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Tyler Voss Membership & Communications Specialist+1 314 993 2220tvoss@easa.com
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Gene Vogel EASA Pump and Vibration Specialist
For most centrifugal pumps, the shaft has packing or a mechanical seal where the shaft enters the wet end. Fundamentally, a sealless pump substitutes a magnetic drive for the shaft seal. The impeller shaft is fitted with a magnetic rotor which is contained in a thin metal cover. The shaft, impeller, the rotor and the bearings are all “wet” components; that is, they are completely submersed in whatever liquid is being pumped. Over the outside of the magnetic rotor and cover is a magnetic drum which is driven by the power source, usually an electric motor. The magnetic coupling between the rotor and drum delivers torque to the shaft and impeller.
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This 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:
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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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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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Revised May 2024 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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