How to schedule

To schedule private education for your group, contact:

Dale Shuter, CMP
Meetings & Expositions Manager
+1 314 993 2220, ext. 3335
dshuter@easa.com

1 hour of training

$300 for EASA Chapters/Regions
$400 for member companies
$800 for non-members

How a webinar works

All EASA private webinars are live events in which the audio and video are streamed to your computer over the Internet. Prior to the program, you will receive a web link to join the meeting.

The presentation portion of the webinar will last about 45 minutes, followed by about 15 minutes of questions and answers.

Requirements

Internet connection
Computer with audio input (microphone) and audio output (speakers) appropriate for your size group
TV or projector/screen

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The Zoom webinar service EASA uses will ask to install a small plugin. Your computer must be configured to allow this in order to have full functionality. Please check with your IT department or company's security policy prior to scheduling a private webinar.

Private Webinars

EASA's private webinars are an inexpensive way to bring an EASA engineer into your service center, place of business or group meeting without incurring travel expenses or lost production time.

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Article

Vibration problems with motors installed on vertical pumps

Knowledge of common vibratory forces helps diagnose, correct problems

February 2010
Number of views: 9726
Article rating:

Gene Vogel
EASA Pump and Vibration Specialist

When motors are installed on top of vertical pumps, high vibration is a common problem. The source of the problem can be a mechanical issue with the pump, motor or coupling, or it can be hydraulic forces from the pump. Often structural issues involving resonance amplify the vibration. An understanding of the nature of this style pump and the various forces is essential to diagnosing and correcting vibration problems on vertical pump motors.

There are quite a number of configurations of vertical pumps. Submersible pumps fall into this general category. This discussion, however, will omit submersibles and focus on those pumps that are surface mounted where the motor is bolted to a pedestal on top of the pump. See Figure 1. This is the style that most commonly exhibits high vibration conditions. An important contributing condition is resonance, and specifically “reed frequency” resonance. But an understanding of the vibratory forces is important also.

Available Downloads

VibProbVertMtrs_0210(.pdf, 519.88 KB) - 321 download(s)

Related Reference and Training Materials

Principles of Medium & Large AC Motors (NEMA Standards)

Section 13: Motor Alignment, Vibration & Noise

Principles of Medium & Large AC Motors (IEC Standards)

Section 13: Motor Alignment, Vibration & Noise

Fundamentals of Pump Repair

Section 8: Pump Reliability

Categories: Pumps, Vibration

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