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Trade press article — Pumps & Systems

Making Shaft Lift Adjustments in Vertical Turbine Pumps

Best practices for safe operation and easy accessibility.

June 2020
Number of views: 9680
Article rating: 2.5

Gene Vogel
EASA Pump & Vibration Specialist

Vertical turbine pumps (VTP) commonly have rotors with multiple mixed-flow impellers (sometimes 12 or more) that are supported by a vertical pump motor. Such designs offer a lift adjustment for raising or lowering the pump rotor to properly position the impellers within the bowl. Depending on the type of pump, this may be critical for maximizing pump efficiency and could have a significant impact on motor load (current) and reliability. Given the importance of VTP lift adjustments, it is necessary to recognize that procedures vary with the characteristics of the pump and motor.

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ANSI/EASA AR100

More information on this topic can be found in ANSI/EASA AR100

Section 2: Mechanical repair

Related Reference and Training Materials

Fundamentals of Pump Repair

Section 4: Vertical Turbine Pumps

Categories: Technical topics, Pumps, Articles in industry publications, Pumps & Systems

Tags: Vertical turbine pumps

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Getting The Most From Your Electric Motors

Getting The Most From Your Electric Motors - cover 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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Motor and baseline installation data
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Motor storage recommendations

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EASA/AEMT Rewind Study

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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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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EASA Technical Manual

EASA Technical Manual cover

Revised September 2022
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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