Exhaust fan installation and maintenance: a kitchen fan is indispensable key kitchen equipment, it is recommended not to install in the ceiling as possible, to be installed in the engine room, 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. Positive pressure low noise axial blower Description: Low noise axial positive pressure blower: can be used in metallurgy, chemical industry, light industry, food, medicine and other places civil ventilation or enhance heat dissipation purposes If cabinet removed, can also be used as a free fan fire exhaust fan manufacturers, can also be installed in series in a long interval of exhaust pipes to improve the pipeline pressure. Positive pressure blower is pointing escape corridor air blower. It outdoor air pressure into the interior. When building a fire temperature exhaust fan fire, will produce a lot of smoke, carbon monoxide and other toxic gases and exhaust fan fire blocking the line of sight prices, positive pressure blower through the fire escape stairs to air, indoor smoke can not reach the fire stairs exhaust fan, to create the conditions for people to escape. Positive pressure blower usually installed on top of buildings, and the layers of the positive pressure valve linkage. Initial fire damper is open, positive pressure blower starts, so the stairwell, elevator hall in positive pressure (air condition). Large high-temperature exhaust fan fire exhaust fan fire _ _ Hebei liter by liter Swiss Swiss Mechanical and Electrical 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!