Plastic mechanical centrifugal fan allows full-voltage start or step-down motor when operating, its current is about 5 times the rated current at full-voltage start-up, and the step-down starting torque is in direct proportion to the square of the voltage. When the grid capacity is insufficient, step-down start should be adopted.
During the test run, the plastic mechanical centrifugal fan needs to carefully read the instructions of the product, and when the operation is carried out, it is necessary to check whether the wiring method is in line with the wiring diagram. Check whether the working voltage of the power supply of the supply fan meets the requirements, and whether the power supply is in phase or in phase. Whether the capacity of the electrical components is in accordance with the requirements.
In the test run of plastic machinery, the number of centrifugal fans is not less than two, to a certain extent, one person controls the power supply, one person observes the operation of the fan, and finds out the abnormal phenomena immediately stop and check; first, check whether the rotation direction is correct; After the centrifugal fan starts operation, it should check whether the current of each phase is balanced and the current exceeds the rated current immediately. If there is any abnormal phenomenon, it should stop and check. After 5 minutes of operation, stop and check fan for abnormal phenomenon, confirm no abnormal phenomenon and start operation again.www.jnblower.com