergency Actuator for HVAC dampers or ball valves (e.g., Giacomini R250D with adapter). The actuator is designed for damper sizes up to approx. 6m2. The actuator is controlled by a 2-10V signal + 2x auxiliary contacts.

Function

In the event of a power interruption, the return spring begins to rotate the actuator to its default position. For example, during a power outage, it closes the damper or ball valve. The same can be achieved in reverse, depending only on the initial position of the damper.

The actuator can be operated manually using a locking button and a manual crank. 

Features

• 24V power supply
• The actuator is protected against overload, no end stops are required.
• Simple mounting on the damper shaft using a universal bracket.
• Adjustable working angle with mechanical stop.
• The actuator can be equipped with auxiliary switching contacts S...A or a feedback potentiometer.

Shaft Stabilizer

The actuator is factory-fitted with a shaft stabilizer for stabilizing the complete damper, damper shaft, and actuator. It consists of two plastic support rings and, depending on the installation situation and shaft diameter, it can be left in place or removed (partially, if necessary).

In the case of installing a long shaft with a diameter of 12-20mm, a stabilizer must be used. For a shaft diameter of 21-26.7mm, a stabilizer is not necessary.

In the case of installing a short shaft, the stabilizer can be removed.