Elevator Troubleshooting
& Repair
A Technician’s Certification
Study Guide
David Herres
INDUSTRIAL PRESS, INC.
Industrial Press, Inc.
32 Haviland Street, Suite 3
South Norwalk, Connecticut 06854
Phone: 203-956-5593
Toll-Free in USA: 888-528-7852
Fax: 203-354-9391
Email: [email protected]
Author: David Herres
Title: Elevator Troubleshooting & Repair: A Technician’s Certification Study Guide
Library of Congress Control Number: 2020930841
© by Industrial Press.
All rights reserved. Published in 2020.
Printed in the United States of America.
ISBN (print): 978-0-8311-3643-7
ISBN (ePDF): 978-0-8311-9527-4
ISBN (ePUB): 978-0-8311-9528-1
ISBN (eMOBI): 978-0-8311-9529-8
Editorial Director/Publisher: Judy Bass
Copy Editor: Janice Gold
Compositor: Patricia Wallenburg, TypeWriting
Proofreader: Alison Shurtz
Indexer: WordCo. Indexing Services, Inc.
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The author and publisher make no warranty of any kind, expressed or implied, with regard to the documentation contained in this book. All rights reserved.
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CONTENTS
Elisha Graves Otis Invents Safeties
AC and DC Electric Motor Maintenance, VFD Troubleshooting, and Diagnostic Procedures
Machine Room
Bearings
Motor Shaft and Bearing Current
Vibration Analysis
Motor Drive Alignment
Electrical Issues
Diagnosing Three-Phase Circuits and Motors
Testing