GE gei-m1031 Installation and Maintenance Manual
Contents
1. endplay Table 5 Bearing Cap Bolt Torque Table 6 End Shield Bolt Torque Sos Minimum Maximum Minimum Maximum Frame Torque Torque Frame Bolt Torque Torque Size Bolt Size Ft Lb N M Ft Lb N M a ske _ 143 286 Not Not Not e Applicable Applicable Applicable 182 184 M10 14 19 18 7 25 324 326 M8 14 19 18 7 25 213 215 M10 5 7 7 74 7 6 10 3 254 286 M12 49 3 66 8 65 8 89 2 324 326 M12 49 3 66 8 65 8 89 2 17 V Vi MAINTENANCE cont d D Anti Friction Bearing Maintenance cont d 2 Reassembly cont d GEI M1031 B Table 7 Motor Endplay Ranges Shaft Endplay Inches Frame Size Minimum Maximum 140 180 0 020 0 045 210 250 0 031 0 057 280 0 039 0 065 320 None Locked Bearings OPERATIONAL DIFFICULTIES Some operating difficulties may occur and their causes are given in the following chart and should be corrected as soon as possible TROUBLE SHOOTING CHART Affected Parts Windings Difficulty Overheating What to Check Calibration of measuring instrument Excessive current Unbalanced AC current mproper or restricted ventilation Excessive ambient temperature Short circuited coil or windings Dirty windings Unbalanced voltage Bearings Overheating Calibration of measuring instrument Rough journal Misalignment Excessive end thrust or radial loading2. Warning 2 Vacuum and Compressed Air Cleanin Compressed air should be used to remove loose dirt and dust from air passages such as air ducts Suction should be used to remove dirt and dust particles from windings to avoid driving particles into the windings and damaging the coils Care must be taken to make sure that A Operator must not use compressed air ay the air supply is dry and that excessive 2 to remove dirt or dust from his person Caution air pressure is not used Warning or clothing Generally a pressure of not more than 30 psi is recommended 13 GEI M1031 B V MAINTENANCE cont d B Insulation and Windings cont d 3 Cleaning with Water and Detergent This method is very effective in cleaning windings when used with a low pressure steam jenny maximum steam flow 30 psi and 90 C To minimize possible damage to varnish and insulation a fairly neutral non conducting A detergent should be used Caution If a steam jenny is not available the cleaning solution may be applied with warm water by a spray gun After the cleaning operation the windings should be rinsed with water or low pressure steam It is advisable to dry the windings Refer to Insulation Resistance section for instructions on how to proceed 4 Cleaning with Solvents Many cleaning fluids are flammable and or toxic To prevent injury to personnel and aA property care should be taken
3. provide basic motor characteristics Nameplates provide a permanent record of motor characteristics plant identification and date of manufacture F Model and Serial Numbers As discussed in section E every motor that is manufactured by GE is provided with a model and serial number which is permanently marked on the motor nameplate and shipping pack These numbers identify basic motor characteristics and pertinent data When contacting a GE Service Shop or representative please refer to the model and serial number GEI M1031 B Il INSTALLATION Warning Coupling belt and chain guards should be installed as needed to protect against accidental contact with moving parts Machines accessible to personnel should be further guarded by screening guard rails etc to prevent them from coming in contact with the equipment Failure to observe these precautions may result in injury to personnel A Location 1 Standard enclosed motors are used where they are exposed to dirt moisture and most outdoor conditions 2 Severe duty enclosed motors are used in highly corrosive or excessively moist areas B Mounting Mount motors securely on a firm flat base If necessary grout in larger motors Motors can be mounted per the chart shown For vertical mounting check with GE a representative for recommendations NEMA Direct Mounting Coupled Belted F1 X x F2 x x W1 x x w2 x x w3 x x w4 x x w5 x
4. 20 25 30 40 900 7 5 10 15 20 25 30 Pitch Diameter NarrowA 3V 5V 8V Outside Diameter GEI M1031 B Maximum sheave width 2 N W 1 4 where N W is the approximate usable shaft length A Maximum sheave width N W Reference table taken from NEMA MG1 Part 14 D Power Supply and Connections 1 Wiring and Grounding Warning Where unexpected starting can be dangerous to personnel do not use automatic reset protection a Warning Motor and control wiring overload protection and grounding should be in accordance with the National Electrical Code and consistent with sound local practices Failure to observe these precautions may result in damage to the equipment injury to personnel or both Stator winding connections should be made as shown on the connection diagram on the motor The motor frame should be grounded by attaching a ground strap from a known ground point to the bronze grounding bolt in the conduit box or on motor frame Terminal board kits are available upon request If a terminal board is required see KS TEFC Value Line catalog Before the conduit box cover is closed be sure that All terminal box connections are fixed tightly The minimum air distances are met The interior of the terminal box is clean and free from foreign materials Cable openings not used should be closed and the closing screws should be fixed a
