Motor fails to start upon initial installation. Don't worry. 2. DC and Brushless motors have similar curves—low speed and high torque—but Brushless motors dramatically exceed the torque levels of all other motor options at similar frame sizes. IMPORTANT Thank you for purchasing this brand new Eagle Hydraulic Components® power pack ! N'��)�].�u�J�r� ... Brushes and Commutators (DC Motors) 1. Replace switch. ����jQ���9c� !S?�L�-v�����N�5���&���7�ܑ0k #�������ne ,��� ��Pi׽������[�҃"����x�G�>��+{��I�_���������S�f�p���2�?��Y��eoMzn����X��������O��5��� C�� ��v��n�� �:��{�$�Rj�ȫ��]�~{�랇D�8 PP�I(�d�bŠ߫��Pq�^�#�S�9��O( �;u��4o f�:�1��ܯ�O�s'g�λ�J�<7I��4�-M �fU��|���-��}d�j�"���T�u��O��˺�b��L��e����;?�R+���מ��^�F�>8 For example, the motor curve illustrated in Figure 1 was created using a rapid test on a motor dynamometer. DC motors were the first form of motor widely used, as they could be powered from existing direct-current lighting power distribution systems. 0000005500 00000 n Regular inspections prioritizing these three goals, and adequate maintenance work, will ensure that DC motor units perform reliably in the long term. Gather up any background material you may have on hand and then use your senses to inspect the site. H�b``�f``�� ��� � bI(f`c��.��Z0��C[C����&0T:3��2p�2�/1ޠ�� խ���+��� � ��� endstream endobj 35 0 obj 89 endobj 9 0 obj << /Type /Page /Parent 2 0 R /Resources 10 0 R /Contents [ 15 0 R 17 0 R 19 0 R 21 0 R 23 0 R 26 0 R 28 0 R 30 0 R ] /MediaBox [ 0 0 612 792 ] /CropBox [ 0 0 612 792 ] /Rotate 0 >> endobj 10 0 obj << /ProcSet [ /PDF /Text ] /Font << /F1 24 0 R /F2 11 0 R >> /ExtGState << /GS1 32 0 R /GS2 33 0 R >> /ColorSpace << /Cs5 12 0 R /Cs9 13 0 R >> >> endobj 11 0 obj << /Type /Font /Subtype /Type1 /Encoding /WinAnsiEncoding /BaseFont /Helvetica-Bold >> endobj 12 0 obj [ /CalRGB << /WhitePoint [ 0.9505 1 1.089 ] /Gamma [ 2.22221 2.22221 2.22221 ] /Matrix [ 0.4124 0.2126 0.0193 0.3576 0.71519 0.1192 0.1805 0.0722 0.9505 ] >> ] endobj 13 0 obj [ /Separation /PANTONE#20307#20CV 12 0 R 31 0 R ] endobj 14 0 obj 2095 endobj 15 0 obj << /Filter /FlateDecode /Length 14 0 R >> stream In other words, when a magnetic field and an electric field interact, a mechanical force is produced. We figured out the problem. Three phase induction motors are one of the most popular electric motors commonly found in processing plants or any manufacturing concern. The correct voltage is present at X1 and X2, the contactor is not energized and the OL is not tripped, then the problem is in the control circuit. 0000060249 00000 n Some of its common problems include failure to start, motor overheating, noise, and vibration. Disconnect power to the motor before performing service or maintenance. An imprint of the brush, signs of arcing or uneven … �V��)g�B�0�i�W��8#�8wթ��8_�٥ʨQ����Q�j@�&�A)/��g�>'K�� �t�;\�� ӥ$պF�ZUn����(4T�%)뫔�0C&�����Z��i���8��bx��E���B�;�����P���ӓ̹�A�om?�W= Maintenance Troubleshooting: Motors & Motor Controls is part three of the Maintenance Troubleshooting five-part training series. 0000008704 00000 n A DC Motor „Without mechanical Brushes and Commutator „ Permanent Magnet Rotor ... Infinity Troubleshooting Guide •Example: Inducer Motor –Use Troubleshooting Guide –Check voltages •Line, PW and Feedback voltages. Gather up any background material you may have on hand and then use your senses to inspect the site. startxref Custom Search . 0000001628 00000 n 588 0 obj <> endobj Check the brush length. A capacitor consists of two metal, parallel plates encased within a plastic exterior. 0000005990 00000 n xref Possible power surge to motor, caused by lightning strike or other high transient voltage. 0000001323 00000 n H���yTSw�oɞ����c [���5la�QIBH�ADED���2�mtFOE�.