Causes and solutions to false alarms
False fire alarm phenomenon is very common in a fire alarm system, if not properly installed and maintained regularly. It makes the system ineffective and causes a lot of trouble for users as well as management units. Therefore, it is very important to limit and find the cause to overcome it, here is an article to share the causes and how to fix false alarms.
False fire alarms often occur in a fire alarm system if not installed properly and maintained regularly. It makes the system ineffective and causes a lot of trouble for users and management units. Therefore, limiting and finding the cause to overcome it is a very important issue. Below is an article sharing the causes and ways to overcome the phenomenon of false fire alarms.
I. Causes Due to Installation: Customize the detector's sensitivity (some brands support it) accordingly Areas with frequent temperature changes such as kitchens and machine rooms must use fixed heat detectors In areas where there is often dust (stoves storing rice bran, cement, etc.), smoke detectors cannot be used but must be used with heat detectors. Installing detectors in the wrong environment: In a fire alarm system, to ensure the system operates correctly for a given environment, there is a type of detector suitable for that field. Using too many detectors on 1 channel Signal wire is too small: Every channel on a fire alarm center has regulations on limiting the number of detectors. You should not install more than the limited number, leading to near the Alam threshold, which can lead to false fire alarms. The signal wire should not be of the type with a cross section that is too small, it must comply with the company's regulations Asynchronous installation: In some cases, fire alarm panels and detectors from two different brands are used. This case should be minimized and the Alam line and Surge Current line must be checked and compared.
II. Operational Cause: Maintenance:
Equipment in the fire alarm system, especially smoke detectors, must be cleaned and maintained periodically, usually every 6 months. Due to the operating principle of the smoke detector (signal reception in the smoke chamber...) the device cannot distinguish between smoke and dust. Therefore, the detector must be cleaned regularly. If not cleaned when the dust reaches the threshold, it will lead to false fire alarms. Equipment: In the system, there is a malfunctioning equipment that can lead to false fire alarms, especially with addressable fire alarm systems, isolate and replace the damaged equipment.
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