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Optional Accessories 4-5

MN409

Space Heaters

WARNING:

Space Heaters operate at line voltage. Disconnect power to space heaters before performing

maintenance work on motor. Failure to observe this precaution could result in severe bodily

injury or loss of life.

Purpose

Space heaters are used to prevent condensation of moisture within the motor enclosure during shutdown

or storage periods.

Mounting

Space heaters are selected, unless otherwise order, using the following parameters.

1.

Sheath temperature 350

°

F (200

°

C) nominal maximum as standard. Lower Sheath temperatures are

available.

2.

Temperature rise inside of motor raised approximately 10

°

F (6

°

C) above ambient.

3.

Assume ambient maximum of 40

°

C

From the above, space heaters are sized, mounted and terminated at an accessory conduit box. 

Leads are tagged.
Approximate Space Heater Wattage for G5000/G315 is 320W, G5810/G40 is 400W, SG50 is 625W and

MG50 is 750W.

Oil Circulation System

Purpose

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.

Description

The oil lubrication system consists of provisions for introducing oil to the bearing and drains which will

permit removal of excess oil in the sump without flooding or without letting the sump level become too

low for the oil rings to pick up oil in the event the source of oil is lost.
Oil inlet and outlets are provided with each bearing to introduce oil into the journal area. An orifice is

provided in the oil inlet pipe line to control the amount of oil introduced into the bearing. The oil outlet will

provide adequate drain without total loss of oil in the sump.
The bearing is also equipped with oil rings.

Requirement

The need for a lubrication system may exist on some ratings due to journal size and speed of the shaft.

In those cases the unit would be supplied with inlet and outlet provisions as standard for connection to a

customer provided source or oil.
The details or ratings that require a flood lubrication system are shown on the dimension sheet.

This Manual:http://www.manuallib.com/baldor/mn409-large-ac-motors-handbook.html

Содержание Global TEFC Series

Страница 1: ...o 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...

Страница 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...

Страница 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...

Страница 4: ...Lubricated Instructions 3 3 G50 Sleeve Bearing Cartridge Removal Instructions 3 4 G5000 G315 G5810 and G40 Sleeve Bearing Cartridge Removal 3 5 Sleeve Anti Friction Bearing Bracket Removal 3 7 Anti F...

Страница 5: ...al Information ii Table of Contents MN409 Appendix API Documentation A 1 Outline Drawing A 1 Anti Friction Bearing A 2 Sleeve Bearing A 3 This Manual http www manuallib com baldor mn409 large ac motor...

Страница 6: ...design of the motor but also in the state of the art manufacturing used to produce and test these rugged and dependable machines It extends from the major assemblies such as rotors stators enclosures...

Страница 7: ...ning operations Improper methods may cause muscle strain or other harm WARNING Before performing any motor maintenance procedure be sure that the equipment connected to the motor shaft cannot cause sh...

Страница 8: ...ion should not exceed a 20 angle from the shank of the eye bolt or lifting lug Excessive lifting angles can cause damage Caution To prevent equipment damage be sure that the electrical service is not...

Страница 9: ...This distributes the grease preventing bearing corrosion due to condensation or to the presence of contaminating gases near the motor After rotating the shaft replace protective packing and shaft ship...

Страница 10: ...have natural ventilation some external source of forced and filtered air will be necessary The room should be such that the heat developed during operation can escape and will not be recirculated ove...

Страница 11: ...2 Drill corresponding holes in the foundation 3 Ream all holes 4 Install proper fitting dowels 5 Mounting bolts must be carefully tightened to prevent changes in alignment Use a flat washer and lock w...

Страница 12: ...re applying power Do not apply AC power before you ensure that all grounding instructions have been followed Electrical shock can cause serious or fatal injury National Electrical Code and Local codes...

Страница 13: ...em operating before starting the motor 6 Manually rotate the motor shaft to ensure that it rotates freely 7 When the driven machine is likely to be damaged by the wrong direction of rotation it is bes...

Страница 14: ...s excessive vibration shut down immediately and investigate Check for coupling and key unbalance lack of lubrication foot planarity and structural resonance RPM Max Vibration Amplitude Peak to Peak on...

Страница 15: ...2 6 Installation Operation MN409 This Manual http www manuallib com baldor mn409 large ac motors handbook html...

