The JA-110ST is used to detect fire hazards in a building interior.
The product is not designed to be installed in industrial premises.
The JA-110ST consists of an optical smoke detector and a heat detector.
The optical smoke detector is very sensitive to large dust particles which are present in dense smoke.
It is less sensitive to smaller particles generated by the combustion of liquids such as alcohol.
That is why the fire detector also contains a built-in heat detector which has a slower reaction but is much better at detecting fire which generates only a small amount of smoke.
The detector has a status reaction (reports its activation and deactivation).
Detector location
The smoke detector must be installed so that any smoke easily drifts into the detector owing to natural thermal currents (usually on the ceiling).
The detector can only be used in enclosed interiors. It is not suitable for interiors where smoke can disperse over a large area and cool down (e.g. interiors with extremely high ceilings – above 5 m) – the smoke would not reach the detector position.
Detector testing and maintenance
The functioning of the detector can be tested with a special spray designed for smoke detector testing to simulate fire.
The valid EN standards recommend you to perform detector testing once in 30 days.
The detector must be regularly cleaned of dust, cobwebs, etc. Warning: never test the detector with fire.
