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BALDOR MN409 Large AC Motors Handbook
http://www.manuallib.com/baldor/mn409-large-ac-motors-handbook.html
This manual contains general procedures that apply to Baldor Motor products.
Be sure to read and understand the Safety Notice statements in this manual.
For your protection, do not install, operate or attempt to perform maintenance
procedures until you understand the Warning and Caution statements. A
Warning statement indicates a possible unsafe condition that can cause harm
to personnel. A Caution statement indicates a condition that can cause
damage to equipment.
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Table of Contents
Related Manuals for Baldor Global TEFC Series
Summary of Contents for Baldor Global TEFC Series
- Page 1 BALDOR MN409 Large AC Motors Handbook http://www.manuallib.com/baldor/mn409-large-ac-motors-handbook.html This manual contains general procedures that apply to Baldor Motor products. Be sure to read and understand the Safety Notice statements in this manual. For your protection, do not install, operate or attempt to perform maintenance procedures until you understand the Warning and Caution statements.
- Page 2 Large AC Motors Global Series TEFC/TEAO Horizontal Mounting Installation & Operating Manual 6/08 MN409 This Manual:http://www.manuallib.com/baldor/mn409-large-ac-motors-handbook.html...
- Page 3 Any trademarks used in this manual are the property of their respective owners. This Manual:http://www.manuallib.com/baldor/mn409-large-ac-motors-handbook.html...
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Page 4: Table Of Contents
............4−6 MN409 Table of Contents i This Manual:http://www.manuallib.com/baldor/mn409-large-ac-motors-handbook.html... - Page 5 ................A−3 ii Table of Contents MN409 This Manual:http://www.manuallib.com/baldor/mn409-large-ac-motors-handbook.html...
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Page 6: General Information
This manual describes general guidelines that apply to most of the motor products shipped by Baldor. If you have a question about a procedure or are uncertain about any detail, Do Not Proceed. Please contact your Baldor distributor for more information or clarification. - Page 7 CSA listed logo. Specific service conditions for these motors are defined in NFPA 70 (NEC) Article 500. WARNING: UL Listed motors must only be serviced by UL Approved Authorized Baldor Service Centers if these motors are to be returned to a hazardous and/or explosive atmosphere. WARNING: This equipment is at line voltage when AC power is connected.
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Page 8: Receiving
Baldor distributor or an Authorized Baldor Service Center. Receiving Each Baldor Electric Motor is thoroughly tested at the factory and carefully packaged for shipment. When you receive your motor, there are several things you should do immediately. -
Page 9: Handling
(See Bearing Lubrication for proper type). Unpacking Each Baldor motor is packaged for ease of handling and to prevent entry of contaminants. To avoid condensation inside the motor, do not unpack until the motor has reached room temperature. -
Page 10: Section 2 Installation & Operation
A few thick ones are preferred over many thin ones. Space should be allowed between the base and foundation for grouting. The concrete surface should be roughed to provide a good bonding surface. MN409 Installation & Operation 2-1 This Manual:http://www.manuallib.com/baldor/mn409-large-ac-motors-handbook.html... -
Page 11: Pre−Installation Checks
Doweling & Bolting After proper alignment is verified, dowel pins should be inserted through the motor feet into the foundation. This will maintain the correct motor position should motor removal be required. (Baldor motors are designed for doweling.) Drill dowel holes in diagonally opposite motor feet in the locations provided. -
Page 12: Lubrication
On motors equipped with circulating oil lube system and adjustable needle valve, valve must be adjusted or flooding of oil sump may occur. Disconnect valve and adjust to flow rate, pressure, and temperature as defined on dimension sheet or nameplate. If dimension sheet is not available contact your Baldor District Sales Office. -
Page 13: First Time Start Up
30 minutes. If this rate of rise does not decrease or the temperature exceeds 90°C, stop the motor. 13. Ensure that the protective controls are functioning properly before any prolonged operation. 14. Run the motor for at least two hours. 2-4 Installation & Operation MN409 This Manual:http://www.manuallib.com/baldor/mn409-large-ac-motors-handbook.html... -
Page 14: Coupled Start Up
The motor is also capable of making one start at its rated load operation temperature. For cooling time required before additional starts can be made consult your local Baldor District office or the motor starting nameplate if one is provided. - Page 15 2-6 Installation & Operation MN409 This Manual:http://www.manuallib.com/baldor/mn409-large-ac-motors-handbook.html...