5. N A W6 x N A W7 x N A Ws x N A w9 x N A Ch x x C2 X x x allowed N A Not Allowed Motors are shipped with drain plugs in a bag Do not install the drain plugs in the frame if an IP44 enclosure is required Caution Install the drain plugs in the frame if IP54 enclosure is required C Alignment 1 Direct Coupling Align motors accurately For direct drive use flexible couplings if possible For drive recommendations consult drive or equipment manufacturers or GE Accurate mechanical alignment is essential for successful operation For base assembly and motor mounting the bolts must be carefully tightened to prevent changes in alignment and possible damage to the equipment It is recommended that a washer be used under each nut or bolt head to get a secure hold on the motor feet As an alternative flanged nuts or bolts may be used Use bolts that are a minimum Grade 5 or ISO 8 8 See Table 2 The recommended tightening torques for SAE Grade 5 bolts or ISO 8 8 bolts are in Table 3 GEI M1031 B Ill INSTALLATION cont d C Alignment cont d 1 Direct Coupling cont d Table 2 Bolt Grade Designations Table 3 Mounting Bolt Torques Recommended Torque Z r Bolt Size in Ft Lb N M 8 8 oR 88 Inch Metric Minimum Maximum N 1 4 M6 5 16 M8 3 8 M10 v M12 5 8 M16 3 4 M20 Grade 5 ISO 8 8 For hardware that is less than SAE Grade 5 use 50 of the above recommended tightening torqu
6. Shaft currents Excessive or insufficient grease Worn out or dirty grease Motor Excessive Vibration Unbalance Misalignment mproper or settled foundation Non uniform air gap Rubbing parts Bent shaft Unbalanced stator current Damaged bearing Low Insulation Resistance or Insulation Failure Insulation Moisture dirt metal particles oil or other contaminants on the insulated windings Wrong voltage Excessive temperature Voltage surges Mechanical damage Excessive vibration with resultant mechanical damage 18 Vil GEI M1031 B FAILURE An extreme overload or electrical failure may result in heating or arcing which can cause the gt insulation to give off noxious fumes All power should be removed from the motor circuit as a Warning precaution even though the circuit has overload protection Personnel should not approach the motor until adequate ventilation of the area has purged the air of fumes When covers of a motor are removed after a failure care should be observed to avoid breathing fumes from inside the motor Preferably time should be allowed for the motor or to cool before attempting any examination or repair Failure to observe these precautions may result in injury to personnel Water should not be applied to any electrically energized equipment because electric shock gt could result in serious or fatal injury In case of fire disconnect all powe
7. e Donot lift both the motor and driven equipment with the motor lifting means e Do not stand on or place objects on the motor Maintenance Safe maintenance practices performed by qualified personnel are imperative Before starting maintenance procedures be positive that e Equipment connected to the shaft will not cause mechanical rotation e Main motor windings and all accessory devices associated with the work area are disconnected from electrical power sources e The motor has been given time to cool Failure to properly ground the frame of the motor can cause serious injury to personnel Grounding should be in accordance with the National Electrical Code and consistent with sound practice These instructions do not purport to cover all details 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 This document contains proprietary information of General Electric Company USA and is furnished to its customer solely to assist that customer in the installation testing operating and or maintenance of the equipment described This document shall not be reproduced in whole or in part nor shall its contents be disclosed to any third party without the written approval of
8. insulation resistance is constant for a one half hour period 3 With the rotor locked mechanically and using approximately 10 of rated voltage pass a current through the stator windings Increase the current gradually until the winding temperature reaches 90 C Do not exceed this temperature Maintain a temperature of 90 C until the insulation resistance becomes constant for a one half hour period C Steps Prior to Initial Start Be sure that the motor is not running and the power supply is disconnected Warning 1 Do not flush out anti friction bearings The bearing grease supplied is sufficient for initial operation 2 Whenever possible examine the machine 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 rotates freely 4 Check all connections with the connection diagram Check all accessible factory made connections for tightness to make sure none has become loose during shipment 5 When the driven machine is likely to be damaged by the wrong direction of rotation it is best to uncouple the drive from its load during the initial start and make certain that it rotates in the correct direction If it is necessary to change rotation interchange any two line supply leads 11 GEI M1031 B IV OPERATION cont d D Initial Start 1 After inspecting the machine carefully make the initial start by following
