Two-speed fan control theory and start debugging Fan Related Products: FRP roof fan two-speed exhaust fan fire, inducing fans, centrifugal fans, induced fan, FRP fans, explosion-proof fans and other fans of the start-up and commissioning a fan reached normal operating speed, the Fans should be checked each phase input power supply is normal, the fan operating current can not exceed the rated current, if the current exceeds the rated current to run the kitchen exhaust duct fans, fans should check the supply voltage is normal. 1. test no less than two, one to control the power of a person to observe the functioning of the fan, found anomalies immediately stop inspection; First check the direction of rotation is correct; fans during each phase of the operation should be checked whether the current balance, current is exceed the rated current; if not normal, you should stop checking. Five minutes after the operation, the fan down to check whether there are anomalies, confirmed that no anomalies start running again. 2. The two-speed fan exhaust fan when commissioning, should be started at low speed exhaust fan wholesale and check the direction of rotation is correct; after the fan still must be renewed at the start speed to prevent reverse rotation speed, causing the switch to trip and the motor by Loss. Exhaust fan price | Jilin exhaust fan | Chen Yu-conditioned factory outlets provided by Wu Cheng Chen-yu air-conditioning Limited. Wu Cheng Chen Yu Air Conditioning Equipment Co., Ltd. (www.wccykt.com) strong, credible, in Dezhou 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 air conditioning and you hand into the brilliant, for a better future!