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. 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. First, disconnect all power to the motor before beginning work, including the circuit breaker. This article describes ac electrical motor troubleshooting. Downloadelectric motor repair pdf robert rosenberg. Electric motor maintenance and troubleshooting, 2nd edition. Troubleshooting involves working with live voltages. Download it once and read it on your kindle device, pc, phones or tablets. Ac electric motor troubleshooting guide test procedures. 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. Recommended practice for the repair of rotating electrical apparatus.
Some standard lincoln electric motors are also capable of pws, yds or both as indicated in the following. Electric motor maintenance and troubleshooting, second edition explains in detail how all types of ac and dc motors work. Motor and motor control troubleshooting techniques. Use features like bookmarks, note taking and highlighting while reading electric motor maintenance and troubleshooting, 2nd edition. The frequency of routine service varies widely between applications. Electric motor troubleshooting questions about electric. Electric motor troubleshooting flowchart koldwater. However, it is possible to perform electric motor troubleshooting and repair safely. Therefore, motor troubleshooting involves the entire. Electricity is passed to the windings in the armature via carbon brushes. Some standard lincoln electric motors are also capable of pws, yds or both as indicated in the following chart. Oct 07, 2016 in this video we will present you with the full repair process of an electric motor including.
Electric motor maintenance and troubleshooting, 2nd edition kindle edition by hand, augie. Maintenance safe maintenance practices performed by qualified personnel are imperative. Below are some of the frequently asked questions regarding electric motor troubleshooting that have been answered by the experts. Selected office of industrial us department of energy. Working on an electric motor carries a risk of fatal electric shock. The capacitor is a commonly replaced part for a motor or compressor that wont start.
See the motor nameplate for proper connection diagrams. Second, discharge the capacitors to avoid electric shock. 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. Capacitors are commonly found on furnaces, air conditioning units, refrigerators, and washing machines.
In the case of standard motors, repair may not always be the best option. This section describes how the charts are structured and what information is provided to assist the systemcomponent engineer. Pc line pclw310 driver c program files hewlettpackard digital imaging bin hpfccopy. Maintenance and troubleshooting of electric motors esr motor. 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. Check the source of power, overload, fuses, controls, etc. These motors usually function without many problems, but they do require maintenance and repairs at times. Electric motor repair robert rosenberg, august hand.
Starter the starter motor drives the engine through a pinion gear that engages the ring gear on the flywheel. If you are not comfortable with this process, do not attempt it. Download file pdf electric motor repair manuals electric motor repair manuals how to perform a vehicle check up keep your car in peak condition with this stepbystep car checkup how to repair electric motor hi, today i will show you how to repair 1. Electric motor drive installation and troubleshooting atp.
An electric motor is an extremely handy device which has multiple uses. Free online electric motor troubleshooting flowchart tool. Before starting maintenance procedures, be positive that. How to troubleshoot motors and drives, starting at the inputs. You should inspect all mechanical parts of the motor regularly to ensure. I disassembled the electric motor so i will know thats the reason why it. Be sure required safety guards are in place before starting. Refer to the wiring diagram to verify the motor is wired correctly. A motor placed in storage may or may not work, regardless of its physical appearance. This industryleading resource begins with electric motor principles, power requirements, and control methods and focuses on the safe operation. Consult your computer or terminal emulator user manual for instructions on. Troubleshooting is a process that starts at the source of input and ends at the output.
Troubleshooting problems on your ac motor is relatively straightforward, and providing you have reasonable doityourself abilities, repairing it is not too difficult. The motor fault symptoms are in order of which is most common so you can determine how to. Participants learn the basics of electric motors including how to maintain and troubleshoot common problems found in the workplace. Electric motor drive installation and troubleshooting is designed for technicians in the field responsible for installing, programming, troubleshooting, and retrofitting electric motor drives. All motors are suitable for full voltage or acrosstheline start. Check the source of power, overload, fuses, controls, etc 2. Download pdf of electric motor maintenance and troubleshooting second. No matter how urgent the problem and motor failure can cause some very urgent problems always develop a plan of attack before you start repair work. 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. Always keep hands and clothing away from moving parts. 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. Disconnect power to the motor before performing service or maintenance. Evinrude repair manuals are available as instant download portable document format pdf or traditional paperback versions.
A factory can kick out a motor winding in minutes when making hundreds. I dont miss the stress of trying to get customers motor repaired in a timely manner. This course covers the operation and maintenance of ac and dc motors, including 3phase, dual voltage and multiple speed motors. All electric motors contain copper windings on the armature, and magnets that are fixed to the outer casing. Maintain the systems components to ensure smooth, efficient operation. When using magnetic metal conduit, all three input leads. The efficiency you gain in every aspect of your company from job costing to accounting to scheduling employee labor brings. Electric motor repair equipment whitelegg machines. A fully uptodate, handson guide to electric motors. Electric motor maintenance and troubleshooting by augie hand. Discussion of motor bearing maintenance for optimizing reliability. In this article we provide a diagnostic guide to determine and repair problems with electric motors.
Check manual release to be sure it operates properly. 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. The modern electric motor installation the individual motor drive has practically replaced all other types. Hand has been presenting seminars to electric motor repair shops and large. The only userserviceable parts on an ac motor are the brushes and the bearings. Elecric motor repair by robert rosenberg goodreads. Electric motors, gearmotors and drives site search sub motor troubleshooting chart caution. 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. This latest edition features a new chapter on solid state control and undated technology on microprocessor controls.
Whitelegg now offer an unrivalled range of equipment to the electric motor repair industry. Complete handson approach to the repair and control of ac and dc motors. The top countries of suppliers are china, india, and taiwan, china, from which the percentage of electric motor repair tools supply is 99%, 1%, and 1% respectively. 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. Electric motor repair and troubleshooting techniques. Maassen, erik, maintenance tips for electric motor bearings. When a motor fails, it is often difficult to see why it failed just by looking at it. Lubricate the bearings only when scheduled or if they are noisy or running hot.
Send in your aircraft starter and we can troubleshoot, repair, or replace. The magnets repel the electrical energy and force the armature in the motor to rotate. If you want to learn about how to repair or troubleshoot any electric motor then, this videos are. A wide variety of electric motor repair tools options are available to you, there are 862 suppliers who sells electric motor repair tools on, mainly located in asia. Do not lift both the motor and driven equipment with the motor lifting means. Only qualified personnel or an experienced electrician should attempt to repair this unit.
711 997 439 312 895 39 253 796 366 1655 1631 1466 78 633 87 882 1368 1547 508 1114 227 307 33 1311 1508 916 1435 82 935 735 200 130 1335 211 713 1484 836 241 559 1019 560 1321 950 1335 864