9. to avoid flames sparks etc Safety glasses should be Warning used and contact with the skin should be avoided The area should be well ventilated or protective equipment should be used Although cleaning with water and detergent is the preferred method solvent cleaning may be used when heat drying facilities are not available Mineral spirits are recommended for use as the cleaning solvent Solvent cleaning of silicone insulated windings leads and space heaters is not recommended Mineral spirits should be used only in a well ventilated area that is free from open s flames Avoid prolonged exposure to vapor Failure to observe these precautions may Warning result in injury to personnel Windings cleaned with solvent should be dried thoroughly by circulation of dry air before voltage is applied 5 Revarnishing Windings After several cleanings with water and detergent it may be necessary to revarnish the windings This varnish is available from the General Electric Company or a GE Authorized Service Shop C Lubrication and Bearings 1 Anti Friction Bearing Relubrication and Maintenance The grease used as a lubricant in grease lubricated anti friction ball bearings loses its lubricating ability over a period of time For a given bearing construction and assembly the lubricating ability of a grease with age depends primarily on the type of grease the size of the bearing the speed at which the bearing op
10. GE Energy GEI M1031 B RECEIVING STORAGE HANDLING AND UNPACKING A Receiving Each shipment should be carefully inspected upon arrival Any damage should be reported promptly to the carrier and a claim filed The nearest GE sales office can provide additional guidance B Storage If the machine will not be put into service immediately certain precautions should be taken to protect the machine while in storage It is recommended that the machine be placed under cover in a clean dry location During storage windings should be protected from excessive moisture by some safe and reliable method of heating such as space heaters to keep the temperature of the windings a few degrees above the temperature of the surrounding air It is recommended that the machine be inspected at periodic intervals the windings meggered and a log kept of pertinent data Refer to Operation section Any significant drop in insulation resistance should be investigated Precautions are taken by the factory to guard against corrosion The machined parts are coated to prevent rust during shipment If the equipment is to be stored examine the parts carefully for rust and moisture and re coat where necessary Grease lubricated machines have the bearings greased at the factory with the cavity approximately 50 full Rotate the shaft of all two bearing machines 10 20 revolutions at two month intervals C Handling The lifting lugs or eyebolts o
11. GEI M1031 B GE Energy Motor Installation and Maintenance Instructions Horizontal AC Small Industrial Motors NEMA 143 326 Frame Totally Enclosed Fan Cooled Severe Duty Energy Saver Models SKSxxxSTEXxx 2012 08 24 GEI M1031 B Table of Contents Subject Page Generali eTO ea sree ver Stee reseetetttpe yp SSESeITennErEN StTrty OE Ue gt a 3 A Howto Properly use this IAStrUuCtiOr MCU oeseri aronet na a 3 B Safety Symbol LEGEN aesan a ar T 3 Er SPS MOLOF operato eese a a a a acddaadoosBecte 4 Il Receiving Storage Handling and UNPACKING esses 5 As RECEVON 5 RE IKSI 0 E 5 CE MONA AEA A 5 PDs UNpAER MOa 6 E Description of Labels ond NomeplateSssrasianssssepieinereiiie non a E RE 6 F Model and Serial Numbers 6 IIL Tarse IiE iE oP Bzr LOCI AAEE B Mounting GE AITITE AAAA AE Direct 00T OIDO PEN 2 End Play Adjustment Bi SBOE DIVO cic oo E D Power Supply ANd CONNECTIONS 9 De MAIR GGG GOUNGIM Oss essssssccssssccccssccczcccdccccccccccccccccccccccccccccccccccccccccccccccccccceccsccccssccscscesssscssccscsscsscssssssssssccsssssssssssssscssssssssssssssssssssssseod 9 2 Allowable Voltage and Frequency 10 au POSION OMENS CONGUE BOX n 10 Vea OPO ON a astr EEEE A Prior to Starting B Insulation Resistance C Steps Prior to Initial Start cccccsssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssessesss
12. b C d m o tightly The gasket in the terminal box cover should be clean and tightly sealed to the cover The condition of all gaskets should be in accordance with protective regulations GEI M1031 B Ill INSTALLATION cont d D Power Supply and Connections cont d 2 Allowable Voltage and Frequency The power supply must agree with the nameplate voltage and frequency The motors will operate but with characteristics somewhat different from nameplate values on line voltages within 10 of nameplate value and frequency within 5 and a combined variation not to exceed 10 Motors identified as usable at 200V will not operate full loads on line voltages below 190V Motors will not meet NEMA MG 1 performance standards including efficiency when operated at 200V 3 Position of the Conduit Box When mounting conditions permit the conduit box may be rotated so that entrance can be made upward downward or from either side IV OPERATION A B Prior to Starting Q If the motor has been stored in a damp location dry it out thoroughly before operating Before energizing the motor for the first time or after an extended shut Warning down it is advisable to check Insulation Resistance power supply and mechanical freedom of the motor Insulation Resistance Before measuring insulation resistance the machine must be at standstill and all p windings to be tested must be electrically c
