Lanzhou Gurley air ventilation and air conditioning equipment, 18298433108 13053466695, we in good faith, committed to every detail. We want a comprehensive understanding of customer needs, develop in line with the interests of customers of the overall solution, and provide customers with superior quality Dingxi centrifugal fan products and services. Pingliang centrifugal fan is divided into two forms, one is the motor outboard, another motor built, according to the use of different places, different operating points selection of different configurations. Dingxi centrifugal fan is widely used in canteens, hotels, restaurants, bars, supermarkets and other ventilation and exhaust, the appearance of beautiful, high-quality color steel panel with surface are, Pingliang centrifugal wind movement, good material for the insulating properties of polyurethane materials Cheng, moisture, corrosion, avoid mold growth, smooth and beautiful appearance, easy installation and maintenance. Dingxi centrifugal fan housing is aluminum alloy frame structure design, high-strength aluminum alloy frame cold bridge aluminum profiles, higher strength and lighter weight. Internal parts of the unit are designed for installation in high-strength framework structure, better stability. Pingliang centrifugal fan unit uses a high-quality bass noise fully enclosed motor, protection class IP55 grade, F class insulation, rotating belt, Dingxi centrifugal ventilation chassis with well-known brands, low noise air flow type, double inlet, smooth operation, the outlet and cabinet between the use of flexible connection, vibration less. Pingliang chassis ventilation centrifugal governor is a DC motor, the speed of change is through an adjustable resistor SCR conduction angle, then the thyristor controlled rectifier voltage across the motor after the arrival, in order to control the speed of purpose, the motor speed instability, from the principle of the analysis, the following four cases are possible. Dingxi centrifugal ventilation chassis allows full pressure start or step-down power, it should be noted, exhaust fan total pressure starting current is approximately 5-7 times the rated current, voltage starting torque is proportional to the square of voltage, when the grid capacity insufficient, should be reduced voltage starting. Pingliang centrifugal ventilation chassis in the test, should carefully read the product manual, check the wiring method is the same wiring diagram; should carefully check the supply Dingxi centrifugal ventilation chassis power supply voltage is not met, the power is phase or in phase with the distribution electrical components of the capacity to meet the requirements. Pingliang centrifugal ventilation chassis starts running, you should immediately check whether the current balance of each phase of operation, the current does not exceed the rated current; if not normal, you should stop to check. After running five minutes, the fan down to check whether there is abnormal phenomenon, confirming that no anomalies start running again.