Fan exhaust system, exhaust pipes did not end set exhaust valves, fire exhaust fan and exhaust pipe connections smoke damper settings. When the fan control box (cabinet) in manual mode exhaust fan service, not linked with the fire alarm system. Note that exhaust valve and smoke damper is completely different device functions. Smoke damper is usually always open exhaust fan specifications, but also turned a fire, but when the flue gas temperature reaches 280 ℃, smoke fire damper automatically closes exhaust fan price, the linkage has been opened fan stops running. Exhaust valve usually normally closed, opened fire, and alarm host linkage, open the condition that an outbreak of fire alarm system (probe alarm) Fire Alarm System in the automatic state, exhaust valves open automatically start linkage exhaust fan. Exhaust fan, with a special compartment temperature measure exhaust fan, built-in circulation impeller can forcibly cool the motor, ensure that the motor temperature does not exceed a predetermined value. Run at 400 ℃ 100 minutes or more, long-term operation at 100 ℃. Can play a role of ventilation and fire smoke. The product was identified as Shandong Provincial Fire Department fire products sentinel production. Exhaust fan high temperature performance, high efficiency, small size, easy installation, etc., it can be used as temperature, humidity, corrosion-resistant type roof fans, used in electric power, petroleum, chemical, metallurgy and other high-temperature, high humidity industrial applications roof exhaust, ventilation. Exhaust fan quotes, up Swiss mechanical and electrical (online consultation), exhaust fan, ventilation and air conditioning provided by a 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.