Pump Alignment Misalignment between motor and centrifugal pump. The motor was bolt bound, and soft foot from poor shimming practice, combined to caused excessive vibration.
Pump Cavitation Centrifugal pump cavitation resulting from insufficient NPSH caused by decreased suction head and increased water temperature.
Compressor Misalignment Misalignment between motor and high speed centrifugal compressor was diagnosed using vibration and oil analysis. The alignment had been performed with the motor off of magnetic center. This resulted in excessive wear on the motor thrust bearing.
Download a free copy of Acrobat Reader.
Last Updated: 08/11/04