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Requirements and Optimum condition of centrifugal Fan Test

Jan 30, 2019

Centrifugal fan is a complicated equipment, which is mainly composed of inlet, air valve, impeller, motor and outlet. In different states, the effect of centrifugal fan is also different. Therefore, different parts of the operation conditions are not uniform, centrifugal fan effect will be affected. The centrifugal fan debugging to the best state, can start from a number of aspects.


The centrifugal fan is allowed to start at full voltage or be powered down, but it is important to note that the current at full voltage starting is about 5-7 times the rated current, and the starting torque is proportional to the square of voltage. When the power network capacity is insufficient, Start by lowering the pressure. The centrifugal fan should read the product specification carefully and check whether the wiring method is in accordance with the wiring diagram. It is necessary to carefully check whether the working voltage of the power supply to the fan is in accordance with the requirements, whether the power supply is lacking in phase or in the same phase, and whether the capacity of the components of the distribution apparatus is in accordance with the requirements.


When the centrifugal fan is being tested, the number of people is not less than two. To a certain extent, one person controls the power supply. One person observes the operation of the fan, finds the abnormal phenomenon and immediately stops to check. First of all, it checks whether the rotation direction is correct, and after the centrifugal fan starts to operate, Check immediately whether the current in each phase is balanced, whether the current exceeds the rated current, and if there is any abnormal phenomenon, stop to check. After five minutes of operation, stop to check if the fan is abnormal and confirm that there is no abnormal phenomenon before starting the machine.www.jnblower.com