GE NEMA 140 User Manual Download

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GE Energy

NEMA 140 to 500 Frame

Horizontal AC Small Industrial Motors

Motor Installation

And Maintenance Instructions

GEI – 56128H

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Summary of Contents for NEMA 140

Page 1: ...GE Energy NEMA 140 to 500 Frame Horizontal AC Small Industrial Motors Motor Installation And Maintenance Instructions GEI 56128H ...

Page 2: ...Mounting 6 C Sleeve Bearing Endplay 8 D Power Supply and Connections 8 IV Operation 9 A Steps Prior to Starting 9 B Initial Start 9 C Jogging and Repeated Starts 10 V Maintenance 10 A General 10 B General Cleanliness 10 C Division 1 Explosion Proof Motors 10 D Insulation and Windings 10 E Vacuum and Compressed Air Cleaning 10 F Cleaning with Water and Detergent 11 G Anti Friction Bearings and Lubr...

Page 3: ... for lifting motors they must be securely tightened and the direction of the lift must not exceed a 15 angle from the shank of the eyebolt Do not use eyebolts in an ambient below 0 F At temperatures below 0 F the eyebolt could fail resulting in injury to personnel and or damage to equipment Drop forged eyebolts per American Society of Testing Materials A489 or equivalent must be used Do not use th...

Page 4: ... can be hot and should not be touched without taking proper precautions This symbol instructs one to read the manufacturer s instruction manual before installation operation and maintenance This symbol identifies a terminal which is intended for connection to an external grounding conductor for protection against electric shock in case of a fault The use of a small case i enclosed in a square indi...

Page 5: ...e motor has been exposed to low temperatures unpack it only after it has reached the temperature of the room in which it will be unpacked Otherwise the motor windings will be exposed to condensing moisture B Temporary Storage Up to 6 Months If the motor will not be put into service immediately certain precautions should be taken to protect the motor while in storage It is recommended the motor be ...

Page 6: ...nably free of dirt and moisture 2 General Purpose enclosed motors can be used where they are exposed to dirt moisture and most outdoor conditions 3 Severe duty enclosed motors can be used in highly corrosive or excessively moist areas 4 Zone 2 Hazardous Locations All motors marked with an IECEx or ATEX designation are suitable for Zone 2 locations Before the motor is install in the hazardous locat...

Page 7: ...e drain plugs from the frame or end shields of enclosed motors used outdoors or in other high moisture areas 2 On motors with dual mounting holes use the holes indicated per Figure 2A and 2B Figure 2A Mounting Figure 2B Mounting ...

Page 8: ...enter distances less than the diameter of the large sheave should be referred to the Company Make certain that the minimum allowed diameter of the motor pulley and the maximum belt tension are not exceed because an excessive pull may cause bearing trouble and shaft failures Tighten belts only enough to prevent slippage Belt speeds should not exceed 5000 feet per minute 25 meters per second When V ...

Page 9: ...the oil level sight gauges The oil level should be checked only when the machine is not running Do not flush out anti friction bearings The bearing grease supplied is sufficient for initial operation 2 Whenever possible examine the interior of the motor for loose objects or debris which may have accumulated and remove any foreign material 3 If possible turn the rotor by hand to be sure that it rot...

Page 10: ... up to check periodically the following items 1 General cleanliness 2 Insulation and windings 3 Lubrication and bearings B General Cleanliness The interior and exterior of the motor should be kept free from dirt oil and grease and conducting dust Paper textile or dusts may build up and block off ventilation Any of these contaminants can lead to early motor failure C Division 1 Explosion Proof Moto...

Page 11: ...s Exxon Mobil Polyrex EM General Electric Specification D6A2C23 polyurea grease should be used for lubrication unless special grease is specified on the motor s nameplate See Section XI Lubrication Guide for greasing frequency and recommended quantity of grease If in doubt refer to GE Energy CAUTION Failure to use polyurea base NLGI Grade 2 or known compatible grease could result in premature bear...

Page 12: ...eplacement Extreme care is required in the disassembly of a bearing to prevent nicking or burring of the bearing or machined surfaces In addition the surfaces of the journal and the bearing must be protected from damage when exposed during the process of disassembly Remove all bearing sensors prior to disassembly of the bearing a The drive end and opposite drive end sleeve bearing may be replaced ...

Page 13: ...rument Excessive Current Unbalanced AC current Improper or restricted ventilation Excessive ambient temperature Short circuited coil or windings Dirty windings Unbalanced voltage Bearings Overheating Calibration of measuring instrument Worn out or dirty oil Rough journal Oil rings jammed Insufficient Oil Misalignment Excessive end thrust or radial loading Shaft currents Excessive or insufficient g...

Page 14: ...ng of BS EN 60079 1 and BS EN 60079 15 standards The motor has been designed to meet the rigid requirements of these standards Repair or alteration of the motor may result in the motor no longer meeting the requirements of these standards If major repairs are undertaken such as rewinding a stator proper facilities should be made available and suitable precautions observed Recommended tightening to...

Page 15: ... 8 1 4 in Grade 8 Fan Cover Mounting 100 145 11 16 5 16 in Bearing Cap 78 120 8 8 14 5 16 in All Parts except Bearing Cap 170 250 19 28 3 8 Low Carbon Steel Conduit Box Cover 180 240 20 27 3 8 in All Parts except Conduit Box Cover 250 370 28 42 1 2 in All Parts 610 920 70 100 3 4 in All Parts 2150 3200 240 360 Table 4B Tightening Torque Range Stainless Steel SAE Hardware Property Class 50 Screw Bo...

Page 16: ...GEI 56128H 16 Typical 210 to 440 Frame Dripproof Construction ...

Page 17: ...GEI 56128H 17 Typical 140 to 440 Frame TEFC Construction ...

Page 18: ...GEI 56128H 18 Typical 500 Frame TEFC Construction Ball Bearing Typical 500 Frame TEFC Construction Sleeve Bearing ...

Page 19: ...6 months 3 months 1 5 6 months 3 months 1 5 months Very Severe Dirty vibrating applications where end of shaft is hot pumps and fans high ambient temperature 1 7 5 10 40 50 150 200 350 400 1000 9 months 4 months 4 months 3 months 2 months 6 months 3 months 2 months 1 month Table 6 Number of Grease Gun Pumps Number of Pumps Number of Pumps Bearing Size on 16 Oz Gun 24 Oz Gun Bearing Size on 16 Oz G...

Page 20: ...n History Rev Date Author ISAAC Description 0 09 01 99 G Garver N A Conversion from PageMaker 1 02 19 03 S Long 02 3231 Revised to remove references to vertical oil lubed motors 2 06 22 10 M Bruin 10 0443 Added Quantum 315 and IECEx ...

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