Dec 12, 2012 breakdown causes by electric motor failures always happen in our operation due to of 2 major factors. Arc automatic radio control 08 rpicon 20090710 17 02. This article was prepared for and supported by fluke corp. 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. If the motor is nuisance tripping because of low voltage it may only trip during the part of the day when electrical usage is the. The frequency of routine service varies widely between applications. This article describes ac electrical motor troubleshooting. Read the following passages to understand more about recognizing and troubleshooting these problems. Mar 29, 2019 check that the windings are not open or blown. Airflow if speed is constant, cfm changes with static pressure. Some standard lincoln electric motors are also capable of pws, yds or both as. The above electric motor troubleshooting chart will get you down to the specific failure cause like a capacitor or.
Electric motor maintenance and troubleshooting, second edition explains in detail how all types of ac and dc motors work. An electric motor operates in a simple and reliable manner, and this can sometimes lead to overlooking the daytoday maintenance. Model repair specifications for low voltage induction motors. We can analyze your equipment for repair or come to you with our field service crew. Motor troubleshooting chart electric motor warehouse. Oct 11, 2017 an electric motor operates in a simple and reliable manner, and this can sometimes lead to overlooking the daytoday maintenance. Department of energys office of industrial technologies oit with input from trade associations, consulting companies, manufacturers, nonprofit corporations, and others. These instruments are used to measure voltage,current, resistance. The only userserviceable parts on an ac motor are the brushes and the bearings. Typical instruments used for troubleshooting motor operation problems include a multimeter, clampon meter,insulation resistance meter, and infrared thermometer.
Do not lift both the motor and driven equipment with the motor lifting means. If not, check supply circuitry, breakers and condition of the motors power cord. Electric motor repair rosenberg, robert, rosenberg, john, hand, august on. Ge ecm motor technology and troubleshooting presented by the rlcs engineering product field support. If the motor has been operated successfully, problems such as incorrect hookup or internal misconnection can be ruled out immediately.
This electric motor repair course is designed to provide the student with practical information for winding. Franklin electric submersible motors are a waterlubricated design. It is a good practice to not leave the battery charger plugged into the scooter for more than 12 hours due to the. If not, check supply circuitry, breakers and condition of the motor s power cord.
Hand has been presenting seminars to electric motor repair shops and large. Many simple across the line singlephase and 3phase motors used in household appliances and industry respectively can be checked simply by changing the range of the ohm meter to the lowest offered r x 1, zeroing the meter again, and measuring the resistance between the leads of the motor. Breakdown causes by electric motor failures always happen in our operation due to of 2 major factors. Toland is the foreman at buzzell electric works in san francisco. The motor specified voltage must be present on all three phases. This motor was new but after some days it just stops moving and we checked from. A fully uptodate, handson guide to electric motors.
As with all modifications on electric or electronic equipment, make sure that you unplug. Motorguide tour trolling motors operation and maintenance manual pdf, eng, 83. Motor and motor control troubleshooting techniques. Motorguide r3 trolling motors operation and maintenance manual pdf, eng, 1. A good battery is the most expensive part of a hoverboard, and the cost of replacing it with a new one is sometimes frightening. Examine the motor s electrical connections and terminals.
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. 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. An electric motor that is well cared for will last for years and provide you with ongoing reliability. How is the motor started across the line, soft start, adjustable speed drive. Try charging the battery pack for 8 hours and then see if that helps. Electrical troubleshooting shopsmith mark v motors youtube. After repair, a full capacity and signaling test is performed. The specialists of the service center will make a qualitative diagnosis and repair of your battery with the replacement of the failed components. Introduction to electric motor system diagnostics the reliability and energy consumption of electric motors and the systems they drive has a direct financial impact to industrial and commercial enterprises we will discuss the financial justification for a motor testing program, a general discussion of deenergized and energized. Ac electric motor troubleshooting guide test procedures. Troubleshooting electric motor problems made easy for you. Motorguide varimax operation and maintenance manual pdf, eng, 3.
In this video, you will know how to open a 25kw electrical motor and find out what is the problem with this motor. If your dynaserv is faulty, you must return the drive and motor for replacement or repair. How to troubleshoot a 3phase electric motor hunker. Take input voltage to the motor using the volt ohmmeter. These manuals are specifically made up for the individual panel, and are generally sufficient for any or all problems which may be encountered. All motors are suitable for full voltage or acrosstheline start. Troubleshooting problems on your ac motor is relatively straightforward, and providing you have reasonable doit. 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. This course covers the operation and maintenance of ac and dc motors, including 3phase, dual voltage and multiple speed motors. Electric scooters that have not been charged for over 3 months will have partially discharged battery packs which may not provide enough power to run the scooter.
