Patent ID: 11971182
Assignee: FLÄKTGROUP SWEDEN AB
Field: Thermal processes and apparatus (Mechanical engineering)
Classification: CPC F  Y | IPC F

Claim 9:
10. A method for controlling a safety system for evacuation of contaminated air and prevention of ignition in an air handling system, wherein the air handling system comprises a power supply, wherein the power supply is divided into a safety system power supply and an air handling power supply, wherein power is provided to the air handling system by means of the air handling power supply, wherein power is provided to an air flow sensor, an air contamination sensor and an extraction unit by means of a safety system power supply, wherein the method comprises the steps of:
collecting air contamination data by means of the air contamination sensor;
comparing the collected air contamination data to a predefined air contamination threshold value;
shutting down the air handling power supply providing power to the air handling system as a response to if an air contamination data value of the collected air contamination data is greater than the predefined air contamination threshold value, wherein the evacuation unit comprises a duct and an extraction unit, and wherein the power supply is divided into a safety system power supply and an air handling power supply, wherein the safety system power supply provides power to the extraction unit, the air contamination sensor and the air flow sensor, and wherein the air handling power supply provides power to the air handling system, wherein the safety system power supply and the air handling power supply are operating independently of each other.