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Page 16: Section 3 Maintenance & Troubleshooting
These checks can also provide an excellent indication of the load from the driven equipment. Comparisons of this data with previous no load and full load power demands will give an indication of the performance of the driven machine. MN409 Maintenance & Troubleshooting 3-1 This Manual:http://www.manuallib.com/baldor/mn409-large-ac-motors-handbook.html... -
Page 17: Bearing Lubrication
Anti−Friction Bearing (Grease Lubricated) G−Series AC motors are designed with the Baldor direct grease system which routes new grease directly into the bearing. The relubrication periods shown in Table 3-2 are offered as a guide for varying service conditions, speeds, bearing types and operating hours. -
Page 18: Sleeve Bearings (Oil Lubricated) Instructions
1200 or less Greater than 1200 0 to120°F (−18 to 50°C) 300 SUS (68 cST) 150 SUS (32 cST) −20 to 50°F (−30 to 10°C) 150 SUS (32 cST) 90 SUS (18 cST) MN409 Maintenance & Troubleshooting 3-3 This Manual:http://www.manuallib.com/baldor/mn409-large-ac-motors-handbook.html... -
Page 19: G50 Sleeve Bearing & Cartridge Removal Instructions
15. Use hoist, jack or a non−metallic sling around the shaft to lift the shaft off the lower half of the bearing liner. Roll the lower half of the bearing liner out of the bearing housing. 3-4 Maintenance & Troubleshooting MN409 This Manual:http://www.manuallib.com/baldor/mn409-large-ac-motors-handbook.html... -
Page 20: G5000, G315, G5810 And G40 Sleeve Bearing & Cartridge Removal
Remove top half of bearing and bearing anti−rotation keying devices from bearing housing. Remove Bearing RTD’s if supplied. 10. Using a rope or sling (Nonmetal) around the shaft, raise it just high enough to be able to spin out the bottom half of the bearing. MN409 Maintenance & Troubleshooting 3-5 This Manual:http://www.manuallib.com/baldor/mn409-large-ac-motors-handbook.html... - Page 21 15. Reassemble parts in reverse order of removal. Make sure dowel pins are engaged in top and bottom halves of housing. Apply a sealing compound (Curil T or Permatex #3) to faces of lower bearing housing. 3-6 Maintenance & Troubleshooting MN409 This Manual:http://www.manuallib.com/baldor/mn409-large-ac-motors-handbook.html...
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Page 22: Sleeve/Anti−Friction Bearing Bracket Removal
Note: Before cleaning the windings check for loose blockings, evidence of damage to insulation, distortion or movement of coils, etc. If any of these conditions exist, contact your local Baldor District office for recommendations. Dry Wiping This method is satisfactory when the surfaces to be cleaned are accessible and when only dry dirt is to be removed. - Page 23 Reconditioning (Re−impregnating) Windings If after cleaning with solvent or water and detergent, the insulation shows signs of dryness, it may be necessary to re−impregnate the windings. Consult your local Baldor District office. Checking Insulation Resistance If the motor has been in storage for an extensive period or has been subjected to adverse moisture conditions, check the insulation resistance of the stator winding with an insulation resistance meter.
- Page 24 Coupling , Coupling key or Rotor Rebalance Unbalance Foundation resonance structure Make adjustments to foundation improperly designed Worn bearing Replace bearing if oversize Coupled equipment Check motor vibration uncoupled, if necessary rebalance equipment MN409 Maintenance & Troubleshooting 3-9 This Manual:http://www.manuallib.com/baldor/mn409-large-ac-motors-handbook.html...
