Understanding how your home is wired can help you when it comes time to making minor repairs or planning a renovation project. A dryer that is too hot can not only cause problems with your clot. Electric motor troubleshooting industrial motor training. Rate of failure varies from one application to another. Electric motors convert electrical energy into mechanical motion and are broadly classified into two different categories. Motor maintenance drive maintenance troubleshooting problem isolation you should inspect all mechanical parts of the motor regularly to ensure that no bolts or couplings have become loose during normal operation. 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. How to troubleshoot a 3phase electric motor hunker. See the motor nameplate for proper connection diagrams. Tips for the troubleshooting process can be obtained by following the quick guide for fault symptoms. This article describes ac electrical motor troubleshooting. 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. This will prevent minor problems from developing into more serious problems.
Luckily, the majority of electrical problems in the home are fairly easy to fix. These portable heating devices come in various styles with authenticlooking details like realistic flames and mantels. If your dryer is overheating, it may be time to look in to some electric dryer repair. Electric motor maintenance and troubleshooting, 2nd editionaugie. Well work through some very basic troubleshooting techniques and wo. Electric motor maintenance and troubleshooting, second edition explains in detail how all types of ac and dc motors work. A subsidiary of regalbeloit corporation with leeson. Verify that the motor is getting enough air for proper cooling. Troubleshooting and maintenance of ac motors, routine care. Metallurgical contentmotor switchesair motorsfractional hp and general purpose motorssynchronous motors motor switches motor starting switches have been developed for a wide variation of load requirements, and special switches are available for operation in damp or dust laden atmospheres with high efficiency. Electric motors troubleshooting and understanding w tpc. Motor and fan cover this section consists of the motor frame with stator, motor shaft with rotor, pull rotor, rotor, thrust disc, motor brake spring, brake drum, and fan.
Troubleshooting becomes faster and more rational with an understanding of the relationship between the different systems. Motor capacitors store electrical energy for the motor to use. The motor troubleshooting learning system 85mt2e, used in conjunction with basic electrical machines, covers ac and dc motors troubleshooting and testing using a multimeter and a megger meter. Electric motor maintenance and troubleshooting second edition by augie hand. A properly operating motor may be hot to the touch. Avoid damage and injury when cutting blind into a wall. Electric motor repair, model repair specifications for low voltage motors, and motor repair tech brief were produced by the u. Troubleshooting home electrical problems can be a serious headache. Electric motor repair rosenberg, robert, hand, august on. Tap the first diamond for extra electric motor troubleshooting steps and tips.
The skills and knowledge covered by this system will prove invaluable for industrial maintenance technicians or anyone working in a field that uses ac andor dc motors. This electric motor repair course is designed to provide the student with practical information for winding. Learn electrical safety in the home including proper electrical grounding, blown fuses and other safety tips. Slow acceleration or refusal to starting of an ac motor, overheating and noise. Replace the motor s protector with a new one of the same rating.
Disconnect power to the motor before performing service or maintenance. Contrary to what you may be thinking just n o w, your last name doesnt have to be edison in order to p r operly service the motors shown in the following pages. The tstrainer electrical troubleshooting course is great for individuals just starting out wanting to learn on their own. If your home doesnt connect to a sewer, theres a chance youll encounter a septic system problem at some point during your life there.
Electric motor maintenance and troubleshooting by augie hand. The course also teaches students how to troubleshoot two and. 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. These hybrid vehicles include the honda insight, honda civic hybrid, and toyota prius. Includes a motor connection box to practice handson skills such as troubleshooting faults in a dc motor and ac singlephase and threephase motors, evaluating dc electric motor commutator and brush health, and using a multimeter to test an ac motor startrun capacitor. If the motor does not run, the machine or device will not function. Electric dryer repair is never any fun, but it can be necessary from time to time. If you can diagnose the problem, you may save on repairs and kn.
Carefully clean contacts in handle and on shaft carefully clean contacts on case, motor and batteries carefully clean contacts on motor and end cap clean and inspect. Bearings are located at both ends of the motor which are sometimes called bell housings or end bells. When electric motor problems are detected early, operational conditions can sometimes be altered to return the machines to an efficient state and prevent further damage. This electric motor repair shop procedures manual is for use by ima personnel engaged in electric motor repair. Pictures, electrical schematic diagrams and illustrated part breakdowns are included in the manual to help the mechanic complete the repair job successfully. Jul 21, 2017 small electric motor repair by josh weber updated july 21, 2017 troubleshooting a small electric motor that fails is most effective when you follow a stepbystep procedure that rules out potential causes and helps isolate defective circuits or components. 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. The higher the capacitance of the capacitor the more energy it can store.
Electric motor repair, model repair specifications for low voltage motors, and. Prod maintenancetroubleshooting troubleshooting guide. Electric motor maintenance and troubleshooting, 2nd. These motors have fewer parts and are more sturdily built than their singlephase counterparts. Evinrude repair manuals teach you how to properly test electrical and mechanical components so as to determine a problem and its corrective action. I like getting my hands dirty with diy home projects, they are a lot of fun. Locate the slideout electrical controller refer to your dealer or rv manufacturer for location. Although reliable, issues such as mounting problems, lubrication failures, overloading and other issues can shorten service lifetime. Reducing electrical noise for detailed information on reducing electrical noise in your system, refer to the current compumotor catalog. Have your badge scanned at the door attend 90% of this presentation fill out the online evaluation for this session. Jan 10, 2005 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. Maintenance and troubleshooting of electric motors. For version 2, remove one of the motor leads, either the motor i or motor ii lead from the controller.