13. cify quantity and describe the part For information and service refer to the nearest GE Sales Office or GE Authorized Service Shop 19
14. equipment All of the safety warnings and instructions in this book must be followed to prevent injury to personnel The installation and maintenance manual must be kept for future reference during installation operation and maintenance B Safety Symbol Legend Below is a safety symbol table that identifies the safety symbols that appear in this manual and on the equipment WARNING The use of a lightning bolt within an arrowhead symbol enclosed in a yellow triangle indicates warning of dangerous electrical voltage that could cause an electric shock to a person The use of an exclamation point within a yellow triangle indicates to the user that important installation operating and maintenance instructions must be followed Indicates a procedure or condition that if not strictly observed could result in personal injuries or death i CAUTION This symbol identifies any 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 indicates a general note Indicates a procedure or condition that if not strictly observed could result in minor injuries to personnel GEI M1031 B I GENERAL INFORMATION cont d C Safe Motor Operation personnel should perform installation operation and maintenance of electrical machinery For equipment covered by this instruction book i
15. erates and the severity of operating conditions As a result it is not possible to accurately predetermine when new grease must be added Good results can be obtained if the general recommendations stated in this instruction book are followed 14 GEI M1031 B V MAINTENANCE cont d C Lubrication and Bearings cont d The primary function of grease is to supply the essential lubricating oil from the sponge like reservoir of its soap structure Grease lubricated anti friction ball bearings consume only asmall amount of lubricant This lubricant must always be present to avoid rapid wear and bearing failure However excessive or too frequent lubrication may damage the motor Ball bearing motors are adequately lubricated at the factory Motors with grease fittings should be relubricated in accordance with these instructions to provide maximum bearing life To obtain optimum results Chevron SRI 2 grease or a compatible polyurea based grease should be used for relubrication unless special grease is specified on the motor nameplate Regreasing frequency should be in accordance with the table below If in doubt contact GE The procedure below must be followed for safe and effective regreasing 2 Recommended Regreasing Procedure and Frequenc Relubrication should be performed with the motor stationary and disconnected from the power source Extreme caution must be exercised to avoid contact with rotating parts or electrical
16. es There are no ID marks on bolts that are less than SAE Grade 5 2 End Play Adjustment The axial position of the motor frame with respect to the load is important The bearings furnished with these motors are not designed to take any external axial thrust load unless specifically requested by the purchaser Belt Drive The application of pulleys sheaves sprockets and gears on motor shafts are shown in NEMA MG1 14 07 For more information on allowable sheave sizes refer to the AC Motor Selection and Application Guide GET 6812 Align the sheaves carefully to avoid axial thrust on the bearings Belt tension should just prevent slippage when the motor is running at full load Excessive belt tension causes unnecessary load on the bearings This may be especially true on high inertia loads where belts may be tightened to prevent squealing and slipping during acceleration On drives of this type the belts should be allowed to slip during acceleration to prevent the possibility of overloading the motor bearings Refer to Table 4 for V Belt sheave diameter information The belt speed should not exceed 6 000 feet per minute unless otherwise recommended by the manufacturer of Warning the belt and sheave Ill INSTALLATION cont d C Alignment cont d Table 4 V Belt Sheave Diameters Minimum in Inches Horsepower Conventional Synchronous Speed RPM A B C D E 1800 1200 75 10 15
17. fits and critical surfaces of the end shield bearing housing bearing cap and bearings should be free of all nicks scratches or burrs If any polishing is done care should be taken to avoid a deposit of metal dust in and around the bearing assembly c The internal surface of the bearing housing should be coated with a thin film of the recommended grease The shaft and bearing cap should also receive a very light coating of the recommended grease These precautions although not absolutely essential will guard against corrosion of the critical surfaces d Heat the bearing in oil to a temperature between 50 C and 125 C 122 F to 257 F and place it on the shaft Hold it against the shaft shoulder until the bearing cools e Mount drive end end shield If an outer bearing cap was supplied mount the outer bearing cap to the shaft Refer to Table 5 for bolt torque requirements Motor frame sizes 143 to 286 do not have bearing caps f Mount the opposite drive end end shield to the stator frame Refer to Table 6 for recommended bolt torques g Insert the rotor into the stator with appropriate tools Carefully insert the rotor shaft thru the opposite drive end end shield h Assemble the outer bearing cap at the opposite drive end if bearing cap was supplied Replace the shaft slinger i Assemble the fan snap ring grease pipes and fan cover j Mount the drive end end shield to the stator frame Refer to Table 7 for motor shaft
