SFFS000000 - Carel 24V DC Smoke Detector

The optical smoke detector senses the presence of combustion byproducts (visible smoke). The operating principle is based on the light scattering technique (Tyndall effect).

The detector is used as an active component in alarm systems requiring a fire detection line.

The device can be integrated into Carel controllers, and is made in compliance with EN 54-7.

Maintenance

For correct detector operation, periodical maintenance must be performed depending on the country disposal.

Periodical testing

Check correct detector operation using a smoke generator (making sure not to damage or dirty the sensor). An alarm can also be simulated by activating the internal reed switch by magnet at the point marked “Reed” on the wiring diagram. Note however that the reed test does not verify correct smoke detection.

Cleaning

Clean the detector periodically by blowing compressed air into the detection chamber. Remove the detector by unscrewing the two screws and open the detection chamber. After cleaning reassemble the unit, paying special attention to the position of the base (make sure the internal reed switch is aligned with number 4 stamped on the base). Close the detector using the two screws, without over-tightening