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GE Pegasus MHV EP-427-I Instuctions

Horizontal induction motor.
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Instructions
GEEP- 427-I
®
Pegasus MHV
Horizontal
Induction Motor
Totally Enclosed Water-to-Air Cooled
Sleeve Bearing
These Instructions do not purport to cover all details or variations in equipment nor to provide for every possible contingency to be met in connection with
installation, operation or maintenance. Should further information be desired or should particular problems arise which are not covered sufficiently for the
purchaser's purposes, the matter should be referred to GE Energy Motors.
®
Pegasus MHV
is a registered trademark of General Electric Company.
GE Energy Motors GEEP-427-I
Copyright 2009 The General Electric Company, USA
1

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   Summary of Contents for GE Pegasus MHV GEEP-427-I

  • Page 1

    These Instructions do not purport to cover all details or variations in equipment nor to provide for every possible contingency to be met in connection with installation, operation or maintenance. Should further information be desired or should particular problems arise which are not covered sufficiently for the purchaser’s purposes, the matter should be referred to GE Energy Motors. ®...

  • Page 2: Table Of Contents

    Maintenance - Opposite Drive-End Bearing Operational Difficulties Spare Parts Belt and Chain Drives Machine Description Machine Assembly Maintenance - Top Cover and Heat Exchanger Air-to-Water Heat Exchanger Parts Identification GE Energy Motors GEEP-427-I Copyright 2009, The General Electric Company, USA...

  • Page 3: Introduction

    CODE, AND SOUND LOCAL PRACTICES IS • use proper care and procedures in handling, lifting, RECOMMENDED. installing, operating, and maintaining the equipment. • before operating, replace any covers that have been removed for inspection. GE Energy Motors GEEP-427-I Copyright 2009, The General Electric Company, USA...

  • Page 4

    If a question or circumstance not covered by the instruction manual occurs, or should a problem occur, contact the nearest General Electric Technical Service representative. GE Energy Motors GEEP-427-I Copyright 2009, The General Electric Company, USA...

  • Page 5

    FAILURE TO OBSERVE THESE PRECAUTIONS not make an angle smaller than 60° with the horizontal to RESULT DAMAGE prevent over stress on the slings and the studs. EQUIPMENT, INJURY TO PERSONNEL, OR BOTH. GE Energy Motors GEEP-427-I Copyright 2009, The General Electric Company, USA...

  • Page 6

    Machines equipped with brushes should have the brushes lifted in the brush holders so they are not in contact with the collectors. GE Energy Motors GEEP-427-I Copyright 2009, The General Electric Company, USA...

  • Page 7

    4. Integrity of protective coatings. Experience has shown that adequate precautions during storage will avoid costly deterioration of parts and 5. Condition of paint - discoloration. lengthy maintenance procedures at installation and start- GE Energy Motors GEEP-427-I Copyright 2009, The General Electric Company, USA...

  • Page 8

    PROOF FEATURES. The machine has two full-length mounting feet, IF IGNITABLE DUST OR LINT IS PRESENT, one on each side, consisting of machined steel bars THE SURFACE TEMPERATURE OF SPACE GE Energy Motors GEEP-427-I Copyright 2009, The General Electric Company, USA...

  • Page 9

    When this preliminary alignment is on the foundation and be located in a level plane. complete, install the holdown bolts but do not tight them until final alignment has been made. GE Energy Motors GEEP-427-I Copyright 2009, The General Electric Company, USA...

  • Page 10: Alignment And Coupling

    Shaft ends together 5/16 7/16 3/16 Shaft ends apart 7/16 5/16 Table 1 Recommended clearances Fig. 1. Shaft arrangement for limited end-float coupling Parallel and Angular Alignment for Flexible Couplings GE Energy Motors GEEP-427-I Copyright 2009, The General Electric Company, USA...

  • Page 11

    See Fig. 3. Mark the locations of the indicating button with a visible mark. Fig. 2. Arrangement of indicator for parallel alignment Fig. 3. Arrangement of indicators for angular alignment GE Energy Motors GEEP-427-I Copyright 2009, The General Electric Company, USA 11...

  • Page 12

    Use the may require several iterations. difference in readings between the two indicators to determine the angular misalignment between the two GE Energy Motors GEEP-427-I Copyright 2009, The General Electric Company, USA...

  • Page 13: Wiring And Grounding

    This gasketed cover should be kept closed to prevent the entrance of moisture, dust and conducting particles. The gasketed cover should be kept closed to GE Energy Motors GEEP-427-I Copyright 2009, The General Electric Company, USA 13...

