How to adjust the tunnel fan to the best status?

Tunnel ventilation fan is currently one of the most widely used ventilation and exhaust equipment in industrial production, but due to the influence of professional knowledge, many business owners often ignore it once it is installed. In fact, under different conditions of the tunnel fan, the effect can be different. Therefore, how to debug so that the tunnel fan can be in the best state is very important.

1. The fan allows full-voltage starting or step-down electric, but it should be noted that the current at full-voltage starting is about 5-7 times the rated current, and the step-down starting torque is proportional to the voltage square. When the grid capacity is insufficient, the fan should be Start with reduced voltage.

2. When the tunnel fan is commissioned, carefully read the product manual and check whether the wiring method is consistent with the wiring diagram; carefully check whether the working voltage of the power supply to the fan meets the requirements, whether the power supply is out of phase or in the same phase, Whether the capacity meets the requirements.

3. During the test run, there should be no less than two people. One person controls the power supply, and one person observes the operation of the fan. If any abnormality is found, the machine will immediately stop and check. First, check whether the rotation direction is correct. Whether the current exceeds the rated current; if there is any abnormal phenomenon, stop and check. After running for five minutes, stop the fan to check whether there is any abnormal phenomenon, and confirm that there is no abnormal phenomenon before turning on the machine.

4. When testing a two-speed fan, start it at a low speed and check whether the direction of rotation is correct. When starting at a high speed, you must wait for the fan to stop before starting to prevent high-speed reverse rotation, causing switch tripping and motor damage. Share from Boxing Motexo Industries Co.,Ltd.

5. When the fan reaches normal speed, it should be measured whether the fan input current is normal, and the running current of the tunnel fan cannot exceed its rated current. If the operating current exceeds its rated current, check whether the supplied voltage is normal.