Please see the attached detailed vibration data for the cooler fan at a cement plant. The fan is powered by a V-belt drive and runs at 1162 RPM with a VFD. It has been observed that the vibration on the NDE side of the fan is higher compared to the DE side. Recommendations for addressing this issue are welcome. Download the attachment "Cooler Fan.rtf" for further analysis.
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Hello Pathu, please share a spectrum chart with peak frequency labeling to help us determine the root cause of the issue. Also, provide the motor running RPM. In my opinion, it is important to: 1. Verify belt pulley sheaves alignment and tension. 2. Inspect belt pulley sheaves V-groove profile, as this could result in uneven belt wear, repeated failures, and an increase in vibration levels. This will help us diagnose and address the problem effectively.
Thank you for your response, Mr. Kishor.
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Based on the details you've provided, it sounds like the vibration issue could be due to misalignment or wear in the V-belt drive causing an imbalance in the fan. You might want to inspect the belt for signs of wear and consider realigning it if necessary. Additionally, loose or worn out bearings on the NDE side could also contribute to higher vibration levels. Remember to conduct a vibration analysis after any adjustments to ensure the problem has been properly addressed.
Looking at the data, I'd first suggest inspecting the alignment of the V-belt drive. In my experience, improper alignment can lead to uneven distribution of force, which may cause higher vibrations at one end like the NDE side. Also, consider checking for worn-out parts in the VFD as this could lead to imbalances and therefore increased vibration. Your RPM seems alright, but if other methods fail, you may want to adjust the speed and monitor the vibrations. Hope this helps!
After reviewing your provided data, I wonder if there might be an imbalance issue on the Non-Drive End (NDE) side of the fan? Imbalance tends to increase vibration levels and could be caused by anything from dust accumulation to irregular wear. You could also look at the belt tension and alignment, as well as confirm that your bearings are in good working order. Lastly, consider engaging a predictive maintenance team to perform a detailed analysis, especially if this fan is critical to your operations.
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Answer: 1. Why is the vibration higher on the NDE side compared to the DE side of the cement plant cooler fan? - The higher vibration on the NDE side could be attributed to various factors such as misalignment, imbalance, bearing issues, or structural problems.
Answer: - High vibration levels can lead to increased wear and tear on components, reduced equipment lifespan, decreased efficiency, and potential safety hazards in the plant.
Answer: - Possible solutions may include checking and adjusting the alignment, balancing the fan rotor, inspecting and replacing worn-out bearings, and conducting a thorough structural analysis of the fan system.
Answer: - Vibration data analysis can provide insights into the root causes of vibration problems, help identify specific components or areas requiring attention, and guide maintenance efforts to optimize the fan performance and reliability.
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