smoke removal hatches control

Skylights control

Smoke removal skylights can be equipped with an automated pneumatic CO2 or electrical 24 V smoke removal system which allows opening hatches to an angle of not less 140° in case of fire.

 

            Automated pneumatic CO2 smoke removal system   

            The operating principle of the automated pneumatic CO2 smoke removal system is based on the kinetic energy of carbon dioxide (CO2) accumulated in a 30 bar pressurised cylinder. The cylinder is inserted in a thermal launcher, which is mounted on the bracket of the opening mechanism (automated control) or in the alert box (manual control).

            In case of automated control, smoke removal skylights are opened by the thermal launcher, which is fitted with a fuse cut-out, CO2 cylinder, and mechanism with a needle which pierces the shell of the cylinder.

            In case of fire, smoke removal hatches are opened by the fuse cut-out which, by fusing at a temperature of 68 ºC or 93 ºC, pierces the shell of the cylinder and releases the gases accumulated therein. Through the pneumatic system, the released carbon dioxide proceeds to the servomotor mounted under the skylight, pushes out the piston of the servomotor and fixes it in the end position.

Electric 24 V smoke removal system

The electric 24 V smoke removal system consists of several interoperable devices, which allow opening smoke hatches automatically or manually in case of fire.

The maintenance-free central control station, powered by 220 V current (fitted with a 24 V DC charger), which is given an electric signal in case of fire, is the main control device of the electric system.

The electric impulse received by the central station is transmitted by smoke detectors or temperature sensors. It can also be transmitted manually by pressing the smoke press-button. Upon activation of the control central station, electric mechanisms opening smoke hatches are activated automatically. Each control central station is equipped with accumulators which support emergency power supply to the central station within 72 hours.