Automatic fire fighting installation - fire fighting medium is applied intermittently after flame detector operation

摘要

A fire fighting system includes an automatic electronic control system which can be connected with a central control position, and which includes smoke detectors, heat detectors and flame detectors. After the smoke detectors have operated at least twice within a short period, and at least one heat detector has operated once, and a warning has been given, the flame detectors are operated. The system then applies a fire fighting agent to the source of the fire in an intermittent manner, ensuring that a warning is sounded where the agent is a substance dangerous to human beings.