�c��}���0��8�׎�8G�Ng�����9�w���߽��� �'����0 �֠�J��b� Starting switch may be defective, preventing the motor from coming out of start winding. Always keep hands and clothing away from moving parts. 0000053289 00000 n 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. 3 After a service history review, a visual inspection should be performed to identify any obvious wear, blo… Any imbalance can cause a problem. Verify that ambient does not exceed motor’s nameplate value. 2 DC Motors General Description The products described in this publication are designed specifically for use on rectified power. Figure 2. x�b```b``��������A��b�, 0000000016 00000 n • If no voltage is present, then check that all motor harness and control box plug connections are tight and in place. See Figure 3-2. A damaged or burnt out capacitor may hold only a fraction of the energy needed for the motor if its capacitance is low. Before purchasing this product, make sure you own The Starter Kit H-111A as it is required to own this kit. Because of the concealed nature of these motors, it can be highly difficult to complete any repairs or maintenance on them without having to pull whatever it is powering apart. 0000002088 00000 n troubleshooting electric motors. Check the outside of the motor. Black spots on the collector rings must be removed by rubbing lightly with fine sandpaper. Hands-on Kit. x�bbrd`b``Ń3� ���ţ�1����` >� T @}2ضj�:+����*5�/�l�4�����W�� y� �27n̺x�8�ٺ[�Ӱ9+�����9�}�WsW�,aG�6C���(K�:��HY����'Y� Starting switch may be defective, preventing the motor from coming out of start winding. 0000002595 00000 n DC Motors: Maintenance & Troubleshooting is part two of the DC Motors two-part training series. Motor Trouble-Shooting Chart 10/13/00 (continued) Motor may have too much endplay. Though you might try to do some of the troubleshooting with the drive and/or motor powered off, it's likely that you will have to do most of the testing with the power on. If the motor is a replacement, verify that the rating is the same as old motor. 2y�.-;!���K�Z� ���^�i�"L��0���-�� @8(��r�;q��7�L��y��&�Q��q�4�j���|�9�� 0000002880 00000 n The course explains the fundamentals of DC motor maintenance, including proper lubrication, brush replacement, and inspection, along with the correct troubleshooting techniques. G�J��pz,G�S�� ��.M]p�qC=�;1�$q�s���N�i�`$zX9�{��c��PL!��1�U�|�FÅnB�E��p;�C͆�Fg��)-��Fg���>S��`T'��8��L���u�֫�NWqR[Ы�Ʊk��캨�b_f������x��إp8�]_��G�aR���H���GM"�ᾴu���+wEa��T��������聽;k��[�FIvLF w85���/� ��� 0000006034 00000 n It should be less than the full load rating stamped on the nameplate (only true for three phase motors). ��78'�ro���c�� Ů��xݜ�6��Ɂ];"��wYvja���.E�{"�/��F$��(�#�Ѿ�����Zj�P��.yp��&��Ҷ�1HUo��� �%��W$����Zd�g��RO�˧U�2��(hԣ-�VI�o�tV5���i��)�m��O��&����S{��Y�ӣ����$-�j[�S#Ȋxi���K����;S�Y����K��˃��º���H$�p�bݕچ����X�5z�}\� �(K�>s�jph��b�$Rm�:Z>;xL1 sc�}�Ў�z�!�=��Mc ����QK2R��C�m Y@ Y� �F4JR��e�z��ne�pB`]. A General Guide to DC Motor Maintenance A D.C. motor maintenance program is a preventative and corrective maintenance schedule that covers inspections, cleaning, testing, replacement and lubrication tasks that are necessary to ensure the proper operation of D.C. motors and associated equipment. endstream endobj 608 0 obj<>/Size 588/Type/XRef>>stream Capacitance is measured in microfarads. Principle of DC Motor. DC motor troubleshooting, inspection and Learn to repair of DC motor Brushes and Commutators . Got a motor down? 0000001787 00000 n Troubleshooting Electric Motor Problems Made Easy for You. 0000000750 00000 n Typical inspections when troubleshooting DC motor problems or doing preventative maintenance. 