Exhaust fan installation and maintenance: a kitchen fan is indispensable key equipment kitchen exhaust fan frequency, it is recommended not to install as much as possible on the ceiling, waiting for the room to be installed, the roof or exterior wall to facilitate maintenance of the place. Second, the kitchen fan because of long working hours in hot, humid, gas fumes. Regular maintenance is indispensable work. Point of failure: 1, the impeller blade curvature oily lead angle deformation, the air volume decreased significantly total pressure parameters, reach smoke requirements. 2, the impeller oil stains cause impeller to lose balance, increased vibration, bearing damage. 3, harsh environments parts easily rust, damage the fan. Exhaust fan fire adopt CAD hardware multi-frequency indicators to optimize exhaust fan leading technology vision, matching molded axial flow impeller, built cryogenic generators, generators specially arranged icing system. Selection of two-speed direct-drive generators to reach an amphibious machine (ie, usually sent when using low-temperature exhaust ventilation and fire smoke), arranged after the electrical control box can be short-range active master. The existence of high-quality low temperature capabilities, high frequency, small volume, simple installation (degrees, vertical, lifting may be) and other advantages of the preferred supplier of frequency exhaust fan, broadly used in the top-level construction, drying room, the sky garages, subways, tunnels and other places Fire and smoke exhaust ventilation frequency to send exhaust fan, according to the anti-snow machine GA211-2001 eliminate low temperature test methods, can continue running at low temperature above 280 ℃ for 40 seconds, the media have a measure of operating at 100 ℃ 20 hour times without protection, has been in town fire departments across the country will certainly adopt advanced technology frequency exhaust fan exhaust fan _ _ Beijing frequency electromechanical liter by liter Rui Rui HVAC Electrical Equipment Factory. L Rui HVAC Electrical Equipment Factory (www.dzsrxfkt.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 the Swiss electromechanical and you work up into the brilliant, for a better future!