Installation and use: 1) can be vertical, horizontal and hanger installation. Fan base must naturally be combined with basal plane, and not to beat coupling force base, the weight of the pipeline must not be applied to the turbine components. 2) should be carefully checked before installation whether the impeller and the casing due to transport damage and deformation, if any, should be repaired before installation. 3) Check for loose bolts, electrical insulation is good, whether the goods hinder the rotation within the fan duct. 4) After you install the fan to make a trial run, abnormal rub, touch and vibration to be excluded immediately. Two-speed exhaust fan is increasingly used in high-level basement, garage ventilation exhaust work, then the installation must pay attention to the normative exhaust fan wiring method of use, the size of the series today, you say something about it Wiring two-speed fan: Large two-speed exhaust fan wiring methods: In general, the distribution of electrical power in the following 4KW Y wiring; 4KW or more (including 4KW) △ connection. Large air-conditioned two-speed fan of the group with double speed motor stator winding is △ / YY (or Y / YY) connection. Two-speed exhaust fan control principle: The Company two-speed fan motors which are equipped with double quick set stator windings △ / YY (or Y / YY) connection exhaust fan principle, the basic principles of speed by changing between the stator windings connection method to change the number of poles in order to achieve the purpose of speed exhaust fan maintenance, low-speed work for △ (or Y) method; high-speed operation mode is YY. Wind the electrical control box with circuit breaker, protection devices and other electrical components, according to the fan must be properly reasonable matching the rated capacity. Exhaust fan is well known, a large amount of smoke and heat fire, and consume large amounts of oxygen. On its hazards, particularly at night to smoke, smoke contains many toxic elements, even though non-toxic, can also lead to hypoxia due to combustion asphyxiation death. Every fire accidents in the burned persons, most are also the first to be smoked fainted after being burned when the fire smoke spread fast, level up to 0.5-0.8m / s, vertical up to 6-8m / s. In the fire, the one fire, and then a smoke control. Is off the fire extinguishing, broken smoke source, smoke control system was to provide safe passage to escape, and to facilitate the initial fire; smoke control system is referred to as the smoke and smoke two parts. Today, while the height of high-rise buildings, but also the depth development of space, underground development, and high-rise buildings in the basement, the smoke control system is very important. The design of the unit concerned, we should pay attention to prevention in the design, exhaust design. Exhaust fan models, exhaust fan, air conditioning provided by Chen Yu Chen Yu Wu City Air Conditioning Equipment Co., Ltd. Wu Cheng Chen-yu air-conditioning Co. (www.wccykt.com) strong, credible, Shandong Texas 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 into the brilliant air conditioning and you work for a better future!