The only userserviceable parts on an ac motor are the brushes and the bearings. Electric motor fails to start koldwater technologies, llc. Cars and other products with electric motors are becoming increasingly popular, and thats not necessarily a bad thing. Participants learn the basics of electric motors including how to maintain and troubleshoot common problems found in the workplace. Heres everything a homeowner should know about electricity. In different operating conditions, electrical devices will. A damaged or burnt out capacitor may hold only a fraction of the energy needed for the motor if its capacitance is low. Model repair specifications for low voltage induction motors. In this video we will present you with the full repair process of an electric motor including. The whole history of the development of electric motors minn kota is associated with the constant desire of the companys engineers to develop and implement the most innovative solutions and technologies. Local electrical codes should be carefully checked before final selection is made. Between outlets that suddenly stop working to flickering lights, many homeowners do not know where to start when facing electrical issues.
Troubleshooting problems on your ac motor is relatively straightforward, and providing you have reasonable doityourself abilities, repairing it is not too difficult. Apr 24, 2017 a bad motor capacitor may cause starting problems or could shut off the motor while running. The importance and scope of the electric motor in modern life is attested to by the fact that electric motors, numbering countless millions in total, convert more energy than do all our passenger. For version 1, unplug the 6 pin wiring harness from the controller. Some standard lincoln electric motors are also capable of pws, yds or both as. If motor problem is not found, and you are not led to another electric motor troubleshooting. Maintenance and troubleshooting of electric motors esr motor. This concept allows any erner model to be disassembled and repaired according to specific requirements of the repair job. This webinar is all about electric motors and how to get a better understanding of them. Troubleshooting guide troubleshooting is a problem solving strategy used to trace and correct faults in the outboards mechanical or electrical system. Here are stepbystep instructions for how to troubleshoot and repair it yourself. Pay particular attention to all notes, cautions and warnings.
The course teaches students to identify motor malfunctions by recognizing problematic symptoms and applying proven methods in correcting these problems. Battery and warranty troubleshooting and diagnostics read all of section b and this section before attempting any procedure. Electric motor troubleshooting multimedia courseware m45129. About this book a fully uptodate, handson guide to electric motors keep electric motors running at peak performance. Mechanical problems such as worn bearings or a broken pinion could cause a mechanical overload. Feb 28, 2021 acdc motors installation, principle of operation, troubleshooting and repair the branch circuit represents the last step in the transfer of power from the service or source of energy to utilization devices. 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. 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. The electric motor troubleshooting problems and solutions diamonds below for motor fails to start, from left to right, are listed in order most common to less common.
Department of energys office of industrial technologies oit with input from trade associations, consulting companies, manufacturers, nonprofit corporations, and others. He owned an electric motor repair shop for a number of years, and he taught the electric motor repair course at southwestern technical institute. The bearings allow the shaft or rotor assembly to turn freely and smoothly in the frame. Read our best advice for handling electrical repairs in your home and how to hire a professional you can trust. Electronic component testing sometimes parts need to be electronically tested to measure or check the quality, reliability or performance of a component of a outboard motor.
The ball bearings used in the compumotorsupplied motors. The electric motor is, of course, the very heart of any machine it drives. A noisy dryer is not only a nuisance, but can signal a larger problem. Once the problem has been uncovered, a determination may be made to repair or replace. Within these categories are numerous types, each offering unique abilities that suit them well for specific applications. Most motors are designed to run in an ambient temperature of less than 40c. The cost of maintaining electrical motors can be a significant amount in the budget item of manufacturing and mining industries. This course gives you a thorough understanding of electrical motor s protection, control and maintenance and gives you the tools to maintain and troubleshoot electrical motors. Predictive maintenance, motor troubleshooting and diagnostic testing. Threephase motors are normally used in commercialtype operations. Troubleshooting and repairing electric water heaters dengarden home and garden.
Small electric motor repair by josh weber updated july 21, 2017. This course covers the operation and maintenance of ac and dc motors, including 3phase, dual voltage and multiple speed motors. If we got flipped 10,000 times, we might have issues too. The frequency of routine service varies widely between applications. Operators must understand failure modes and potential for. Gasoline electric hybrid vehicles that are not powered primarily by an electric motor are not qualified electric vehicles. This pocket manual is designed for one purpose to make it simple for you to install, maintain and troubleshoot century pool and spa motors. Electric motor maintenance and troubleshooting, 2nd edition. How to troubleshoot an electric motor capacitor problem.
Download pdf of electric motor maintenance and troubleshooting second edition by augie hand for free pdf free download. For maximum effectiveness, this manual should be used as a supplement to any ongoing onthejob training in the ima electrical repair shop. Common causes for electric motor failure motor failure. Now lets consider a motor that starts and runs, but is noisy or. A practical book on the winding, repair, and troubleshooting of ac and dc motors and controllers by rosenberg, robert and a great selection of related books. Inspect stator for defects, or loose or cut wires that may cause it to go to. Electric motor system diagnostics electric motor system diagnostics richard scott alltest pro, llc this session is eligible for 1 contact hour. Electrical troubleshooting, plc troubleshooting training. As a result these motors are less prone to malfunctions and tend to operate. Determine if the problem is in the motor itself or in the driven equipment. Some standard lincoln electric motors are also capable of pws, yds or both as indicated in the following chart. For each motor application, factors such as driven load. They offer drivers plenty of advantages compared to traditional engines, ranging from saving money to requiring minimal. Electric motor maintenance and troubleshooting second edition by.
The first training module is an introduction to electrical troubleshooting with. Mar 29, 2019 many electric motor failures are caused by bearing failures. Failures in threephase stator windings, rewind scenarios when a motor fails. All motors are suitable for full voltage or acrosstheline start. For these hours to appear on your certificate, you must. Both mechanical and electrical test equipment and tools are discussed with detailed.
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