Synopses & Reviews
Ideal for students and beginning technicians, Electricity for Refrigeration, Heating and Air Conditioning, 7E zeroes in on the basic electrical principles necessary to understand today's modern control systems. This extraordinarily practical approach allows readers to focus exclusively on the electronics information they will use in the field, without bogging them down in unnecessary theory. Chapter 9 includes new information on motor frames and electronically commutated motors, ECM. Such as the circuits being discussed in schematic diagrams, as well as the direction of the current flow within circuits. As in past editions, emphasis is on developing systematic diagnosis and troubleshooting methods and procedures in order to enable readers to become highly-skilled, professional HVAC-R service technicians. A comprehensive glossary is also included to assist those who are new to the field in understanding and using industry terms.
About the Author
Gene Smith is an Air Conditioning Technology Instructor at Athens Technical College in Athens, GA, where he has had a long and distiguished career (1969-2005). Gene also ran his own contracting and consulting firm for many years. He is one of the most cooperative and pleasant (let alone successful) authors that we have the privilage of working with.
Table of Contents
Preface Chapter 1 Electrical Safety Objectives Key Terms Introduction 1.1 Electrical Injuries 1.2 Dealing with Shock Victims 1.3 National Electrical Code 1.4 Electrical Grounding 1.5 Circuit Protection 1.6 Circuit Lockout Procedures 1.7 Electrical Safety Guidelines Summary Questions Study Guide/Lab Manual Reference Chapter 2 Basic Electricity Objectives Key Terms Introduction 2.1 Atomic Theory 2.2 Positive and Negative Charges 2.3 Flow of Electrons 2.4 Conductors and Insulators 2.5 Electric Potential 2.6 Current Flow 2.7 Resistance 2.8 Electric Power and Energy 2.9 Ohm?s Law 2.10 Calculating Electric Power Summary Questions Study Guide/Lab Manual Reference Chapter 3 Electric Circuits Objectives Key Terms Introduction 3.1 Basic Concepts of Electric Circuits 3.2 Series Circuits 3.3 Parallel Circuits 3.4 Series-Parallel Circuits Summary Questions Study Guide/Lab Manual Reference Chapter 4 Electric Meters Objectives Key Terms Introduction 4.1 Electric Meters 4.2 Ammeters 4.3 Voltmeters 4.4 Ohmmeters Summary Questions Study Guide/Lab Manual Reference Chapter 5 Components, Symbols, and Circuitry of Air-Conditioning Wiring Diagrams Objectives Key Terms Introduction 5.1 Loads 5.2 Contactors and Relays 5.3 Magnetic Starters 5.4 Switches 5.5 Safety Devices 5.6 Transformers 5.7 Schematic Diagrams 5.10 Pictorial Diagrams 5.11 Installation Diagrams Summary Study Guide/Lab Manual Reference Chapter 6 Reading Schematic Diagrams Objectives Key Terms Introduction 6.1 Schematic Diagram Design 6.2 Reading Basic Schematic Diagrams 6.3 Reading Advanced Schematic Diagrams 6.4 Heating Operation 6.5 Commercial Refrigeration System with Pump Down Cycle Summary Questions Study Guide/Lab Manual Reference Chapter 7 Alternating Current, Power Distribution, and Voltage Systems Objectives Key Terms Introduction 7.1 Basic Concepts of Alternating Current 7.2 Power Distribution 7.3 Volt-Single Phase-60 Hertz Systems 7.4 Three-Phase Voltage Systems 7.5 230 Volt-Three Phase-60 Hertz Delta System 7.6 208 Volt-Three Phase-60 Hertz Wye System 7.7 Higher-Voltage Systems Summary Questions Study Guide/Lab Manual Reference Chapter 8 Installation of Heating, Cooling, and Refrigeration Systems Objectives Key Terms Introduction 8.1 Sizing Wire 8.2 Disconnect Switches 8.3 Fusible Load Centers 8.4 Breaker Panels 8.5 Distribution Centers 8.6 Installing