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Learning from experience: Tips for repairing a "purpose-built" motor

  • December 2018
  • Number of views: 3786
  • Article rating: No rating
Article

I suspect that just about everyone in our industry at one time or another has had the joy of repairing a “purpose-built” motor. This kind of motor is built for a specific purpose and has characteristics that may allow it to operate under non-standard conditions. Due to the limited information that some of them display on the nameplate, the repair of these motors can be somewhat of a challenge. Sometimes these motors possess differences such as the color of paint, the shaft size, the bearing size, or type. It can be the operating temperature and at times it can be the motor in its entirety. Following are a few useful tips we use when repairing a motor with so many question marks.

Training Film 2: Disassembly of a Three-Phase Induction Motor

  • June 1984
  • Number of views: 1742
  • Article rating: 5.0
Video

Shows step-by-step disassembly of a TEFC motor with the proper tools to use, how to mark parts for proper reassembly, how to remove ball bearings from shaft. Details things not to do. Does not include stripping.

Training Film 16: Disassembly of a DC Machine

  • June 1983
  • Number of views: 1201
  • Article rating: No rating
Video

Shows step-by-step disassembly of a DC motor and the tools to use. Demonstrates how to mark parts, and how to label and record connections for use in assembly. Also explains how to check for shorts or opens in field and armature windings, how to test run the motor, and how to inspect parts for damage and wear.

Getting The Most From Your Electric Motors

Getting The Most From Your Electric Motors - coverThis 40-page booklet provides great advice for obtaining the longest, most efficient and cost-effective operation from general and definite purpose electric motors.

This booklet covers topics such as:

  • Installation, startup and baseline information
  • Operational monitoring and maintenance
  • Motor and baseline installation data
  • How to read a motor nameplate
  • Motor storage recommendations

LEARN MORE AND DOWNLOAD MÁS INFORMACIÓN Y DESCARGAR BUY PRINTED COPIES

READ MORE ABOUT THE FEATURES AND BENEFITS

EASA/AEMT Rewind Study

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.

DOWNLOAD THE FULL RESULTS

ANSI/EASA AR100-2020

ANSI/EASA AR100-2015 cover

Recommended Practice for the Repair of Rotating Electrical Apparatus
This is a must-have guide to the repair of rotating electrical machines. Its purpose is to establish recommended practices in each step of the rotating electrical apparatus rewinding and rebuilding processes.

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DESCARGAR - ESPAÑOL

EASA Technical Manual

EASA Technical Manual cover

Revised May 2021
The EASA Technical Manual is the association's definitive and most complete publication. It's available FREE to members in an online format. Members can also download PDFs of the entire manual or individual sections.

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