iv About the Authors Shawn Ballee is Assistant Professor of Industrial Systems Technology at Waubonsee Community College in Sugar Grove, IL, where he has taught since 1995. His teaching responsibilities have included classes in motor controls, PLCs, hydraulics, pneumatics, mechanical power transmission, power distribution, and mathematics. He has extensive industry experience as an electrical and electronics technician and as a consulting maintenance technician for local manufacturers. Mr. Ballee holds a BS degree in Industrial Technology from Northern Illinois University and a MEd in Post-Secondary Mathematics from Concordia University. Mr. Ballee is a member of the NIMS Advisory Council and he has also served on MSSC’s National Expert Panel. Gary Shearer is an Instructor of Industrial Electrical Maintenance at Tennessee College of Applied Technology (TCAT), Murfreesboro. Since joining the faculty of TCAT, Mr. Shearer has taught a wide range of technical classes, including electricity, electronics, mechanical systems, machine tool, welding, process control, motor control, PLCs, robotics, HVAC, fl uid power, industrial/residential wiring, electrical test equipment, troubleshooting, safety, and print reading. Previously, he worked as a senior test engineer for ReMedPar, a medical equipment and parts organization, and as an R&D engineer at Vanderbilt University’s W. M. Keck Foundation Free Electron Laser Center. Intellectual property created by Mr. Shearer includes a US patent and an extensive list of technical and scientifi c publications. He served as a member of the NIMS Technical Working Group that prepared the Industrial Technology Maintenance Duties and Standards. Contributors Th e author and publisher wish to thank the following teaching professionals for their valuable contributions to Industrial Maintenance and Mechatronics: James Mosman, Associate Professor of Welding Technology and Department Chair of Industrial Technology at Odessa College, Odessa, TX, for authoring the three chapters in the Maintenance Welding section. Dr. Paul Dettmann, Customized Training Representative for South Central College in North Mankato, MN, for contribution of technical edits, copy, and illustrations in parts of Chapter 3, Maintenance Principles and Record Keeping, and Chapter 6, Print Reading, and development of presentations and assessment question banks for the instructor resources.