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ANSI/EASA AR100-2020 cover

ANSI/EASA Standard AR100-2020
ANSI/EASA AR100-2020: Recommended Practice for the Repair of Rotating Electrical Apparatus is a must-have guide to the repair of rotating electrical machines. It establishes recommended practices in each step of the rotating electrical apparatus rewinding and rebuilding processes.

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Questions?

For information about ANSI/EASA AR100 or questions about the work on this standard, contact:

Mike Howell, PE
EASA Technical Support Specialist
+1 314 993 2220
mhowell@easa.com

ANSI Accredited Standards Developer Information

Why Pumps Fail

  • June 2020
  • Number of views: 12487
  • Article rating: No rating
Recording duration: 62 minutes

Gene Vogel
EASA Pump & Vibration Specialist

Centrifugal pump failures are most commonly attributed to seal failure, impeller damage and bearing failures. A good understanding of failure modes for seals, impellers and bearings is essential to providing customers with reliable pump repairs. This presentation will explore various failure modes and provide some direction on ways to avoid them.  

  • How mechanical pump seals operate, the importance of seal face material selection and proper installation techniques 
  • Impeller damage examples and causes 
  • General rolling element bearing failure modes 
  • Bearing failure modes unique to vertical turbine pumps and associated vertical motors 

This recording will be useful for service center engineers, pump technicians and operations managers.

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EASA Technical Manual

More information on this topic can be found in EASA's Technical Manual
  • Section 8: Bearings

Related Reference and Training Materials

Principles of Medium & Large AC Motors (NEMA Standards)
  • Section 10: Bearings & Lubrication

Principles of Medium & Large AC Motors (IEC Standards)
  • Section 10: Bearings & Lubrication

Root Cause Failure Analysis
  • Section 2: Bearing Failures

Mechanical Repair Fundamentals of Electric Motors
  • Section 6: Bearing Housing, Shaft Openings, Seals & Fits

Fundamentals of Pump Repair
  • Section 1: Nomenclature
  • Section 2: General Pump Repair Procedures
  • Section 3: Submersible Pumps
  • Section 7: Seals
  • Section 8: Pump Reliability

Tags: Pumps Root cause failure analysis Pump seals
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EASA Rewind Study cover

The Effect of Repair/Rewinding on Premium Efficiency/IE3 Motors
Tests prove Premium Efficiency/IE3 Motors can be rewound without degrading efficiency.

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EASA Good Practice Guide

Good Practice Guide to Maintain Motor Efficiency
Based on the 2019 and 2003 Rewind Studies of premium efficiency, energy efficient, IE2 (formerly EF1) and IE3 motors

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