  • Page 14

    These grounding pads are also drilled and tapped as described above. The machine should be grounded in accordance with the National Electric and consistent with sound local practices. GE Energy Motors GEEP-427-I Copyright 2009, The General Electric Company, USA...

  • Page 15

    6 to 10 times the percent unbalance of the voltage. Percent Voltage Unbalance is defined as follows: Percent Maximum Voltage Derivation Average Voltage GE Energy Motors GEEP-427-I Copyright 2009, The General Electric Company, USA 15...

  • Page 16

    4. Length of time of applying the dc test voltage MAY RESULT IN INJURY TO PERSONNEL. 5. Magnitude of the applied dc test voltage Fig. 1. Temperature correction factor curve GE Energy Motors GEEP-427-I Copyright 2009, The General Electric Company, USA...

  • Page 17

    5. The lubricant used should agree with the nameplate and this instruction book. GE Energy Motors GEEP-427-I Copyright 2009, The General Electric Company, USA 17...

  • Page 18

    Initially temperatures will rise rapidly and then should level off. NOTE: Bearing temperatures should not exceed 95C for a sleeve bearing. GE Energy Motors GEEP-427-I Copyright 2009, The General Electric Company, USA...

  • Page 19

    Other possible causes are “soft” shim packs under 0.072 one or more feet, loose foot bolts or an inadequate 0.064 foundation. Contributions to vibration from the driven equipment should not be overlooked. GE Energy Motors GEEP-427-I Copyright 2009, The General Electric Company, USA 19...

  • Page 20: Oil Level

    With the bulls eye type gauge, the centerline of the gauge indicates maximum oil level and the bottom of the gauge indicates minimum oil level GE Energy Motors GEEP-427-I Copyright 2009, The General Electric Company, USA...

  • Page 21: Maintenance - General

    Dirt particles in the lubricating oil or grease supply will cause more rapid bearing wear and even bearing failure. Acid and alkali vapors can, over a period GE Energy Motors GEEP-427-I Copyright 2009, The General Electric Company, USA 21...

  • Page 22

    (for machines supplied with this program for these two cases. There will be may equipment), bearings and top covers should be done on a installations falling between then, as well as installations GE Energy Motors GEEP-427-I Copyright 2009, The General Electric Company, USA...

  • Page 23

    They should show no evidence of movement or frequent schedule, more of the winding is accessible. migration. The ends of the wedge should be free of fraying. Again as indicated above for coil insulation, GE Energy Motors GEEP-427-I Copyright 2009, The General Electric Company, USA 23...

  • Page 24

    General Electric Service Shop be contacted. circulating current. The winding should be thoroughly GE Energy Motors GEEP-427-I Copyright 2009, The General Electric Company, USA...

  • Page 25: Maintenance - Lube Oil Recommendation

    Oxidation Stability Tests, Hrs (*) 2000 2000 1500 D943 The life of an oil oxidation test shall be the number of hours required to reach a neutralization value of 2.0 mgKOH/g. GE Energy Motors GEEP-427-I Copyright 2009, The General Electric Company, USA 25...

  • Page 26

    TABLE 5 - APPROXIMATE OIL QUANTITY FOR HORIZONTAL MOTORS Frame Liter per Motor 8200 8300 8400/8500 12.6 8600 20.0 8700/8800/8900 48.8 - Fill to level indicated on the sight glass. - For Vertical Motors, see outline drawing. GE Energy Motors GEEP-427-I Copyright 2009, The General Electric Company, USA...

  • Page 27: Maintenance - Drive-end Bearing

    4. Upper bearing cap 5. Upper half bearing 6. Bearing bolt 7. Shaft 8. Lower-half end shield 9. Lower half bearing 10. Oil ring Fig. 1. Drive-End Bearing GE Energy Motors GEEP-427-I Copyright 2009, The General Electric Company, USA 27...

  • Page 28

    8. Use a thin coating of gasket seal, Tight Seal or equivalent, on horizontal joints of the upper bearing cap to prevent oil leakage. GE Energy Motors GEEP-427-I Copyright 2009, The General Electric Company, USA...

  • Page 29: Maintenance - Opposite Drive-end Bearing

    6. Cover 7. Anti rotation pin 8. Shaft 9. Lower half bearing 10. Lower-half end shield 11. 2 Oil rings 12. Bearing Insulation Fig. 1 Opposite Drive-End Bearing GE Energy Motors GEEP-427-I Copyright 2009, The General Electric Company, USA 29...

