Open Search

EASA's private webinars

Displaying 1 - 5 of 49 private webinars available

AC Motor Redesign: Speed Changes

This webinar will focus on AC motor redesigns involving speed changes. Service centers encounter scenarios such as the procurement of a single-speed motor that must be redesigned for two speeds or redesign of an existing two-speed motor for use on an adjustable-speed drive.

Topics covered will include:

  • Single-speed, one-winding to two-speed, one-winding
  • Single-speed, one-winding to two-speed, two-winding
  • Two-speed, two-winding to single-speed, one-winding
  • Two-speed, one-winding to single-speed, one-winding

The redesign examples will be performed using EASA’s AC Motor Verification & Redesign program, including use of the soon-to-be released integrated motor winding database for locating comparative data. Examples will include other changes such as voltage, frequency and horsepower.

Topic(s): AC, Theory & design

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.

Who should attend
This seminar will be most useful for service center and field technicians involved in the repair of DC machinery, service center managers, engineers, or anyone involved in DC motor or generator repair, as well as those who are simply looking to expand their understanding.
Topic(s): DC

Advanced DC Testing

This webinar will share tips that are not covered in "Fundamentals of DC: Operation and Repair Tips", such as:

  1. Tips for interpreting armature and interpole tests
  2. Finding that ground in the newly rewound armature
  3. Interpreting questionable drop test results

It will also cover final assembly tests including how to determine whether the cause of sparking is the interpoles or the armature.

Who should attend

This webinar is aimed at the experienced technician and supervisor.

Topic(s): DC

Assessing Impeller Damage

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

  • Erosion, corrosion, cavitation or wear: What happened to this impeller?
  • How to spot the tell-tale signs
  • What operational conditions led to impeller damage

Topic(s): Mechanical, Pumps, Root cause failure analysis

Balance Quality Requirements of Rigid Rotor—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.

Topic(s): Balancing