Method of debugging centrifugal fan (2)
Mar 19, 2020
1 When the double speed centrifugal fan is tested, it should start the low speed first, check whether the direction of rotation is correct; when starting the high speed, it must wait for the fan to rest before starting, so as to prevent the high speed reverse rotation and cause the switch tripping and the motor damage.
2When the centrifugal fan reaches the normal speed, it should be measured whether the input current of the fan is normal or not, and the operating current of the centrifugal fan can not exceed its rated current. If the operating current exceeds its rated current, check that the supplied voltage is normal.
3 The motor power required by centrifugal fan refers to the large power required when the air inlet is fully for centrifugal fan and fan box under certain working conditions. If the inlet is fully open for operation, the motor is at risk of damage. When the fan is tested, it is best to close the valve on the inlet or outlet pipe of the fan, and gradually open the valve after operation, until the required working condition is reached, and pay attention to whether the operating current of the fan exceeds the rated current.
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