  • Page 30

    7. To replace bearing, reverse disassembly procedures. Use a thin coating of gasket seal, Tight Seal or equivalent, on joints of upper bearing cap and cover to prevent oil leakage. GE Energy Motors GEEP-427-I Copyright 2009, The General Electric Company, USA...

  • Page 31: Operational Difficulties

    “Open” in one of the lines or circuits. Supply bus unbalanced Check balance by measuring current and voltage in each phase. Correct the power supply to obtain balanced voltages. TROUBLE - SHOOTING CHART GE Energy Motors GEEP-427-I Copyright 2009, The General Electric Company, USA 31...

  • Page 32

    Inspect winding for damage. Obtain (line-to-ground) expert help for repair. Incorrect speed Check speed, compare with nameplate. Bearings overheating Alignment Check parallel, angular and axial (journal type) alignment. Correct as required. GE Energy Motors GEEP-427-I Copyright 2009, The General Electric Company, USA...

  • Page 33

    Low insulation resistance Moisture Dry winding or insulation failure. Dirt Clean winding Conducting particles have Obtain expert help for repair. penetrated insulation. TROUBLE - SHOOTING CHART GE Energy Motors GEEP-427-I Copyright 2009, The General Electric Company, USA 33...

  • Page 34

    7/16 - 14 1/2 - 13 5/8 - 11 3/4 - 10 7/8 - 9 1 - 8 1 1/4 - 7 1120 1 1/2 - 6 1940 1311 GE Energy Motors GEEP-427-I Copyright 2009, The General Electric Company, USA...

  • Page 35: Spare Parts

    First thee Items in (1) (as applicable) deteriorate. This may cause throttling of cooling air and Prewound Stator Core Synchronous Rotor Wound Poles GE Energy Motors GEEP-427-I Copyright 2009, The General Electric Company, USA 35...

  • Page 36: Ordering Parts

    General Electric Company contact, include the Stator serial number and model number of the machine as well as the rating and the part number reference from the Parts Identification section. GE Energy Motors GEEP-427-I Copyright 2009, The General Electric Company, USA...

  • Page 37: Belt And Chain Drives

    The lubrication and maintenance of the possible. chain should be in accordance with the chain manufacturer’s instructions. GE Energy Motors GEEP-427-I Copyright 2009, The General Electric Company, USA 37...

  • Page 38: Machine Description

    The cooled air then separates, makes a 180 degree turn and flows down into both machine ends to reenter the machine and repeat the circulation path. GE Energy Motors GEEP-427-I Copyright 2009, The General Electric Company, USA...

  • Page 39

    Finally, the heated air is discharged around the periphery of the stator core, and then through the side frame openings. Fig. 1 Dripproof Machine Assembly GE Energy Motors GEEP-427-I Copyright 2009, The General Electric Company, USA 39...

  • Page 40

    Bracing is then added to the coil extensions, beyond the ends of the stator core. The entire prewound stator core is vacuum-pressure impregnated with epoxy resin and then cured by baking. Fig. 2 Prewound stator core GE Energy Motors GEEP-427-I Copyright 2009, The General Electric Company, USA...

  • Page 41: Maintenance - Top Cover And Heat Exchanger

    Based upon conditions observed inside the recommended that rebuilding be done by the original tubes at the second inspection, the frequency of inspection may be adjusted accordingly. GE Energy Motors GEEP-427-I Copyright 2009, The General Electric Company, USA 41...

  • Page 42

    GEEP-427-I Pegasus, Horizontal Induction Motor TEWAC, Sleeve Bearing manufacturer or by a qualified shop. The heat exchanger nameplate lists the name of the manufacturer. GE Energy Motors GEEP-427-I Copyright 2009, The General Electric Company, USA...

  • Page 43

    GE Energy Motors GEEP-427-I Copyright 2009, The General Electric Company, USA 43...

  • Page 44: Parts Identification

    7. Upper Half End Shield 16. Oil Sight Glass 25. Top Cover Assembly 8. Upper Bearing Cap 17. Cover 26. Dowel Pin 9. Bearing 18. Bearing Fig. 1 General view GE Energy Motors GEEP-427-I Copyright 2009, The General Electric Company, USA...

  • Page 45

    Fig. 1 is presented in page 1. Each part is or renewal parts, include this publication and part marked by a reference number for identification. number in addition to the model and serial number of the machine. GE Energy Motors GEEP-427-I Copyright 2009, The General Electric Company, USA 45...

  • Page 46

    GE Energy Motors...

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