Read the following passages to understand more about recognizing and troubleshooting these problems. Noise indicates motor problems but ordinarily does not cause. Pc line pclw310 driver c program files hewlettpackard digital imaging bin hpfccopy. The efficiency you gain in every aspect of your company from job costing to accounting to scheduling employee labor brings. This course covers the operation and maintenance of ac and dc motors, including 3phase, dual voltage and multiple speed motors.
Unit 16 electric motors washington state university. How to troubleshoot motors and drives, starting at the inputs. Troubleshooting electric motor problems made easy for you. The following series of repair documentsthe service center evaluation guide. Tips for troubleshooting electric motors understanding the nuances of various motor types is essential when servicing or installing such units b y d e n n i s b u s h a fter more than 100 years of use, with an ever increasing installed base, there are probably few aspects of. A fully uptodate, handson guide to electric motors.
Pdf electric motor maintenance and troubleshooting 2nd edition download full ebook. An ac motor is an electric motor driven by an alternating current ac. Second, discharge the capacitors to avoid electric shock. Electric motor maintenance and troubleshooting, 2nd. Pdf download troubleshooting electric motors pdf full ebook. Electric motor drive installation and troubleshooting. Maassen, erik, maintenance tips for electric motor bearings.
Essential for anyone who needs to buy, install, troubleshoot, maintain, or repair small to industrialsize electric motors, this practical guide contains new information on threephase motors along with coverage of the. Some standard lincoln electric motors are also capable of pws, yds or both as. A wide variety of electric motor repair tools options are available to you, there are 782 suppliers who sells electric motor repair tools on, mainly located in asia. User guide pdf files on the internet quickly and easily. Discussion of motor bearing maintenance for optimizing reliability. This book, therefore, targets the large body of workers engineers and students reasonably versed in engineering concepts who feel the need for practical insights relating to electric motors. Then thru an inline check valve to stop any reverse pressure to the incoming psi.
Practical electric motor handbook pdf by irving m gottlieb. Ac electric motor troubleshooting guide test procedures. The following series of repair documents the service center evaluation guide, selected bibliography on electric motor repair, model repair specifications for low voltage motors, and motor repair tech brief were produced by the u. Motorbase is a comprehensive shop management system specifically designed for the electric motor repair industry. Below are some of the frequently asked questions regarding electric motor troubleshooting that have been answered by. The modern electric motor installation the individual motor drive has practically replaced all other types. The top countries of suppliers are china, taiwan, china, and india, from which the percentage of electric motor repair tools supply is 99%, 1%, and 1% respectively. Maintenance and troubleshooting of electric motors reliance electric posted 11005. Below are some of the frequently asked questions regarding electric motor troubleshooting that have been answered by the experts. Do not lift both the motor and driven equipment with the motor lifting means. He owned an electric motor repair shop for a number of years, and he taught the electric motor repair course at southwestern technical institute.
Bmp safety information synchronous motor 7 981, v1. It is comparatively easy to obtain the required speed through the use of motors directly connected to the driven machine, through speed reducers, or the now more economical geared motors, or even through vbelt or chain or sprocket drive. Download electric motor maintenance and troubleshooting free books. A fully uptodate, handson guide to electric motorskeep electric motors running at peak performance. Post a question or comment about how to troubleshoot electric motors such as air conditioning compressor motors, heating equipment burner or fan motors, swimming pool. Traverse master is a fully integrated software solution for apparatus repair shops that combines job cost, inventory, and distribution with complete accounting functionality to help manage bottomline performance. Maintenance and troubleshooting of electric motors reliance electric posted 11005 motor maintenance scheduled routine care introduction the key to minimizing motor problems is scheduled routine inspection and service. The tap water runs thru an inline sediment filter to keep dirty water from going into the pump. An electric motor is an extremely handy device which has multiple uses. This latest edition features a new chapter on solid state control and undated technology on. Ezgo repair manual ezgo repair manual pdf 2012 ezgo marathon repair manual repair manual 2009 ezgo rxv ezgo 2012 txt gas repair manual ezgo txt electric. Service center evaluation guide us department of energy. Electric motor maintenance and troubleshooting, second edition explains in detail how all types of ac and dc motors work. Pdf download electric motor drive installation and.
Maintenance safe maintenance practices performed by qualified personnel are imperative. Selected office of industrial us department of energy. Both alternating current and direct current motors are treated thoroughly, and extensive consideration is given to the connections and troubles in controllers. Download pdf of electric motor maintenance and troubleshooting second edition.
Electric motor drive installation and troubleshooting is designed for technicians in the field responsible for installing, programming, troubleshooting, and retrofitting electric motor drives. Electric motor troubleshooting polyphase application data d troubleshooting guide 5t. Electric motor maintenance and troubleshooting by augie hand. Electric motor troubleshooting questions about electric. Some of its common problems include failure to start, motor overheating, noise, and vibration. This article describes ac electrical motor troubleshooting. Handson and lecture the participant is able to learnbydoing in the course. Before starting maintenance procedures, be positive that. The only userserviceable parts on an ac motor are the brushes and the bearings. Augie hand had 30 years of handson experience in repairing and troubleshooting motors, followed by 15 years of giving seminars on the subject for electric motor repair shop technicians and inhouse training for large industry maintenance technicians. Therefore, motor troubleshooting involves the entire. Model repair specifications for low voltage induction motors.
