Tus neeg siv phau ntawv
Operating manual RM-O-3-D / Technical leaflet no. M375DD8 (05/2018) 5
3 Product description
Functional description
To prevent smoke from spreading in buildings, it is
extremely important that it is detected at an early
stage.
The RM-O-3-D duct smoke detector is used to sig-
nal to and release fire dampers and smoke
protection dampers. The duct smoke detector op-
erates on the principle of light scattering and
detects the smoke regardless of its temperature so
that fire dampers can be closed before the release
temperature is reached.
The duct smoke detector can also be used to
switch off fans in a ventilation system.
Fire dampers and smoke protection dampers close
because the power supply is cut off when smoke is
detected.
The duct smoke detector is suitable for fire damp-
ers and smoke protection dampers that are fitted
with one of the following:
• Electric spring return actuator (power off to close)
• Pneumatic actuator (pressure off to close)
• Electromagnet
①
②
③
④
⑤
⑥
⑦
⑤
④
③
②
①
⑦
⑥
Parts of RM-O-3-D