Wind from the centrifuge is a once-speed motor high pressure centrifugal fan, the pace of the conduction angle adjustable resistance to change by the SCR, then the voltage across the motor is controlled by a thyristor rectifier after arrival, in order to control The purpose of speed, high pressure centrifugal fan motor speed unstable prices, from the principle of the analysis, the following four cases are possible. (1) a four rectifier diodes only problem (2) there is bad in itself, such as toner or brushes customized high pressure centrifugal fan between the motor rotor and commutator, after the first line with the principles of easy repairs difficult, first of all measurements transfer resistance, resistance to adjust and change with the law, to prove the potential is good, and then measure the SCR also found no problems, since the diode is a large current gold sealed tube, one end of the screw fastening the circuit board, Another head with a wire soldered to the board, when the board is removed from, find the positive and negative loosening, and then measuring the side while shaking, confirmed that the diode good times and bad. (3) SCR also a lot of problems with the principle of high pressure centrifugal fan, usually breakdown short circuit, open circuit, can trigger or internal poor contact. (4) adjustable resistance, the situation is due to the adjustable resistor cabinet centrifugal fan mounted on the control panel, using very high frequency, long time, very ordinary poor contact. During operation, if you found the fan speed instability phenomenon occurs, it may point to the above-mentioned four directions as the investigation quickly identify the cause and improve maintenance efficiency. Centrifugal fan is actually a fan of, but in some aspects of the improvements, but in the works are not much different. Then the centrifugal fans and ordinary fans have compared to what advantage? The advantage of this fact, there are a lot of centrifugal fan, that is because of these advantages, centrifugal fan is used in a lot of fans have no way to use some areas. Like centrifugal fan dust effects in terms of let this fan is very popular. Although this centrifugal fan in air volume is not large, there is no way to meet the needs of a number of areas, but the effects in terms of dust becomes more apparent. High pressure centrifugal fan design, nagorye blower (certified), Weihai high pressure centrifugal fan blower provided by the Shanxi nagorye limited liability company. Shanxi nagorye Blower Co., Ltd. (www.sxgfj.cn) is an industry leader in Shanxi Xinzhou, 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. In nagorye blower leadership with the staff warmly welcome all inquiries negotiations to create nagorye blower a better future.