Discussion of 5 fault zones to look at during troubleshooting power circuit. These motors usually function without many problems, but they do require maintenance and repairs at times. The page top photo was taken of of an oil burner electric motor not an air conditioning blower fan motor or pump motor, but youll see that all of these electric motors look a lot alike. Maintain the systems components to ensure smooth, efficient operation. Electric motor repair, model repair specifications for low voltage motors, and. Our acs software division are worldrecognized experts in electrical apparatus and electric motor repair software. Tips for troubleshooting electric motors understanding the nuances of various motor types is essential when servicing or installing such units b y d e n n i s b u s h a fter more than 100 years of use, with an ever increasing installed base, there are probably few aspects of an electric motor s usage and failure modes. A springloaded auxiliary manual starting switch connected power to this second motor for a few seconds. However, it is possible to perform electric motor troubleshooting and repair safely. Bent motor or drive shaft replace the shaft impeller not centred on the inlet cone. Downloadelectric motor repair pdf robert rosenberg.
Electric motor drive installation and troubleshooting atp. Some standard lincoln electric motors are also capable of pws, yds or both as indicated in the following chart. A factory can kick out a motor winding in minutes when making hundreds. This industryleading resource begins with electric motor principles, power requirements, and control methods and focuses on the safe operation. I dont miss the stress of trying to get customers motor repaired in a timely manner. Always keep hands and clothing away from moving parts. Selected bibliography on electric motor repair energy.
The frequency of routine service varies widely between applications. Be sure required safety guards are in place before starting. My original aim was to bridge the gap between specialist textbooks which are pitched at a level too academic for the average user and the more prosaic handbooks, which are full of useful detail but provide. This best seller, is a complete handson approach to the. Check the electrical supply matches the motor nameplate. When a motor fails, it is often difficult to see why it failed just by looking at it. Working on an electric motor carries a risk of fatal electric shock. Whitelegg now offer an unrivalled range of equipment to the electric motor repair industry.
Department of energys office of industrial technologies oit with input from. Verify continuity of windings motor leads to unpainted motor end plate. First, disconnect all power to the motor before beginning work, including the circuit breaker. Elecric motor repair by robert rosenberg goodreads. All motors are suitable for full voltage or acrosstheline start. Then thru an inline check valve to stop any reverse pressure to. See the motor nameplate for proper connection diagrams. Maintenance and troubleshooting of electric motors reliance electric posted 11005 motor maintenance scheduled routine care. An imprint of the brush, signs of arcing or uneven wear indicate the need to remove the motor from service and repair or replace the rings. Disconnect power to the motor before performing service or maintenance. Complete handson approach to the repair and control of ac and dc motors.
The motor itself generates voltage when the motor shaft is rotated. This is an intensely practical, nontheoretical book on electric motor repair and rewinding that can be used by someone with little background of electrical knowledge. Hand has been presenting seminars to electric motor repair shops and large. Unit 16 electric motors objectives after studying this unit, the student will be able to state the purpose of an electric motor. Tips for troubleshooting electric motors understanding the nuances of various motor types is essential when servicing or installing such units b y d e n n i s b u s h a fter more than 100 years of use, with an ever increasing installed base, there are probably few aspects of an electric motors usage and failure modes. Electric motor maintenance and troubleshooting, 2nd edition, hand, mcgraw hill professional, 2011, 0071763961, 9780071763967.
In this article we provide a diagnostic guide to determine and repair problems with electric motors. Electric motor maintenance and troubleshooting pdf. Armature winding1920 pdf armature winding and motor repair. An electric motor is used for producing mechanical energy in various applications.
Electric motor repair robert rosenberg, august hand. This latest edition features a new chapter on solid state control and undated technology on microprocessor controls. A motor placed in storage may or may not work, regardless of its physical appearance. Maintain the systems components to ensure smooth, efficient operation isolate and resolve system hardware problems problem isolation. First, the drive input is the ac power entering the drive from the mains second, the drive and its output, where the ac to dc converter, the dc filter, and the dc to ac inverter provide the three phase power to the motor how to troubleshoot motors and drives, starting at the inputs. Electric motors, gearmotors and drives site search sub motor troubleshooting chart caution. Participants learn the basics of electric motors including how to maintain and troubleshoot common problems found in the workplace. Installing a new capacitor of equal rating should remedy the problem. The following series of repair documentsthe service center evaluation guide, selected bibliography on. The above electric motor troubleshooting chart will get you down to the specific failure cause like a capacitor or a centrifugal switch, but will not get into details like electric motor troubleshooting capacitor, its self. Post a question or comment about how to troubleshoot electric motors such as air conditioning compressor motors, heating equipment burner or fan motors, swimming pool motors, water well pump motors.
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