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. There are fan impeller. Chassis, import collector proof exhaust fan, deflector, motor components. Meridian impeller has accelerated features twisted plywood pieces welded on wheels. After balancing check, speed test, with good aerodynamic performance. Using a cylindrical casing with mute function is coupled into a whole set of wind. Export loaded liver deflector, with good airflow enacted, the pressure is stable. PYHL-14A type fan design frequency secondary air exhaust fan, favorable to reduce the ambient temperature of the motor. Second, the use of fans HL3-2A series Francis fan HTF (PYHLK-14A) series of high-temperature exhaust fan Francis widely tunnels, underground garage ventilation, senior civil low-noise exhaust fan, metallurgy, factories and other places and fire temperature exhaust exhaust fan, HL3-2A series fan conveying gas temperature must not exceed 80 degrees Celsius, HTF (PYHL-14A) series fan operating temperature of 300 degrees Celsius. Adhesive materials are allowed within the gas contained in the dust and hard particles is not greater than 150mg / m3. Ex-special circumstances can choose Francis fan. Fire temperature exhaust fan, exhaust fan, Shaanxi, rose by up Rui Rui electromechanical 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!