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Resource Library

Why Pumps Fail

  • June 2020
  • Number of views: 216
  • Article rating: No rating
FREE for Members of EASA
Convention presentation

Centrifugal pump failures are most commonly attributed to seal failure, impeller damage and bearing failures. A good understanding of failure modes for seals, impellers and bearings is essential to providing customers with reliable pump repairs.

Pump Repairs and Procedures

  • April 2020
  • Number of views: 397
  • Article rating: No rating
Webinar recording bundle

A special discounted collection of 8 webinar recordings focusing on various aspects of pump repair.

Just $40 for EASA members!

Wear ring clearance for centrifugal pumps

Understand the pump specific speed to help establish proper tolerance

  • June 2019
  • Number of views: 2158
  • Article rating: No rating
Trade press article — Pumps & Systems

One of the most common repairs on centrifugal pumps is replacing worn or damaged wear rings. To restore efficient, reliable operation and prevent catastrophic pump failure, it is critical to restore proper clearances between the stationary casing wear ring and the rotating impeller wear ring. Although many pump manufacturers provide clearances and dimensions, some do not. There are plenty of aging pumps around from now-defunct manufacturers for which dimension data is simply not available.

In such cases, the rule of thumb that follows provides some guidance for acceptable running clearances, or the minimum running clearance chart in American Petroleum Institute (API) Standard 610 can be used as a guide.

Final Testing for Pumps - An Overview

  • November 2014
  • Number of views: 507
  • Article rating: No rating
Webinar recording

The pump repairs are completed! Now the pump needs to be tested. This presentation discusses the procedures for the basic tests that can be performed on pumps that have been repaired in the service center.

Understand O-Rings in Submersible Pump Maintenance & Repair Process

Inspect compression surfaces thoroughly to help ensure leak-free repairs

  • June 2014
  • Number of views: 879
  • Article rating: No rating
Trade press article — Pumps & Systems

A leak rate of one drip per minute equals about a liter (quart) of water in three days. For an O-ring on a submersible pump, that is a major problem. O-rings are often used for static seals on submersible pumps. Understanding what makes a good static seal and what causes one to leak is important for pump maintenance and repair technicians.

Choosing between "component" and "cartridge" mechanical seals

  • April 2014
  • Number of views: 686
  • Article rating: No rating
Article

For many larger centrifugal pumps, there are options for installing “component” or “cartridge” mechanical seals. Understanding the advantages and limitations of each will allow you to recommend the best solution for customer applications.

Drip, drip, drip: Understanding O-rings in the repair process

  • June 2013
  • Number of views: 511
  • Article rating: No rating
Article

One drip per minute amounts to about a liter (quart) of water in 3 days. If that's the leak rate for an O-ring on a submersible pump, that's a big problem. O-rings are common for static seals on submersible pumps. An understanding of what makes a good static seal, and what causes them to leak, is obviously important for pump repair technicians.

Fundamentals of Pump Repair

  • June 2013
  • Number of views: 1196
  • Article rating: No rating
Book

The repair of the various types of pumps represents an important segment of the service center repair market. Electric motors and pumps are the two most widely used industrial machine components.                                                                                                                                                                                                                       

Although there are two principle pump types (dynamic and positive displacement), this manual focuses on dynamic pumps and the fundamentals of dynamic pump repair. The information it contains will be helpful to both novice and experienced pump repair technicians, to supervisors and managers of pump repair operations, and to customer service and sales personnel who communicate with customers about pump repair issues.

Trials and tribulations of split case pump seals

  • April 2013
  • Number of views: 553
  • Article rating: No rating
Article

Split case pump seals are commonly the most difficult installation of any mechanical seal. The replacement of these seals usually is determined by the type originally found in the pump. The problem is that the existing seal type may not be the best for the fluid pumping application. The fluid to be pumped often is the last thing considered for a system designer specifying a pump for a general application. And if the fluid contains more than just water, problems can start to arise.

Repair Tips for Submersible Pumps

  • February 2013
  • Number of views: 437
  • Article rating: No rating
Webinar recording

This presentation focuses on:

  • Types of submersible pumps
  • Tips on seal arrangements
  • Common repair procedures
  • Cables and cable entries
  • Testing submersibles in the service center

Getting The Most From Your Electric Motors

Getting The Most From Your Electric Motors - coverThis 40-page booklet provides a great marketing tool for your service center! Use it to provide end users with information that will help them obtain the longest, most efficient and cost-effective operation from general and definite purpose electric motors.

This booklet covers topics such as:

  • Installation, startup and baseline information
  • Operational monitoring and maintenance
  • Motor and baseline installation data
  • How to read a motor nameplate
  • Motor storage recommendations

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EASA Technical Manual

EASA Technical Manual cover

The EASA Technical Manual is the association's definitive and most complete publication. It's available FREE to members in an online format. Members can also download PDFs of the entire manual or individual sections.

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ANSI/EASA AR100-2015

ANSI/EASA AR100-2015 cover

Recommended Practice for the Repair of Rotating Electrical Apparatus
This is a must-have guide to the repair of rotating electrical machines. Its purpose is to establish recommended practices in each step of the rotating electrical apparatus rewinding and rebuilding processes.

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DESCARGAR - ESPAÑOL

EASA AR200

EASA AR200: Guide for the Repair of Power and Distribution Transformers cover

Guide for the Repair of Power and Distribution Transformers
This document establishes guidelines for each step of the repair of power transformers, describing record keeping, tests, analysis, and general guidelines for the repair of power transformers.

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