Case Study / Troubleshooting of Pump
Case Study 1 : Severe Vibration on Pump
The issue at hand concerns severe vibration experienced by the pumps while operating, which persists until the unit are shut down. Those pumps with high vibration are the VS-4 type vertical sump pumps and they are fabricated with extended shafts of 2 meters in length. According to the pump's nameplate, it is designed to deliver a rated flow of 10.8 m3/h at a head of 22 meters. Unfortunately, those pumps had experienced a breakdown after 6 months of operation.
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Case-Studies Relating to Pump Issues
With over 30 years of experience in providing training and conducting commissioning for centrifugal and process pumps, our observations reveal that more than 95% of issues stem from operational negligence or system-related problems like dry-running, cavitation due to air-lock or air-ingression, insufficient NPSHa (Net Positive Suction Head available), misalignment of flexible coupling, and pipe stress are common challenges encountered. Remarkably, less than 5% of problems are attributed to product or manufacturer defects.
To enhance the longevity of pumps and minimize costly production shutdowns, we aim to share our extensive experiences. Our focus is on equipping users and operators with comprehensive pump knowledge and the correct operating procedures. Our expertise extends beyond centrifugal and process pumps to include vacuum pumps and systems. Through case studies, analysis, and solutions, we strive to contribute to the improvement of pump performance and reliability in various industrial settings.
The following shows several examples of the pump issues that our customers confronted in the past:
