Mike Howell, PE
EASA Technical Support Specialist

Existing machines have finite space for placing form coil windings. When a rewind is necessary, EASA members strive to ensure that the methods, techniques and materials used will maintain or improve energy efficiency without sacrificing reliability. This discussion will include: 

• Slot fill geometry and generic procedures 
• End winding geometry and generic procedures 

Target Audience: This webinar is intended for all personnel who rewind medium voltage stators. 

Presented by Gene Vogel
EASA Pump & Vibration Specialist

The wear ring clearance in a centrifugal pump is a critical factor in the efficiency of the pump. The repair process often includes replacement of casing and impeller wear rings. The topic of this webinar is ensuring the proper clearances, materials and installation process for centrifugal pump wear rings.

Primary topics are:

• Determining if the wear ring as-found condition is acceptable
• Recommendations for wear ring clearances if manufacturer’s data is unavailable
• Consideration of possible material selection for replacement wear rings
• Tips for installing replacement wear rings

This webinar is intended for pump technicians, engineers, supervisors and managers. The content will be beneficial for persons of all skill levels.
 

Presented by Tom Bishop, PE
EASA Senior Technical Support Specialist

One of the most frequent member requests to EASA’s technical support group is for the conversion of a 3 phase winding from concentric to lap. The emphasis in this session will be to cover the important details for a proper concentric to lap winding conversion.  

Primary topics are the most common methods for concentric to lap conversion:

• “Rule of thumb”
• Concentric to lap conversion tables in EASA Technical Manual
• EASA AC Verification and Redesign (ACR) computer program
• Hand/manual calculation

This webinar is intended for winders, engineers, supervisors and managers. The content will be beneficial for beginners through highly experienced persons.

Carlos Ramirez
Especialista de Soporte Técnico de EASA

Este webinario demuestra que un horno temporal de fácil fabricación se puede construir in situ o en el centro de servicio. 

La presentación abarca:

• Materiales a utilizar y dónde obtenerlos
• Calefacción: ¿eléctrica, propano, otra? 
• Medición de la temperatura del bobinado
• Regulación de la temperatura del horno
• Almacenamiento de las partes cuando no se utilizan
• Cuidados y precauciones de seguridad

Este webinario es útil para supervisores y gerentes de los centros de servicio.

Ron Widup
Shermco Industries, Inc. 

This is a encore presentation of the session held recently at the EASA 2025 Convention
in Nashville, TN

Are you keeping up with the changing landscape of electrical standards affecting you and your customers? This webinar will provide a practical overview of applying both NFPA 70E (electrical safety) and 70B (electrical maintenance) standards to field and shop operations. This presentation will: 

• Examine how to use and implement these standards practically to minimize risks and improve operational safety 
• Focus on the impacts to both shop and field personnel 
• Provide insights into recent changes and requirements including: 
• Basic hazard assessment 
• Highlights of safe work practices 
• Applying electrical maintenance strategies 

This is a “don’t miss” webinar that will provide real-world guidance to these often misunderstood industry standard.

Presented by Mike Howell, PE
EASA Technical Support Specialist

This will be an encore presentation of a January 2018 webinar and will cover the following topics.

• Induction motor basics for operation
• Squirrel-cage
  • Conductor material
  • Deep-bar effect
  • Multiple-cage windings
  • Phase resistance
  • IEC/NEMA design letters
  • Speed-torque characteristics
• Wound-rotor
  • Winding construction
  • Wave-wound connections
  • Distribution factor and chord factor
  • Rotor phase voltage
  • Speed-torque characteristics

This webinar will benefit service center technicians and supervisors.

Tom Bishop, PE
EASA Senior Technical Support Specialist

Two types of pulleys will be discussed in this webinar, quick detachable (QD) and taper lock. Instructions for installing and removing both types will be provided. Multiple pulley manufacturer instruction manuals were reviewed and the material in this session seamlessly combines their information. 

Primary topics are: 

• QD (quick detachable) type pulley installation 
• QD type pulley removal 
• Taper lock type pulley installation 
• Taper lock type pulley removal 

Target Audience: This webinar is intended for mechanical technicians, field service technicians, engineers, supervisors and managers. The content will be beneficial for beginners through highly experienced personnel. 

Mike Howell, PE
EASA Technical Support Specialist

Partial discharge is a common aging mechanism in medium voltage stator windings. The significant presence of partial discharge in a winding may be an acceptance criterion after manufacture. It can also be a condition monitoring tool used to assess the health of windings.  This discussion will include: 

• What partial discharge is 
• How partial discharge damages insulation 
• Some test methods   

Target Audience: This webinar is intended for all personnel who test or rewind medium voltage stators.

Carlos Ramirez
Especialista de Soporte Técnico de EASA

Ya sea para garantizar la continuidad del servicio o por un fallo o por un funcionamiento inusual, las pruebas in situ de los motores son valiosas para garantizar que no existan condiciones de ensamblaje anormales después de la reparación del equipo, evitando así el desmontaje de equipos que están en buen estado. También confirman si la reparación se ha realizado satisfactoriamente.

Este webinario abarca la inspección y pruebas eléctricas de motores eléctricos instalados, incluyendo:

• Evaluación del estado del motor para servicio continuo
• Pruebas de diagnóstico e interpretación de fallos
• Puntos clave de la inspección física

Este webinario está destinado a supervisores, ingenieros y técnicos de los centros de servicio que realizan pruebas.

Carlos Ramirez
Especialista de Soporte Técnico de EASA

Este webinario cubrirá los fallos asociados con los motores trifásicos accionados con variadores electrónicos de frecuencia (VFDs) y como rebobinarlos, rebajando las posibilidades de fallos futuros. Los transitorios de voltaje producidos por los VFDs pueden deteriorar los aislamientos de los devanados y los fabricantes y los centros de servicios se han dado cuenta que los sistemas de aislamiento de estos motores se deben mejorar para ayudar a soportar su uso con VFDs. 
 
