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, resulting in greasy impeller blade curvature, angle deformation exhaust fan quotes, significantly decreased the amount of wind total pressure parameters, reach exhaust requirements. 2, the impeller oil stains cause impeller to lose balance, increased vibration, bearing damage. 3, harsh environments parts easily rust, damage the fan. HTF series fire temperature exhaust fan. Is optimized design and development of new products. It has high efficiency, smooth curve characteristics conducive to energy conservation. The machine uses direct-drive motor, according to the different requirements of senior civil construction, the use of single-speed or multi-speed drive in the form of low-noise exhaust fan, exhaust ventilation to achieve when using a high-temperature exhaust and fire purposes, with a horizontal or vertical direction can be installed features. The products are widely applicable to senior civil, oven, tunnels and other underground garage occasions, both as ventilation, can also be used to do the amount of wind blowing smoke exhaust fans should be required to increase airflow value of not less than 10% to 20% surplus amount. Low-noise exhaust fan, the Swiss mechanical and electrical liter (certified), Hubei exhaust fan ventilation and air conditioning provided by the Swiss liter Electrical Equipment Factory. L Rui HVAC Electrical Equipment Factory (www.dzsrxfkt.com) is a leader in Dezhou, fans, ventilation equipment, over the years, the company is implementing the scientific management, innovation and development, the principle of honesty and trustworthiness, and satisfy customer needs. L Swiss leader in mechanical and electrical staff warmly welcome all inquiries negotiations to create liter Swiss electromechanical a better future.