During the alignment of the primary air fan for the boiler, it was found that the fan shaft is more than 30 hundredths of a millimeter lower than the motor shaft. What should be done in this situation?
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During the centering of the boiler’s primary fan, it was found that the fan shaft was more than 30 threads lower than the motor shaft (likely due to settlement of the fan foundation). What should be done without moving the fan foundation?
The base can be turned, or the motor base can be turned
You can resolve the problem of misalignment between the fan shaft and the motor shaft by adjusting the height of the motor mount. The specific steps are as follows: 1. Add shims under the motor’s support in order to lower the position of the motor shaft so that it aligns with the fan shaft. 2. After installing the shims, check again whether the two shafts are concentric, and make fine adjustments to ensure precise alignment. 3. After completion, conduct a trial run to check for any abnormal vibrations or noises. This allows the motor to be adjusted without moving the fan foundation, in order to achieve coaxial alignment of the two shafts. .
Thank you very much for your suggestions. Could you please elaborate on the first one? Thank you!
Of course. Detailed explanation of the first recommendation: 1. First, turn off the motor and fans, ensure that all equipment is stopped, and cut off the power supply to guarantee safety. 2. Next, check the motor’s support. Typically, motor mounts have adjustable screws or bolts to fix the motor’s height. 3. If there are no shims under the motor mount, you need to prepare some metal shims of an appropriate thickness. The size and shape of these gaskets should match those of the motor mounts, and their thickness should be around 30 wires (millimeters); the exact thickness depends on the height difference between the two shafts. 4. Then, loosen the screws or bolts that hold the motor in place slightly, just enough to allow you to insert a gasket under the motor mount. 5. After placing the shims, perform a balance check on each support to ensure that the motor can stand steadily after adjustment, without tilting or becoming unstable. 6. After placing the shims, tighten the screws or bolts that secure the motor again to ensure it is firmly fixed in place. 7. Finally, use professional tools to measure the concentricity of the two axes once again, to ensure that the motor axis has been lowered to the same level as the fan axis. By following these steps, you can adjust the height of the motor so that its shaft is concentric with the fan shaft, thereby resolving problems caused by foundation settlement. I hope these steps can help you! .
Your answer is wrong; the motor voltage is high, and a fan should be used as a buffer
:handshake:handshake
Visible only to you – what do you mean by your reply?
The fan is below the motor; per the client’s requirement, the fan cannot be moved, so only the motor can be lowered