2 DC Motors General Description The products described in this publication are designed specifically for use on rectified power. A DC motor's speed can be controlled over a wide range, using either a variable supply voltage or by changing the strength of current in its field windings. Course objectives include: Read and understand motor wiring diagrams; Connect a motor properly and identify … For this scenario, the fault is an open circuit fault and inside the panel. 1 - 1956. 0000001133 00000 n The three-phase incoming AC power is rectified to a rippling DC voltage. Below is an overview of the most common problems and the fixes to get your drive and motor working properly. %PDF-1.3 %���� If not replace. endstream endobj 589 0 obj<>/Outlines 24 0 R/Metadata 74 0 R/PieceInfo<>>>/Pages 73 0 R/PageLayout/OneColumn/OCProperties<>/StructTreeRoot 76 0 R/Type/Catalog/LastModified(D:20090224210712)/PageLabels 71 0 R>> endobj 590 0 obj<>/PageElement<>>>/Name(HeaderFooter)/Type/OCG>> endobj 591 0 obj<>/Font<>/ProcSet[/PDF/Text]/Properties<>/ExtGState<>>>/Type/Page>> endobj 592 0 obj<> endobj 593 0 obj[/ICCBased 603 0 R] endobj 594 0 obj<> endobj 595 0 obj<> endobj 596 0 obj<>stream Then conduct resistance, fuse, and motor tests to help pinpoint the cause of the failure. When a current-carrying conductor is placed in a magnetic field, it experiences a torque and has a tendency to move.. Before you start using your new power pack, please ensure that you read carefully and understand these owner’s instruction and make sure that you always operate this equipment in a safe manner. Maintenance and Troubleshooting of Electric Motors Reliance Electric Posted 1-10-05 Motor Maintenance - SCHEDULED ROUTINE CARE Introduction The key to minimizing motor problems is scheduled routine inspection and service. It's always better to understand the basic operation of an AC drive before proceeding with troubleshooting and maintenance. The higher the capacitance of the capacitor the more energy it can store. The widespread use of motors in fields ranging from manufacturing to household applications means that downtime due to a malfunctioned motor can result in a great loss of productivity. Motor Wiring Diagram D.C. Motor Connections Your motor will be internally connected according to one of the diagrams shown below. If not removed, these spots cause pitting that requires regrinding the rings. 0000004539 00000 n 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. w/�,a��ia*�cY٢(�U�P,ɲD穇�u;A K4� The DC Motor Curve DC motor performance curves can be generated under various conditions. If there is an imbalance of more than 10% between any of the phases, the reasons could be several, which must be located and set right immediately to avoid further mishaps. Verify that voltage to the motor is within 10% of the nameplate value. Motor Trouble-Shooting Chart 10/13/00 (continued) Motor may have too much endplay. 0000060008 00000 n TROUBLESHOOTING GUIDE 12 & 24 volt DC power units Distributed by : Revision 1.0-2013 . 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. If the motor has any of the following issues on the outside, they may be problems that can shorten the life of the motor because of previous overloading, wrong application, or both. "F$H:R��!z��F�Qd?r9�\A&�G���rQ��h������E��]�a�4z�Bg�����E#H �*B=��0H�I��p�p�0MxJ$�D1��D, V���ĭ����KĻ�Y�dE�"E��I2���E�B�G��t�4MzN�����r!YK� ���?%_&�#���(��0J:EAi��Q�(�()ӔWT6U@���P+���!�~��m���D�e�Դ�!��h�Ӧh/��']B/����ҏӿ�?a0n�hF!��X���8����܌k�c&5S�����6�l��Ia�2c�K�M�A�!�E�#��ƒ�d�V��(�k��e���l ����}�}�C�q�9 trailer Got a motor down? n�3ܣ�k�Gݯz=��[=��=�B�0FX'�+������t���G�,�}���/���Hh8�m�W�2p[����AiA��N�#8$X�?�A�KHI�{!7�. Check that the spring tension on all the brushes are about equal. Remove the load from the motor and inspect the amp draw of the motor unloaded. Your DC motor is not working? DC Motor Trouble-Shooting Chart Caution: 1. 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