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Using Vibration Analysis To Identify & Help In …

Using Vibration Analysis To Identify & help Correct An ID Fan Foundation Problem Barry T. Cease Cease Industrial Consulting Charleston, SC MACHINE & PROBLEM DESCRIPTION Large induced draft fan, directly driven by a VFD controlled induction motor. Normal operating speeds were from 500 900 rpm with most typical being 600 800 rpm. Job began with a call to balance this fan. Others had tried unsuccessfully to balance it in the past. Plant had run the motor solo prior to my arrival and solo motor levels were significantly lower leading us to believe the problem wasn t the motor. 2 Cease Industrial Consulting - Correcting An ID Fan Foundation Problem PHOTO OF FAN FROM REAR 3 Cease Industrial Consulting - Correcting An ID Fan Foundation Problem ON-SITE INSPECTION & INITIAL DATA, p1 Prior to any Vibration measurements, on-site inspection of the B fan during operation noted significant movement/ Vibration at the fan & motor bearings but also at the concrete foundation surrounding the entir

Using Vibration Analysis To Identify & Help Correct An ID Fan Foundation Problem Barry T. Cease Cease Industrial Consulting Charleston, SC barrycease@bellsouth.net

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