Two-speed fan control theory and start debugging Fan Related Products: The fiberglass roof fan, induced fan, exhaust fan brand, centrifugal fans, induced fan, FRP fan, explosion-proof fans and other fans of the start-up and commissioning a fan to normal operation speed, should Fans detect each phase input power is normal, the fan operating current not exceed the rated current, if the operating current exceeds the rated current, the fan should check the supply voltage is normal. How it works: the usual two-speed high-temperature exhaust fan at low speed in order to meet the exhaust air volume, exhaust fan applications, when a fire occurs, Mianyang exhaust fan, temperature exhaust fan in the cabinet under the joint control of the role of automatic high-speed operation, in order to meet Smoke need, while fire smoke partition exhaust pipe smoke damper and smoke damper makeup air duct smoke and make no operation of wind, automatic smoke damper smoke partition in other linkage the role of the control cabinet automatically turn off when the flue gas temperature reaches 280 ℃, exhaust fan specifications, automatic smoke damper will automatically shut down, exhaust fan and make the fan automatically stop. storey 3.5 m, a total of five smoke partitions, fire design incorporates air conditioning and ventilation systems and smoke exhaust system combined approach. selected two-speed high-temperature exhaust fan, high speed exhaust volume of 63500 m3 / h, low exhaust volume of 35400 m3 / h, fresh air air supply and air make-up unit is 32000 m3 / h, all with automatic smoke damper smoke fire damper fan Use:. MHL3-2A, MPYH-14A (MHTFL-14A) Francis two-speed high-temperature exhaust fan can be used as high-temperature exhaust, ventilation dual-use conditions are as follows: 1, MHL3-2A, MPYH-14A (MHTFL-14A) Francis two-speed high-temperature exhaust fan for tunnels, underground garage, metallurgy and other high-temperature exhaust In case of fire, smoke quickly cool into the disaster area to assist firefighters extinguishing, fire safety is an essential facility. Exhaust fan exhaust fan repair _ _ Chenyu Mianyang air conditioning provided by Wu Cheng Chen-yu air-conditioning Limited. Wu Cheng Chen-yu air-conditioning Co. (www.wccykt.com) strong, credible, Shandong Texas fan, ventilation equipment industry has accumulated a large number of loyal customers. The company better work attitude and constantly improving innovative ideas will lead Chenyu into the brilliant air conditioning and you work for a better future!