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Selection and precautions for external rotor axial fan

  • Categories:Trade news
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  • Time of issue:2023-01-18
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(Summary description)External rotor axial fan selection and matters needing attention

Selection and precautions for external rotor axial fan

(Summary description)External rotor axial fan selection and matters needing attention

  • Categories:Trade news
  • Author:
  • Origin:
  • Time of issue:2023-01-18
  • Views:0

External rotor axial fan selection and matters needing attention

How to choose external rotor axial fan?

1. When purchasing external rotor axial flow air, it is necessary to check whether the axial flow fan will produce strong vibration and friction sound, so as to judge whether the impeller of the axial flow fan is normal. Next, check whether there are impurities in the lubricating oil of the fan bearing and whether new lubricating oil needs to be replaced.

2. In choosing the appropriate external rotor shaft flow machine, we need to consider the actual use place and occasion.

3. Judge the use efficiency of the external rotor axial fan. Under the condition of setting parameters, the fan with good performance can meet the requirements of low noise and compact structure size, and the loss can be reduced to relatively small after the airflow passes through the designed flow channel.

4. After the purchase of the axial fan, observe and start the fan during the first use to check whether the rotation direction of the fan blade is consistent with the direction marked by the rotation mark. After the check, stop the test run for 10 to half an hour to check whether the blade is loose and whether the connecting bolt between the damping seat and the foundation is loose.

What should I pay attention to when using external rotor axial fan?

Check whether the fan rotates flexibly, whether the blade is stuck and frictions, and whether there are tools and impurities in the fan and adjacent pipes. If no problems are found in the debugging process, we can officially use it.

The use effect of fans will be affected by pressure, air volume, power and so on. How to make the fans play a great value under the limited energy depends on how we adjust the fans in use.

Monitoring the motor current, the sign of fan load is not current, so we should pay more attention to the abnormal phenomenon of the fan in use, once the fan vibration, abnormal noise or serious friction, must be solved in time, otherwise the use of axial fan will be greatly reduced.

Maintenance and fault analysis of external rotor axial fan

One: maintenance of external rotor axial fan

1. The fan works only under normal conditions.

2. If the fan is started after maintenance, check whether the fan works properly.

3. Regularly clean the dust, dirt and other impurities inside the fan, and check the tightness of the belt at any time to prevent the belt from being too tight and slipping.

4. Maintain the fan during shutdown.

5. If any abnormal situation is found during the operation of the fan, stop the machine immediately for inspection.

6. In addition to replacing the grease after each disassembly and repair, the grease is generally replaced every three months.

Two: the main failure of external rotor axial fan

1. The fan vibrates violently, the casing or air inlet fricts with the impeller, the rivets of the impeller become loose or deformed, the fan inlet and exhaust pipes are installed incorrectly, causing resonance, dust and dirt on the blades, the impeller deformation shaft is bent, and the rotor is unbalanced.

2. The bearing temperature is too high, the bearing box vibrates violently, the bearing is damaged or the shaft is bent, and the grease is of poor quality or contains impurities.

3. The motor current is too large, the temperature rise is too high, when starting, the inlet and outlet pipes are not closed, the input voltage is too low or the single-phase power supply is cut off, the spindle speed exceeds the rated value, the input medium density is too high or the temperature is too low.

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