A comprehensive failure analysis was conducted on a Goulds 3296 EZMAG magnetic drive pump following operational issues. The investigation was performed by our engineering team.
Failure Analysis Findings
The inspection revealed several critical issues related to extended dry run operation:
- Containment Shell: Exhibited clear evidence of extreme heat exposure
- Driven Magnet: Complete loss of magnetic properties with visible heat-related discoloration
- Cartridge Bearing Assembly: Significant heat discoloration observed
- Silcar Bearings: Bearings had spun within their housing, indicating severe operational stress
Root Cause Of Goulds 3296 EZMAG Failure
Based on the physical evidence, it was determined that the pump had been operating without proper fluid flow for an extended period. This dry run condition created excessive heat, leading to progressive component damage and ultimately complete pump failure.
Preventative Measures
Our analysis identified that this failure could have been prevented through appropriate monitoring systems. Specifically, a dry run monitoring system mounted in the motor starter panel would have:
- Continuously tracked motor load parameters
- Automatically shut down the pump upon detection of dry run conditions
- Prevented catastrophic component failure
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