Centrifugal fan is a complex equipment, mainly composed of air inlet, air valve, impeller, motor and air outlet. Under different conditions, the effect of centrifugal fans is also different. Therefore, different parts of the operation do not agree, the effect of centrifugal fans will be affected. Therefore, the centrifugal fan can be debugged to the best condition. It can start from many aspects. Next, let the centrifugal fan manufacturer share some common debugging methods for you.
1, the centrifugal fan promises full pressure starting or depressurization, but it should be noted that the current of the full pressure starting is about 5-7 times the rated current, the starting torque is proportional to the square of the voltage, and when the capacity of the power grid is insufficient, the starting of the pressure lowering should be selected.
2, when the centrifugal fan is in trial, we should read the product instructions carefully to see whether the wiring method is in accordance with the wiring diagram; it should be carefully checked whether the operating voltage of the supply fan power is in conformity with the requirements, whether the power supply is missing or the same phase, and whether the capacity of the components of the electrical appliance is in conformity with the requirements.
3、试车时人 数不少于两人，一人操控电源，一人观察风机工作状况，发现异常现象当即停机查看；首要查看旋转方向是否正确；离心风机开端工作后，应当即查看各相工作电流 是否平衡、电流是否超越额定电流；若有不正常现象，应停机查看。工作五分钟后，停机查看风机是否有异常现象，承认无异常现象再开机工作。
3, the number of people in the test is not less than two people, one person manipulates the power supply, one person observes the working condition of the fan, and finds out the abnormal phenomenon immediately to see if the rotating direction is correct. After the centrifugal fan begins to work, it should be to see whether the current is balanced or whether the current is beyond the rated current; if there is no normal current, it is abnormal. The phenomenon should be stopped to check. After working for five minutes, stop to check if there is any abnormal phenomenon of the fan, admit that there is no abnormal phenomenon and then start the work again.
4, when the double speed centrifugal fan is test, we should start the low speed first to see whether the rotation direction is correct; it is necessary to start at high speed when the fan is stopped, so as to prevent the high speed reverse rotation and cause the switch trip and motor damage.
5. When the centrifugal fan reaches the normal speed, it is necessary to measure whether the input current of the fan is normal, and the working current of the centrifugal fan can not exceed its rated current. If the working current exceeds its rated current, check whether the supply voltage is normal.
6. The power required by the centrifugal fan is larger than that required for the centrifugal fan and fan box when the inlet is fully opened under certain conditions. If the intake port is fully open, the motor is at risk of damage. When the fan is in test, it is better to close the valve on the inlet or outlet pipe of the fan. After working, the valve will be opened gradually to the required condition, and whether the working current of the fan exceeds the rated current.
According to the above debugging method, the centrifugal fan can be adjusted to make the centrifugal fan more efficient than 98%.
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