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Number of search results: 22

Help Customers Save Energy & Money with Power Drive Systems

New study shows major savings potential with power drive systems on commercial pumps

  • December 2020
  • Number of views: 7510
  • Article rating: 4.0
FREE for Members of EASA
Webinar recording

While adding variable speed capability in commercial buildings is not a new idea, a new analysis confirms major energy and cost savings is available by pairing those products with a power drive system (PDS) – regardless of a pump’s load variability. A PDS combines an electric motor, adjustable speed controls and sensors that provide feedback to the equipment, allowing the equipment to slow down or speed up to meet current demand. This idea and the added flexibility a PDS can provide may be even more important as we move forward in uncertain times.

Natural Frequency Testing – Bump Tests and Modal Analysis

  • October 2020
  • Number of views: 9102
  • Article rating: 4.8
FREE for Members of EASA
Webinar recording

Anyone dealing with installed machinery, or even test running motors in the service center, will encounter instances where structural resonance is amplifying machine vibration. The machine may meet stringent specifications in one instance but exceed acceptable vibration levels in another. A good understanding of natural frequencies and the tests necessary to identify them will help solve these vexing situations.

Pump Reliability Essentials

  • July 2020
  • Number of views: 5910
  • Article rating: 2.0
FREE for Members of EASA
Webinar recording

The EASA Pump Reliability Seminar is a two-day program that describes in detail the factors related to pump reliability. This webinar introduces participants to those factors and how they come together to ensure a reliably operating pump.

Assessing Impeller Damage

  • May 2019
  • Number of views: 3089
  • Article rating: No rating
Webinar recording

The impeller is generally the most difficult pump component to repair and the most expensive to replace. This session will look at case histories of failed pumps and the steps to determine the cause of failure.

Vertical Turbine Pump Shaft & Bearing Types, Fits and Clearance

  • November 2018
  • Number of views: 7798
  • Article rating: 4.5
Webinar recording

This presentation covers:

  • Shaft material and specs
  • Shaft coupling types
  • Machining for shafts
  • Bronze, plastic, graphite and cutlass bearing options
  • Bearing clearance concerns and reference data 
  • Bearing housing fits

ANSI's New Shaft Alignment Standard

  • July 2018
  • Number of views: 4610
  • Article rating: No rating
Webinar recording

This presentation introduces you to ANSI's new shaft alignment standard.

Using Variable-Speed Drives to Improve Pump System Efficiency

  • May 2018
  • Number of views: 2348
  • Article rating: No rating
Webinar recording

This presentation discusses:

  • Potential savings for pump operations
  • How service centers can profit
  • Identifying system benefits

Vertical Turbine Pump Shaft Journal Bearing Material, Types and Clearances

  • December 2017
  • Number of views: 2732
  • Article rating: No rating
Webinar recording

The rules of thumb often applied to journal bearings in horizontal machines don’t apply to vertical machines. Vertical turbine pumps are a common example.

Troubleshooting Pump Performance Problems

  • May 2017
  • Number of views: 5413
  • Article rating: No rating
Webinar recording

This presentation covers hHow to determine if a pump is operating properly and differentiating a pump problem from a system problem.

The Basics: What You Should Know about Pump Cavitation

  • December 2016
  • Number of views: 2596
  • Article rating: No rating
Webinar recording

This presentation covers: 

  • What is classic pump cavitation?
  • The NPSHA – NPSHR relationship
  • How to identify the evidence of cavitation
  • Other types of cavitation

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



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.


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.



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.