This webinar goes through the basics of what accessories may be needed for proper VFD control and power quality add-ons to improve motor driven system reliability.

Vertical hollow-shaft motors present some unique reassembly challenges, one of which is setting end play. Here's a tip that applies to assembly of vertical hollow-shaft motors in the 320 to 440 frame drip-proof enclosures with grease lubricated lower guide bearings and oil-lubricated upper thrust bearings.

Service centers are often called on to provide replacement pumps or pump motors or to advise on pump retrofit and re-application projects. A good understanding of the parameters that govern pump performance is essential to help customers with these opportunities. The information here relates to rotodynamic pumps (centrifugal and axial flow impellers) and not to positive displacement pumps.

When an AC motor is initially energized at rated voltage (and frequency), the current drawn is many times rated current until the motor attains full operating speed. Consequences of starting current include short time overheating of stator windings and rotors, undesirable operation of overload protective devices and a sag in the supply voltage.

The importance of precise and accurate measurements is more critical today than ever. Our customers are increasingly demanding of best possible practices and outcomes when having their machinery serviced and repaired. The ideas and information presented here are applicable to other mechanical measuring devices such as inside micrometers, calipers, protractors, levels, depth gauges and such.

Resiliency is on display with more than 75 percent of respondents asserting that members feel optimistic or very optimistic about 2021.

Revised May 2021!
EASA's most comprehensive technical document is available FREE to EASA members. Download the complete manual or just the sections you're interested in.

Determining the source of noise in an electric motor is often more challenging than correcting it. A methodical investigative approach, however, can narrow the possibilities and make it easier to resolve the issue—with one caveat. If the noise is due to something in the motor design (e.g., a manufacturing defect or anomaly), a solution may be impossible or impractical.

This presentation showcasees the findings from the Motor System Market Assessment (MSMA), including results on motor system maintenance practices.

There are a lot of factors to take into consider when interpreting the bar-bar test or surge test. This articles reviews those factors.