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Instrumentation

Preventive AC Motor Maintenance — Preventive AC Motor Maintenance
In iKnow

This is the third lesson in the iKNOW AC/DC Motor Maintenance Library. The lesson explains aspects of preventive motor maintenance, the steps in inspecting a motor for general maintenance and for identifying problems, and cleaning and lubricating a motor as part of a preventive motor maintenance program. <br /><br />

AC Motor Maintainence — AC Motor Maintainence
In iKnow

This lesson shows and explains how to overhaul AC induction motors. Procedures for disassembling, inspecting, cleaning, and reassembling endbells, rotors, and bearings are presented in detail. The lesson also covers procedures for inspecting and cleaning the stator as well as windings and testing the motor once it has been reassembled. <br /><br />

Introduction to AC Motor Maintenance — Introduction to AC Motor Maintenance
In iKnow

This is the first lesson in the iKNOW&reg AC/DC Motor Maintenance Library. The lesson explains the purpose of AC motor maintenance programs and the types of motor maintenance. The lesson also identifies safety procedures that should be used during motor maintenance. <br /><br />

Using a Wheatstone Bridge — Using a Wheatstone Bridge
In iKnow

This is the fourth lesson in the iKNOW Ammeters, Meggers, and Wheatstone Bridge Library. This lesson explains how to balance a Wheatstone bridge and the process used to set mechanical and electrical zero. How to interpret the readings of a Wheatstone bridge is also explained. <br /><br />

Wheatstone Bridge — Wheatstone Bridge
In iKnow

This is the third lesson in the iKNOW&reg Ammeters, Meggers, and Wheatstone Bridge Library. This lesson explains what a bridge circuit is, the purpose and components of a Wheatstone bridge, and its function. <br /><br />

Using the Megohmmeter — Using the Megohmmeter
In iKnow

This is the second lesson in the iKNOW Ammeters, Meggers, and Wheatstone Bridge Library. This lesson describes safety issues to consider when using a megohmmeter, how to select the correct megger for the job, setup, and the steps necessary to take a megger reading. <br /><br />

Introduction to Megohmmeters — Introduction to Megohmmeters
In iKnow

This is the first lesson in the iKNOW&reg Ammeters, Meggers, and Wheatstone Bridge Library. This lesson explains Ohm??s Law and how it is used when analyzing test results. The basic components, uses, and functions of a megohmmeter are described. Insulation and causes of insulation damage are also covered. <br /><br />

Gate Valve Repair (A9101) — Gate Valve Repair (A9101)
In iKnow

This lesson addresses the procedures for disassembly, inspection, and reassembly of a typical gate valve. The lesson covers the locations and functions of valve components. Procedures for disassembling, inspecting, and measuring valve parts and procedures for lapping the disc and checking seat contact are also covered. <br /><br />

General Protective Equipment — General Protective Equipment
In iKnow

This is the eighth lesson in the iKNOW Electrical Safety Library. This lesson presents information about safeguards, other than Personal Protective Equipment worn on the body, used when working with or around electricity. Inspection, repair, and care of general protective equipment, and proper used of this equipment are presented. <br /><br />

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