Страница 16: ...g and ultimately failure Only a slight unbalance of voltage applied to a poly phase motor will cause large unbalance currents and result in overheating 3 Check power supply total harmonic distortion t...

Страница 17: ...eases greases with EP additives or greases other than those specifically listed on the motor lubrication nameplate and this instruction manual Failure to follow these instructions may result in lubric...

Страница 18: ...housing 3 Add the recommended volume of the recommended lubricant per the motor Lubrication Nameplate or Table 3 3 using a hand operated grease gun 4 Start the motor and run with the relief plug open...

Страница 19: ...e 5 Remove drain plug at bottom of bearing housing and drain oil from the reservoir 6 Loosen and remove the bolts at the split line of the bearing housing 7 If the motor has insulated bearings and mee...

Страница 20: ...ove all wax from bearing surfaces using solvent Dry bearing before assembling in housing The bearings are spherical self seating Apply a coat of oil to the outside diameter of the bearing liner and al...

Страница 21: ...rench slowly rotate the shaft 2 turns in each direction 9 Remove bearing as listed in section G5000 G315 G581 0 and G40 Sleeve Bearing and Cartridge Removal Inspect bore of both bearing halves for bur...

Страница 22: ...e outboard side cavity of the bearing 100 Grease inner caps and bracket bearing housing to 60 full 8 Assemble end shield in reverse order See Sleeve Anti Friction Bearing Bracket Removal Rotor And Sta...

Страница 23: ...that the dirt will be blown into inner crevices Oil grease tar and wax can be removed by adding a Nonconductive Detergent to the wash water After washing it is necessary to dry the windings in an oven...

Страница 24: ...heck for proper lubrication oil level leaks Check alignment and coupling float Drain and refill change filters in flood lube system Inspect for source of contamination Check bearing bore and shaft O D...

Страница 25: ...3 10 Maintenance Troubleshooting MN409 This Manual http www manuallib com baldor mn409 large ac motors handbook html...

Страница 26: ...sistance bridge and converting the resistance to temperature 4 Will respond thermally to normal load and temperature changes but not fast enough to provide locked rotor protection Winding Thermostat P...

Страница 27: ...ect Thermistor leads are brought to a terminal strip located on the coil head Separate leads continue to controller located in the accessory conduit box where customer connections are made Remarks Can...

Страница 28: ...ed on the installation of the winding RTDs imbedded in the winding as specified by NEMA Bearing RTDs should be installed so they are in contact with the outer race on ball or roller bearings or in dir...

Страница 29: ...earing Thermostat Also called Bearing Temperature Relay or Gas Bulb Switch Purpose To indicate the bearing temperature has exceeded normal operating temperatures Principle of Operation The device oper...

Страница 30: ...ble 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 Description The oil lubricat...

Страница 31: ...the bearing without the need to get close to the housing or shaft Current Transformers Description Current transformers are a means of measuring or sensing current flow through the input leads of AC...

Страница 32: ...Appendix API Documentation API Documentation A 1 MN409 Outline Drawing This Manual http www manuallib com baldor mn409 large ac motors handbook html...

Страница 33: ...r 9 Stator Frame Assembly 10 Lifting Provisions 11 Conduit Box Assembly 12 Rotor Shaft Assembly 13 Front End Thermal Barrier Not required for all designs 14 Front End Inner Cap 15 Inboard Snap Ring No...

Страница 34: ...9 Sleeve Bearing Bracket 10 Stator Frame Assembly 11 Lifting Provisions 12 Conduit Box Assembly 13 Rotor Shaft Assembly 14 Sleeve Bearing Bracket 15 Float Adjusting Shim G50 only 16 Bracket Cover 17 F...

Страница 35: ...A 4 API Documentation MN409 This Manual http www manuallib com baldor mn409 large ac motors handbook html...

Страница 36: ...Baldor District Offices This Manual http www manuallib com baldor mn409 large ac motors handbook html...

Страница 37: ...MN409 Printed in USA 6 08 BALDOR ELECTRIC COMPANY World Headquarters P O Box 2400 Fort Smith AR 72901 2400 479 646 4711 Fax 479 648 5792 www baldor com This Manual http www manuallib com baldor mn409...

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