Applied mechanical exhaust system is 280 ℃ damper, usually it is normally closed when the fire broke by automatic fire alarm interlock signal automatically open, along with a manual actuator, they can be opened manually, it can be opened in the remote fire control center (ie joint control, manual control, automatic control in three ways). In order to prevent false alarms general practice fire protection system to manual mode, when the fire occurred is confirmed by the control room or field manually turned on, and the linkage exhaust fan is turned on. Smoke dampers are mainly used in ventilation and air conditioning systems, smoke dampers usually installed in the fire separation of the computer room ventilation and air conditioning systems is 70 degrees Celsius damper, usually always open, Shijiazhuang damper, when the flue gas duct the temperature reached 70 degrees is automatically turned off. Control mode automatically. Smoke damper is mainly used in mechanical exhaust system is 280 degrees Celsius damper, damper specifications, usually normally closed, damper repair, when the fire broke by automatic fire alarm interlock signal automatically open, along with a manual actuator, dampers price, you can manually open, but also in the fire control center remotely turn (ie joint control, manual control, automatic control of three ways), usually installed in the exhaust port, the duct through the fire and smoke partitions separate office and discharge smoke duct through the wall of the room, when the temperature of flue gas duct of 280 degrees closed. Damper specifications, the Swiss mechanical and electrical liter (certified), Shijiazhuang damper ventilation and air conditioning provided by the liter Swiss mechanical and electrical equipment factory. L Rui HVAC Electrical Equipment Factory (www.dzsrxfkt.com) is an industry leader in Shandong Dezhou, fans, ventilation equipment, over the years, the company implement the scientific management, innovation and development, the principle of honesty and trustworthiness, and satisfy customer needs. In liters Swiss electromechanical leadership with the staff warmly welcome all inquiries negotiations to create liter Swiss electromechanical better future.