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Instructions - Torrent Engineering & Equipment

GEK-95351.. GE Industrial Systems Instructions Vertical Induction Motors High Thrust Hollow & Solid-Shaft and In-Line Solid-Shaft Frames 182-405 NEMA Type P Base TEFC & Explosion-Proof GEK-95351. Safety Precautions High voltage and rotating Be sure that the shaft key is fully captive parts can cause serious or fatal before the motor is energized. injuries. Installation, opera- tion, and maintenance of elec- Avoid extended exposure in close proximity tric machinery should be per- to machinery with high noise levels. formed by qualified personnel. Familiarization with NEMA Publication MG-2, Use proper care and procedures in handling, Safety Standard for Construction and Guide for lifting, installing, operating, and maintaining Selection, Installation and Use of Electric Mo- the Equipment .

GEK-95351 GE Industrial Systems Instructions Vertical Induction Motors High Thrust Hollow & Solid-Shaft and In-Line Solid-Shaft Frames 182-405 NEMA Type P Base

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1 GEK-95351.. GE Industrial Systems Instructions Vertical Induction Motors High Thrust Hollow & Solid-Shaft and In-Line Solid-Shaft Frames 182-405 NEMA Type P Base TEFC & Explosion-Proof GEK-95351. Safety Precautions High voltage and rotating Be sure that the shaft key is fully captive parts can cause serious or fatal before the motor is energized. injuries. Installation, opera- tion, and maintenance of elec- Avoid extended exposure in close proximity tric machinery should be per- to machinery with high noise levels. formed by qualified personnel. Familiarization with NEMA Publication MG-2, Use proper care and procedures in handling, Safety Standard for Construction and Guide for lifting, installing, operating, and maintaining Selection, Installation and Use of Electric Mo- the Equipment .

2 Tors and Generators, the National Electrical Code, and sound local practices is recom- Do not lift anything but the motor with the mended. motor lifting means. For Equipment covered in this instruction book, Safe maintenance practices by qualified person- it is important to observe safety precautions to nel are imperative. Before starting maintenance protect personnel from possible injury. Among procedures, be positive that: the many considerations, personnel should be instructed to: Equipment connected to the shaft will not cause mechanical rotation. Avoid contact with energized circuits or rotating parts.

3 Main machine windings and all accessory devices associated with the work area are Avoid by-passing or rendering inoperative disconnected from electrical power sources. any safeguards or protective devices. If a high-potential insulation test is required, Avoid use of automatic-reset thermal pro- procedure and precautions outlined in NEMA. tection where unexpected starting of equip- Standards MG-1 and MG-2 should be followed. ment might be hazardous to personnel. Failure to properly ground the frame of this ma- Avoid contact with capacitors until safe dis- chine can cause serious injury to personnel.

4 Charge procedures have been followed. Grounding should be in accordance with the National Electrical Code and consistent with sound local practice. These Instructions do not purport to cover all of the 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 the General Electric Company. Copyright 1989, 1999 General Electric Company 2.

5 GEK-95351. Table of Contents Subject Page Safety Introduction ..4. Receiving, Handling, and Unpacking ..5. Installation ..5. Location and Mounting ..6. Pump and System Precautions ..6. Alignment of Solid Shaft Motors ..6. Couplings for Hollow-Shaft Self Release Bolted Couplings ..9. Non-Reverse Couplings .. 10. Power Supply and Connections .. 12. Wiring and 12. Allowable Voltage Frequency .. 12. Position of the Conduit 12. 12. Operation .. 13. Steps Prior to Initial Startup .. 13. Initial Startup .. 15. Jogging and Repeat Starts .. 15. Maintenance .. 15. 16. Explosion-Proof Motors for Hazardous 16.

6 General 17. Relubrication .. 17. Oil Lubricated Bearings .. 17. Grease Lubricated Bearings .. 19. End-Play Adjustment .. 20. General .. 20. Lower Thrust Bearings 182-286 Frames .. 20. Upper Ball Thrust Bearings 320-405 Frames, Oil Lubricated .. 21. Bearing 21. Insulation and Winding 22. 22. Vacuum and Compressed Air Cleaning .. 22. Cleaning with Water and 23. Cleaning with 23. Re-Varnishing Windings .. 23. Renewal Parts .. 24. Trouble Shooting 25. 3. GEK-95351. VERTICAL INDUCTION MOTORS. HIGH THRUST HOLLOW & SOLID-SHAFT AND IN-LINE SOLID SHAFT. FRAMES 182-405 NEMA P BASE. TEFC & EXPLOSION-PROOF.

7 I. INTRODUCTION on pumps which are directly in the pipe-line, and hence called IN-LINE motors) are also General Electric High-Thrust vertical mo- covered by this instruction book. These tors covered by these Instructions are care- motors have two opposed-mounted angu- fully constructed of high-quality materials lar-contact ball thrust bearings so they can and are designed to give long and trouble- carry either up or down thrust. The guide free service when properly installed and bearing is a radial-ball type. IN-LINE mo- maintained. These motors are generally tors are always of the solid-shaft type.

8 This used to drive pumps. clamped construction is shown on Figures 3a and 4a. Both HOLLOW-SHAFT and SOLID- SHAFT motors are described in this in- Since overloading greatly reduces bearing struction book. Hollow-shaft construction is life, the amount of thrust applied should not available in frame sizes 213 and larger exceed the recommended values. whereas solid-shaft construction is available in 182 and larger. Figure 1 shows a typical This instruction book applies to motors with 213-286 frame hollow-shaft high thrust either Totally Enclosed Fan Cooled or To- motor and Figure 2 shows the 324-405 tally Enclosed Fan Cooled-Explosion-Proof frame construction.

9 Solid-shaft construction enclosures as defined by NEMA. is shown in Figures 3 and 4 with the motor shaft extending out the bottom of the mo- Enclosed motors are characterized by an tor. Solid-shaft high-thrust motors are not enclosure and ventilating system that pre- suitable for driving loads that impose sig- vents the free exchange of air between the nificant radial load on the motor shaft; they inside and outside of the motor . The air in- should not, for example, be used for belt- side the motor is circulated by the rotor fans drive applications. to carry heat to the enclosing parts, while an external fan blows ambient air over the Motors may be supplied with different motor to complete the cooling process.

10 Bearing arrangements for various external thrust conditions imposed by the pump, II. RECEIVING, HANDLING, AND. such as different magnitudes of down-thrust STORAGE. and either momentary or continuous up- thrust. A typical high-thrust motor with an- Each motor should be carefully examined gular-contact ball bearings is shown in Fig- when received and a claim filed with the ures 1 and 2. This standard construction is carrier for any damage. The nearest office for high continuous down-thrust and is suit- of the General Electric Company may offer able for momentary up-thrust equal to 30% guidance.


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