These motors usually function without many problems, but they do require maintenance and repairs at times. Note this is the same password you use to save a configuration in avaya manager program. Maintenance safe maintenance practices performed by qualified personnel are imperative. Before starting maintenance procedures, be positive that. Disconnect power to the motor before performing service or maintenance. Incorrect reassembly may result in a risk of electric shock when the unit is subsequently used. It is mechanical component defect and electrical circuit failure.
Record relevant motor nameplate data hp, rpm, rated voltages and currents for armature and. As a safety feature most functions of the scooter including power to the motor may be disabled when the charger is connected to the scooter. Some of its common problems include failure to start, motor overheating, noise, and vibration. Motor will make a humming noise and the circuit breaker or fuse will trip. Serial number location error and warning messages set up speed and performance rear hub axle shaft, bearing and seal disassembly using hand held diagnostic unit troubleshooting.
The modern electric motor installation the individual motor drive has practically replaced all other types. Troubleshooting problems on your ac motor is relatively straightforward, and providing you have reasonable doityourself abilities, repairing it is not too difficult. Download pdf of electric motor maintenance and troubleshooting second. Some standard lincoln electric motors are also capable of pws, yds or both as indicated in the following chart. Maintenance and troubleshooting of electric motors esr motor. These instruments are used to measure voltage,current. Troubleshooting and testing electric scooters electric bicycles and other battery powered items. An electric motor is used for producing mechanical energy in various applications. An electric motor is an extremely handy device which has multiple uses. Examine the motors electrical connections and terminals.
Motor maintenance and inspection since this motor does not use wearprone parts, the following daily inspection is. Essential for anyone who needs to buy, install, troubleshoot, maintain, or repair small to industrialsize electric motors, this practical guide contains new information. Electric motor repair, model repair specifications for low voltage motors, and motor repair tech brief were produced by the u. The key to reliable operation of motors is having a checklist in place in the form of a preventive maintenance. Jun 01, 2017 in this video, you will know how to open a 25kw electrical motor and find out what is the problem with this motor.
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. Electric motor maintenance and troubleshooting by augie hand. Electric motor maintenance and troubleshooting, 2nd. Small electric motor repair by josh weber updated july 21, 2017. See the motor nameplate for proper connection diagrams.
Electric heating r,w1,w2 24vac 0 24vac 0 0 1speed ac, cooling r,yy2,g 0 0 24vac 12vdc 0 2speed ac, low cooling r,y1,g 0 0 24vac 0 12vdc. Dec 28, 2015 jacob anderson, the nations leading shopsmith mark v headstock repair expert, shows how to check a shopsmith mark v motors with a multimeter and a capacitor. If you find a phasetoground short, a motor shop may be able to do an inplace repair for a large 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. Maintenance or repair of this unit that involves disassembly of the cabinet should be done only by a qualified service person. Ebike a5ah28 download pdf user manual ebike a6ah26 download pdf user manual zhuhai shuangye electronic technology co. Motorguide r5 trolling motors operation and maintenance manual pdf, eng, 1. 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. Always keep hands and clothing away from moving parts. The motorspecified voltage must be present on all three phases.
The fill solution consists of a mixture of deionized water and propylene glycol a nontoxic antifreeze. However, you might end up needing to rewind or replace it. Lubricate the bearings only when scheduled or if they are noisy or running hot. Therefore, motor troubleshooting involves the entire. In business since 1948, we are hendersons only electric motor sales and service center. Jacob anderson, the nations leading shopsmith mark v headstock repair expert, shows how to check a shopsmith mark v motors with a multimeter and a capacitor. Electric scooter and bike troubleshooting repair manual.
Electric motor troubleshooting questions about electric. Dc motor troubleshooting based on the easa technote troubleshooting dc motors always. Below are some of the frequently asked questions regarding electric motor troubleshooting that have been answered by. Participants learn the basics of electric motors including how to maintain and troubleshoot common problems found in the workplace. Electric motor maintenance and troubleshooting, 2nd edition augie hand. Electric motors, gearmotors and drives site search sub motor troubleshooting chart caution. A factory can kick out a motor winding in minutes when making hundreds. Troubleshooting and testing electric scooters electric. Be sure required safety guards are in place before starting.
1654 259 1458 124 1125 25 432 1227 379 1664 1282 1532 812 1221 376 1102 1656 563 1521 1288 233 1623 1267 1528 873 1402 1438 1502 378 924 596 1290 361 1651 1556 1203 1530 400 1555 427 364 185 1232 977 42 1269 1097 59 1440 1349 709