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Instrumentation

Commutator Maintenance — Commutator Maintenance
In iKnow

This is the eleventh lesson in the iKNOW AC/DC Motor Maintenance Library. The lesson demonstrates the process of preparing a commutator for reconditioning, how to properly cut mica, how to check the commutator after maintenance, and explains the purpose of performing a commutator run-in procedure. <br /><br />

Conduit Bending — Conduit Bending
In iKnow

This is the second lesson in the iKNOW Conduit Installation Library. This lesson instructs the learner in the proper methods of cutting, cleaning, and bending conduit. The lesson also demonstrates how to make various bends and when different bends are used. <br /><br />

Clamps, Vises, and Pliers — Clamps, Vises, and Pliers
In iKnow

This is the first lesson in the iKNOW&reg Hand Tools Library. This lesson introduces and demonstrates the proper use of tools used for holding. <br /><br />

Commutator Inspection — Commutator Inspection
In iKnow

The ninth lesson in the iKNOW&reg AC/DC Motor Maintenance Library, this lesson shows participants how to identify some problems that affect the commutator. <br /><br />

Capacitance — Capacitance
In iKnow

This is the eighth lesson in the iKNOW Electrical Theory for Troubleshooters Library. This lesson explains capacitors, their function, and how capacitance affects AC circuits. <br /><br />

Building Electrical Diagrams — Building Electrical Diagrams
In iKnow

This is the sixth lesson in the iKNOW Electrical Print Reading Library. This lesson presents the different views used in electrical diagrams as well as how to identify components, cables, and conduits. The cable chart is also presented. <br /><br />

Brush Maintenance — Brush Maintenance
In iKnow

This is the final lesson in the iKNOW&reg AC/DC Motor Maintenance Library. The lesson describes how to select and inspect brushes. The lesson identifies the procedures for cleaning, inspecting, and setting the height of a brush holder. How to seat brushes and adjust spring pressure is demonstrated. <br /><br />

Analyzing Bearing Failure — Analyzing Bearing Failure
In iKnow

This is the second lesson in the iKNOW Bearings Library. This Lesson explains the purpose of bearings and demonstrates how bearings reduce friction and maintain the alignment of operating equipment. The basic operation of anti-friction bearings and plain journal bearings is demonstrated as well as the importance of full fluid film lubrication and proper lubrication clearance. Additionally, indications of various premature bearing failures are discussed. <br /><br />

Basic Electrical Properties — Basic Electrical Properties
In iKnow

This is the second lesson in the iKNOW&reg Electrical Theory for Troubleshooters Library. This lesson covers Ohm's Law and the use of Ohm??s Law to calculate an unknown value. It also defines voltage, current, resistance, and power. <br /><br />

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