- Page 25 3-10 Maintenance & Troubleshooting MN409 This Manual:http://www.manuallib.com/baldor/mn409-large-ac-motors-handbook.html...
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Page 26: Section 4 Optional Accessories
Will respond thermally to normal load / temperature changes; however will not respond fast enough to provide locked rotor protection. MN409 Optional Accessories 4-1 This Manual:http://www.manuallib.com/baldor/mn409-large-ac-motors-handbook.html... -
Page 27: Winding Thermocouple − Tic
Temperature can be monitored using an ohm meter or a resistance bridge and converting the resistance (after subtracting led resistance) to temperature by using the appropriate conversion tables for the element. 4-2 Optional Accessories MN409 This Manual:http://www.manuallib.com/baldor/mn409-large-ac-motors-handbook.html... -
Page 28: Suggested Bearing And Winding Rtd Setting Guidelines
Suggested bearing and winding RTD setting guidelines Most large frame AC Baldor motors with a 1.15 service factor are designed to operate below a Class B (80°C) temperature rise at rated load and are built with a Class H winding insulation system. Based on this low temperature rise, RTD (Resistance Temperature Detectors) settings for Class B rise should be used as a starting point. -
Page 29: Bearing Thermostat
The thermostat consists of a set of normally closed or normally open contacts operated by a diaphragm which is connected to a gas bulb through a capillary tube. Bearing Thermometer Purpose To measure directly the temperature of the oil in the bearing sump or of the bearing outer race. 4-4 Optional Accessories MN409 This Manual:http://www.manuallib.com/baldor/mn409-large-ac-motors-handbook.html... -
Page 30: Space Heaters
To provide a source of cool, clean oil to the bearings. If a system is equipped with a variable needle valve to control flow rate, this valve MUST be adjusted. Disconnect valve and adjust to flow rate shown on dimension sheet (available from your Baldor Sales Office. -
Page 31: Constant Level Oiler
Standard capacitance value for surge capacitors is 1.0 mfd − 460,575 volts, .50 mfd − 2300−7000 volts. They are suitable for 25, 40, 50, or 60 Hz systems. Arrestors are selected according to the maximum RMS line to ground voltage. 4-6 Optional Accessories MN409 This Manual:http://www.manuallib.com/baldor/mn409-large-ac-motors-handbook.html... -
Page 32: Api Documentation
Appendix API Documentation Outline Drawing MN409 API Documentation A−1 This Manual:http://www.manuallib.com/baldor/mn409-large-ac-motors-handbook.html... -
Page 33: Anti−Friction Bearing
15. Inboard Snap Ring (Not required for all designs) 16. Front End Bearing 17. Outboard Snap Ring (Not required for all designs) 18. Front End Bracket 19. Front End Bearing Seal (Not Required For All Designs) 20. Fan 21. Fan Cover A−2 API Documentation MN409 This Manual:http://www.manuallib.com/baldor/mn409-large-ac-motors-handbook.html... -
Page 34: Sleeve Bearing
17. Front End Inboard Seal 18. Front End Bearing Housing 19. Bearing And Oil Ring 20. Front End Outboard Seal (G50 only) 21. Front End Bearing Air Seal (G50 only) 22. Fan 23. Fan Cover MN409 API Documentation A−3 This Manual:http://www.manuallib.com/baldor/mn409-large-ac-motors-handbook.html... - Page 35 A−4 API Documentation MN409 This Manual:http://www.manuallib.com/baldor/mn409-large-ac-motors-handbook.html...
- Page 36 Baldor District Offices This Manual:http://www.manuallib.com/baldor/mn409-large-ac-motors-handbook.html...
- Page 37 BALDOR ELECTRIC COMPANY World Headquarters P.O. Box 2400 Fort Smith, AR 72901−2400 (479) 646−4711 Fax (479) 648−5792 www.baldor.com © 2008 Baldor Electric Company Printed in USA MN409 6/08 This Manual:http://www.manuallib.com/baldor/mn409-large-ac-motors-handbook.html...