Electrical Circuits for Refrigeration, Heating, and Air- Conditioning Equipment Summary Questions Study Guide/Lab Manual Reference Chapter 9 Basic Electric Motors Objectives Key Terms Introduction 9.1 Magnetism 9.2 Basic Electric Motor 9.3 Types of Electric Motors 9.4 Shaded-Pole Motors 9.5 Capacitors 9.6 Split-Phase Motors 9.7 Permanent Split-Capacitor Motors 9.8 Capacitor-Start?Capacitor-Run Motors 9.9 Three-Phase Motors 9.10 Hermetic Compressor Motors 9.11 Service Call Protocol 9.12 Service Calls Summary Questions Practice Service Calls Study Guide/Lab Manual Reference Chapter 10 Components for Electric Motors Objectives Key Terms Introduction 10.1 Starting Relays for Single-Phase Motors 10.2 Current or Amperage Relays 10.3 Potential Relays 10.4 Hot-Wire Relays 10.5 Solid-State Starting Relays and Devices 10.6 Motor Bearings 10.7 Motor Drives 10.8 Service Calls Summary Questions Practice Service Calls Study Guide/Lab Manual Reference Chapter 11 Contactors, Relays, and Overloads Objectives Key Terms Introduction 11.1 Contactors 11.2 Relays 11.3 Overloads 11.4 Magnetic Starters 11.5 Push-Button Stations 11.6 Service Calls Summary Questions Practice Service Calls Study Guide/Lab Manual Reference Chapter 12 Thermostats, Pressure Switches, and Other Electric Control Devices Objectives Key Terms Introduction 12.1 Transformers 12.2 Thermostats 12.3 Staging Thermostats 12.4 Clock Thermostats 12.5 Pressure Switches 12.6 Miscellaneous Electric Components 12.7 Service Calls Summary Questions Practice Service Calls Study Guide/Lab Manual Reference Chapter 13 Heating Control Devices Objectives Key Terms Introduction 13.1 Heating Fundamentals 13.2 Basic Heating Controls 13.3 Gas Heating Controls 13.4 Oil Heating Controls 13.5 Electric Heating Controls 13.6 Hydronic and Steam Controls 13.7 Service Calls Summary Questions Practice Service Calls Study Guide/Lab Manual Reference Chapter 14 Troubleshooting Electric Control Devices Objectives Key Terms Introduction 14.1 Electric Motors 14.2 Contactors and Relays 14.3 Overloads 14.4 Thermostats 14.5 Pressure Switches 14.6 Transformers 14.7 Electric Heating Controls 14.8 Gas Heating Controls 14.9 Oil Heating Controls 14.10 Service Calls Summary Questions Practice Service Calls Study Guide/Lab Manual Reference Chapter 15 Air-Conditioning Control Systems Objectives Key Terms Introduction 15.1 Basic Condensing Units 15.2 Packaged Units 15.3 Field Wiring Summary Questions Study Guide/Lab Manual Reference Chapter 16 Control Systems: Circuitry and Troubleshooting Objectives Key Terms Introduction 16.1 Basic Control Circuits 16.2 Total Control System of Residential Units 16.3 Advanced Control Systems 16.4 Methods of Control on Advanced Systems 16.5 Total Commercial and Industrial Control Systems Summary Questions Study Guide/Lab Manual Reference Chapter 17 Troubleshooting Modern Refrigeration, Heating, and Air-Conditioning Control Circuitry and Systems Objectives Key Terms Introduction 17.1 Diagnosis of Electrical Components 17.2 Troubleshooting Tools 17.3 Troubleshooting with Electrical Meters 17.4 Using Troubleshooting Charts 17.5 Hopscotching: A Useful Tool for Troubleshooting 17.6 Troubleshooting Control Systems 17.7 Service Calls Summary Questions Practice Service Calls Study Guide/Lab Manual Reference Chapter 18 Solid-State Controls and Systems Objectives Key Terms Introduction 18.1 Electronic System Components 18.2 Basic Electronic Control Fundamentals 18.3 Basic Electronic Controls 18.4 Basic Electronic Control Systems Used in Residential Conditioned Air Systems 18.5 Advanced Electronic Controls 18.6 Troubleshooting Electronic Controls Summary Questions Study Guide/Lab Manual Reference Glossary Index