Recording vibration makes sense only after good maintenance practices are in force. Mechanical Problem Solutions Balance all of your rotating equipment. If you do not have dynamic balancing equipment in your plant there are contractors and vendors anxious to work with you. Balance is always a problem when you are pumping abrasives, or a slurry, because the rapid wear always destroys balance. In the higher speed pumps this wear can be very severe.
Bent shafts are a problem.
If you can straighten them go ahead and do it, but most attempts are unsuccessful. In the majority of cases you are better off replacing the shaft. Once the conversion is made misalignment ceases to be a concern. These adapters are available for most motors and will maintain the proper alignment as the equipment goes through its normal temperature transients. Always pipe from the pump suction to the pipe rack, never the other way.