Private webinar offerings

Have you had a chance to participate in one of EASA’s Webinars? They’re great training opportunities on subjects developed especially for service center employees. Since the visuals are delivered by the Internet and audio delivered by phone, they’re cost-effective and convenient.

We’ve found EASA’s private Webinars to be very beneficial for training our people. We’re able to schedule training in an area we feel is needed at a time that is convenient for us.

David Griffin
CPM Engineering, Ltd. in Manchester, England, UK

Topics currently being offered

Adjusting Brush Neutral

This session will demonstrate how to set brush neutral in DC machines. Several methods, with the benefits and drawbacks of each, will be explained. This webinar includes tips for permanent magnet and series-wound machines. Included will be tips on how to recognize problems and settings that affect brush neutral, and what to check if the neutral adjustment seems higher than usual.

Balance Quality Requirements of Rigid Rotors — Applying ISO 1940/1

When is a machine rotor or armature balanced “good enough” and how does that relate to how smoothly the machine runs? How much a machine will vibrate (or how smoothly it will run) depends on quite a number of variables besides balance.

This webinar will provide valuable and practical information on this topic. Additionally, it will cover balance quality grades and how to determine if a rotor meets the appropriate grade as well as some of the factors that affect the final vibration level.

Belt Loads

This session will address the impact of overhung loads on bearing life. Critical factors include belted horsepower, belt tension, sheave sizes and sheave location. The use of ball bearings versus roller bearings will be considered as well as the factors that affect that decision. Not all belted loads should be roller bearings! Methods to calculate the bearing load and maximize life of the bearings will be shown.

DC Theory

This webinar describes, in practical terms, how a DC motor works. Working with basic principles of attraction-repulsion and magnets, the operation of a DC machine is explained without mathematical formulas. Some of the principles to be explained include:

  • the role of interpoles
  • armature coil pitch
  • the interaction of fields and armatures to create rotational torque
  • interpole polarity
  • brush neutral
  • compound-wound fields

Dealing with Shaft and Bearing Currents

This session will address key issues related to shaft and bearing currents in electric motors and generators. Critical topics that will be covered include recognizing symptoms of shaft and bearing currents, and determining if damaging current levels are present. Also, possible causes of the damaging current, such as machine dissymmetry and operation on variable frequency drives (VFDs) will be dealt with. Methods of testing to confirm the presence of shaft or bearing currents will be described, as well as how to assess the magnitude of the damaging currents. Further, solutions to eliminate or control shaft and bearing currents, such as insulators, isolators, and ceramic bearings, will be offered.

Drop Testing of Fields and Synchronous Poles: Tips to Interpretation

This session will cover the basics of drop testing, as well as offer tips for interpreting the results. Both the AC and DC drop test methods will be described as well as the advantages and drawbacks for each. For those cases where the drop test results are out of tolerance, this material will guide the technician in determining the reason for the variation—how to recognize the difference between shorted coils and differences in iron, airgap or other influences. Rewind and assembly tips will also be discussed, where they influence the results of a drop test.

Final Testing of DC Machines

To assure a quality repair, there are specific tests (such as neutral-setting and interpole-armature polarity) that should routinely be performed on every DC machine. When done correctly, the simple procedures presented in this session will prevent scenarios such as that late night phone call from an irate customer whose DC machine is “arcing like a fireworks show.”

Pump Cavitation

Cavitation is one of the most damaging forces to centrifugal pumps. Understanding the causes, symptoms and solutions for cavitation is essential to service technicians and engineers. This webinar will "bring you up to speed" on cavitation in centrifugal pumps.

Quick Pump Curves: How to Read Them

This webinar will take the mystery out of pump curves and provide attendees with the necessary knowledge to determine pump operating points, efficiency and horsepower. The elusive parameters that determine if a pump is likely to cavitate will also be discussed.

Repair Best Practices to Maintain Efficiency

There are certain repair processes, such as winding removal and replacement, that can impact the efficiency and reliability of electric motors. Prudent repair practices must not increase overall losses, and preferably should maintain or reduce them. This session will explain how those repair processes affect efficiency and reliability; and presents the best repair practices in order to maintain or improve efficiency.

Repair/Replace: When the Decision is Replace

The subject of the repair option in the repair/replace decision process has been dealt with frequently. However, the topic of what to do when the decision is to replace is rarely if ever addressed. This session is intended to help fill that void.

The main topics to be covered include:

  • Selecting the right motor for the application
  • Dealing with usual and unusual electrical and mechanical conditions
  • Preventing problems by recognizing the cause(s) of the original motor failure
  • Adding value by providing additional features and offering services to increase the reliability of the replacement motor

Rewinding Tips for Premium-Efficient Motors

Premium efficient motors and inverter-fed motors have a couple of things in common: more iron for lower flux densities and more copper for lower copper densities. This Webinar will outline tips for successfully rewinding premium efficient motors without compromising their efficiency, and for rewinding inverter-fed motors so they will last. This session is most helpful for those with a hands-on background in motor winding.

Strength and Characteristics of Motor and Pump Shaft Materials

Most service center technicians and managers know the general properties of a few common grades of steel used for motor and pump shafts. This webinar will expand that knowledge by defining the important parameters of a range of steel grades and how they affect performance. The affects of thermal treating and basic metallurgical terminology will also be presented.

Submersible Pump Cable Entries and Seals

"Water finds a way." The quote may be anonymous but that is the reality for anyone working with submersible pumps. Sometimes neglected, the cable entry point can be a source of moisture entrainment that leads to damp windings and ground failures. This webinar will address this important link in sealing submersible pumps.

Techniques for Straightening Pump Shafts

The slender dimensions of many pump shafts make them susceptible to distortion, which affects pump performance and reliability. This webinar will present a methodical approach and effective techniques for measuring and correcting shafts which are bent or twisted.

Unusual Winding Connections & Layouts

Unusual winding connections can create real headaches if they aren’t correctly identified when the data is taken. And the time required to “get it right the second time” comes directly off your bottom line.

This Webinar will cover:

  • equalized connections
  • odd grouping
  • interleaved and interspersed windings
  • part-salient, part-consequent connections

Vertical Bearing Systems and Setting End Play

This session will look at various configurations of vertical motor thrust bearing arrangements. We will also discuss the reason for having or not having end play, what that end play should be and how to get there. Some pitfalls of setting end play such as internal bearing clearance, spring loaded bearings and back to back bearing sets will also be examined.

Want to book a private webinar?

To schedule private education for your group, contact:

Dale Shuter, CMP
Meetings & Expositions Manager
314-993-2220, Ext. 3335
E-mail: Dale Shuter

How a webinar works

All EASA Webinars are live events in which the audio is presented via toll-free telephone and the visuals are simultaneously transmitted over the Internet. Prior to the program, you will receive a toll-free telephone number for the audio portion, as well as a Web link and access code for the visual content. The presentation portion of the Webinar will last about 45 minutes, followed by about 15 minutes of questions and answers. During the question and answer portion, you will have the opportunity to ask questions.

What do I need to access a webinar?

To participate in the live Webinar, you will need:

  • a touch-tone telephone
  • a computer with Internet access
  • a compatible Web browser with Flash

A toll-free phone number for the audio portion of the Webinar is included with your registration fee (one phone connection per site). Web conferencing services will be provided by ReadyTalk.

Before registering for an EASA Webinar, please check to make sure you have:
- A supported computer system
- A compatible Web browser (run test)

To view a Webinar recording, you will need:

  • a computer with Internet access and sound playback capability
  • a compatible Web browser with Flash