Electrical Theory & Applications for HVACR
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Electrical Theory & Applications for HVACR

Turner L. Collins          Earl Delatte          Randy F. Petit, Sr.

With the majority of HVACR service calls being electrical in nature, it is important for technicians to have a solid understanding of electrical fundamentals allowing them to develop a systematic and methodical procedure for troubleshooting.

The Electrical Theory and Application for HVACR manual provides students and practicing technicians with the information and knowledge necessary to accurately diagnose and solve electrical system faults.

This manual is full of color illustrations and includes student worksheets. The spiral binding will allow students to tear out worksheets for grading by an instructor if used in a Training environment.

Main topics include: safety and hazard awareness, electrical fundamentals, circuits and components, motors, wiring diagrams, automated control systems, and troubleshooting.

Contents:

Safety and Hazard Awareness

Circuits and Their Components

• Series Circuit
• Circuit Protection
• Total Resistance in a Series Circuit
• Loads and Switches
• Series Circuit Laws
• Transformers
• Parallel Circuits
• Low‐Voltage Transformers
• Total Resistance in a Parallel Circuit
• Solenoid valves
• Parallel Circuit Laws
• Relays
• Combination Series /Parallel Circuits
• Sequencer
• Three‐Phase Circuits
• Contactors
• Single‐Phase Circuits
• Contactor Coil Burn‐Out
• The Neutral Wire
• Line Starters
• The Safety Ground Wire
• Defrost Timers
• Conductors
• Thermostats
• Insulators
• Heat Anticipators
• Semi‐Conductors

Motors

• Induction Motors
• The Run Capacitor
• Parts of a Motor
• Capacitor Ratings
• Stator Poles
• Single‐Phase Motor Starting Relays
• Stators
• Current Relay
• Rotors
• Potential Relay
• Motor Speed
• Solid State and PTC
• Shaded Pole
• Calculating Motor Horsepower
• Split‐Phase Motors
• Service Factor
• Direction of Rotation
• Locked Rotor Amps
• Disconnecting the Start Winding
• Full Load Amps
• CS or CSIR Motors
• Overload Protectors
• PSC Motors
• Three‐Phase Motors
• CSR Motors
• Changing the Rotation of a Three‐Phase Motor
• Identifying Hermetic Motor Terminals
• Checking Resistance of Windings
• Electronically Communicated Motors (ECM)
• Dual‐Voltage Three‐Phase Motors
• Shaded Pole and PSC Motor Speeds
• The Motor Name Plate
• Capacitors Name Plate Data
• Definitions
• Start Capacitors
• Variable Frequency Drives

Understanding Wiring Diagrams

• Pictorial and Schematic Diagrams
• Ladder Diagrams
• Pictorials versus Schematics
• Reading a Wiring Schematic
• Combining Pictorial & Schematic Drawings
• Schematic Diagram Symbols
• Line‐Side versus Load‐Side

Automated Control Systems

• Why Have Automated Controls
• Basic Operating Structure
• Building Automation
• Controller Types
• System Protocols
• Network Connections

Troubleshooting

• Terms
• Ammeters
• Voltmeters
• Troubleshooting Switches
• Troubleshooting Using a Voltmeter
• Systematic Troubleshooting
• Lineal Searching
• Voltmeter or Ohmmeter
• Split Searching
• Testing Capacitors
• Ohmmeters
• Tips and Suggestions

Glossary

143 Pages - 8-1/2 x 11
Soft Cover
Copyright 2012

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