Los temas incluyen:

• Transitorios de voltaje
• Materiales inverter duty
• Procesos para lograr un devanado con aislamiento inverter duty
• Otros aspectos a considerar con relación a los cables y VFDs

 Este webinario es adecuado para bobinadores, supervisores e ingenieros.

Tom Bishop, PE
EASA Senior Technical Support Specialist

This webinar will address methods for removal and installation of couplings on straight or tapered shafts. The most common good practice methods will be described. 

Primary topics are: 

• Coupling removal straight shaft 
• Coupling removal tapered shaft 
• Coupling installation straight shaft 
• Coupling installation tapered shaft 

Target Audience: This webinar is intended for mechanical technicians, field service technicians, engineers, supervisors and managers. The content will be beneficial for beginners through highly experienced personnel. 

Gene Vogel
EASA Pump & Vibration Specialist

A bearing journal repair on a pump, motor or other machine shaft is a common repair in any EASA service center. The choice between welding, metalizing or plating should be considered for various applications. Time required, equipment cost, process cost, and of course durability in various applications are important concerns. 

Topics include: 

• An overview of each technique 
• Recommendations for various machine applications 
• Guidelines for equipment cost and process cost 
• Concerns for implementing a process in the service center 

Target Audience: Managers, supervisors, engineers and machine shop technicians will benefit from this practical review of common shaft repair techniques. 

Billy Higgs
EASA Technical Support Specialist

Are you struggling with training new technicians to take data and rewind DC armatures properly? This webinar addresses the critical skill gap in our industry for qualified DC armature technicians. With no formal schooling available for this specialized process, most training depends on your best winder, who may not always be the best communicator. Proper documentation ensures that technicians working weekends or holidays on priority jobs won't be delayed by unclear instructions or missing information. Learn how proper data collection and documentation can prevent confusion, rework, and warranty issues. 

Topics include:

• Gathering accurate initial measurements and identifying critical reference points like "slot 1" 
• Techniques for documenting data neatly and completely on data cards 
• Understanding commutator and armature body construction fundamentals 
• Distinguishing between form and random coil armatures 
• Identifying coil components and right/left hand coil configurations 
• Calculating and understanding the relevance of slot pitch 
• Working with bar or mica lineups and understanding skewed vs. straight slots 
• Differentiating between lap and wave windings 
• Calculating commutator and equalizer pitch correctly 
• Understanding progressive vs. retrogressive windings, plex windings, dead coils, and jumpers 

Target Audience: Technicians, purchasers, supervisors and managers 

Billy Higgs
EASA Technical Support Specialist

Struggling with RTDs, thermistors, thermostats, and thermocouples? This focused webinar will improve your diagnostic skills when time and accuracy matter most. When equipment fails and customers wait, knowing exactly how to test each temperature-sensing device becomes critical. Don't let temperature accessories be your diagnostic blind spot.  

This session delivers the practical skills you need:  

• Quick visual identification techniques for all temperature accessories
• How each device functions and why it matters for testing
• The correct test procedure for each accessory type
• Normal reading ranges that indicate proper operation
• Warning signs that reveal impending failures
• Clear pass/fail criteria for confident decision-making

Target Audience: This presentation will benefit service center supervisors, purchasers, managers and technicians.

Chuck Yung
EASA Senior Technical Support Specialist

Do you have customers with high ambient temperatures, motors operating at higher elevations, or in a partial vacuum? This webinar explains the challenges our industry faces when dealing with motors operating at high altitude, especially above 9,000’ (3000 meters), high ambient temperature applications (kilns or ovens), and negative pressure applications.  

Topics include: 

• Thick air cools better than thin air 
• Assumptions about cooler temperatures at higher elevations do not hold true if motors are operating indoors 
• Negative pressure does not just mean less air for cooling, but also less air as insulation 
• Practical methods to cool the motor even when it is operating in a kiln or oven 

Target Audience: Managers, engineers, supervisors and field service technicians will benefit from this webinar. 

Chuck Yung
EASA Senior Technical Support Specialist

This webinar will share practical solutions for mechanics and winders to overcome common challenges and streamline their daily work. Have you ever fought to remove a stuck end bracket, broken a bolt, or struggled to remove a bearing from a blind housing? Discovered that a keyway is worn oversized when your customer is screaming to get the motor back in service? How about dealing with rough iron when rewinding a stator or armature, trying not to scratch a wire, or rewound a low-speed motor that has continuously overheated? If any of these challenges sound familiar, you won't want to miss this webinar. 

Topics include: 

• Techniques for removing stubborn end brackets without damage 
• Bearing removal strategies for difficult blind housing configurations 
• Quick fixes for worn keyways when time is critical 
• Thermal management solutions for problematic low-speed motor designs 
• Preventative maintenance practices  

Target Audience: Supervisors, machinists, mechanics, and winders will benefit from this webinar.

Gene Vogel
EASA Pump & Vibration Specialist

Spectrum analysis is the primary tool for analyzing vibration problems. Yet, a lot of useful information can be acquired by tracking the vibration characteristics as power is disconnected from the machine. Most spectrum analyzers have a function for capturing the coast-down data. Knowing how to setup and use that instrument function is important for many vibration analysis and balancing situations. 

Topics include: 

• Applications for coast-down analysis 
• Bode and Nyquist plots 
• Basic instrument setups for many analyzers 
• Interpreting results 

Target Audience: Vibration and balancing technicians, supervisors and engineers will benefit from this practical review of basic vibration analysis tool.