18. l maintenance or repairs are not performed by a GE authorized service shop A General Cleanliness B Inspect the motor at regular intervals depending on service Keep the motor clean and the ventilation openings clear In addition to the daily observation of the overall condition it is recommended that a general inspection routine be set up to periodically check the following items 1 General Cleanliness 2 Insulation and Windings 3 Lubrication and Bearings The interior and exterior of the machine should be kept free from dirt oil grease and conducting dust Oily vapor paper or textile dusts may build up and block off ventilation Any of these contaminants can lead to early motor failure Insulation and Windings 1 General To obtain long life and satisfactory operation of insulated windings they should be kept clean from dirt oil metal particles and other contaminants A variety of satisfactory and acceptable methods are available for keeping equipment clean The choice of method will depend greatly on time availability of equipment and on the insulation system However vacuum and or compressed air cleaning with nonmetallic hose tips should precede cleaning with water and detergent or solvents Tight adhering dirt will require agitation by gentle brushing or wiping a To prevent injury to eyes and respiratory organs safety glasses and suitable ventilation or other protective equipment should be used
19. machine for bearing removal In addition the shaft bearing seat and the bearing itself must be protected during and after disassembly operations Remove bolts securing fan cover Remove the snap ring that secures the fan to the shaft extension Remove the fan from the shaft extension by employing a gear puller If the motor has bearing caps remove the hex head bearing cap screws adjacent to the motor hub which hold the bearing caps both ends Remove the hex head bolts on the outer flange of the end shields which hold the end shields on the frame Carefully pull out the rotor being careful not to damage any of the windings or machined surfaces If it is desirable to reuse the bearing apply a bearing puller to the inner ring 16 GEI M1031 B V MAINTENANCE cont d D Anti Friction Bearing Maintenance cont d 2 Reassembly amp Warning To prevent injury to eyes safety glasses should be used Cleanliness is important when working with bearings Before reassembling a bearing all bearing and machined surfaces should be thoroughly cleaned with suitable solvent Examine the machined fits of the end shield bearing housing slinger and grease cap for burrs It is important that these surfaces be smooth Reassembly of the bearing should be performed in the following manner a Inspect the bearing housing and related parts for foreign material Clean if necessary b The machined
20. mples HP Range Horizontal Mount Easy Valves door openers portable floor sanders motor 50 100 4 operating infrequently one hour per day 200 350 3 Standard Machine tools air conditioning apparatus conveyors 50 100 1 5 one or two shifts garage compressors refrigeration 200 350 1 machinery oil well pumps water pumps wood working machinery Severe Motor for fans machine tools M G sets etc that run 50 100 9 mo 24 hours a day 365 days a year coal and mining 200 350 6 mo machinery motors subject to severe vibration steel mill machinery Very Severe Dirty vibrating applications where end of shaft is hot 50 100 4 mo pumps and fans high ambient temperature 200 350 3 mo Because this method of greasing anti friction bearings tends to purge the housing of used grease over a period of time removal of all grease should be required infrequently AGE authorized Service Shop can clean the bearing cavity and replace the bearings and grease when the motor is removed from service for maintenance or reconditioning D Anti Friction Bearing Maintenance 1 Removal Even though high quality design and workmanship are incorporated in a bearing it sometimes becomes necessary to remove the bearing for maintenance Caution Care must be taken to avoid scratching or nicking the critical surfaces of the balls or rollers Caution anoa Extreme care is required in the disassembly of a
21. n the motor are designed for handling only the motor They are not gt to be used to lift the motor plus additional equipment such as pumps compressors or other Warning driven equipment In the case of assemblies on a common base the lugs or eyebolts provided on the motor are not to be used to lift the assembly and base The assembly should be lifted by a sling around the base or by other lifting means provided on the base In the case of unbalanced loads such as couplings or other attachments additional slings or other effective means should be used to prevent tipping Failure to observe these precautions may result in damage to the equipment injury to personnel or both Before lifting the motor ensure that the eyebolt shoulder is completely seated against the motor frame boss Eyebolt should only be tightened by hand The angle of lift must not exceed a 15 angle with the shank of the eyebolt GEI M1031 B Il RECEIVING STORAGE HANDLING AND UNPACKING cont d C Handling cont d 15 Max Lift Angle No Lift Range Eye Bolt Shoulder j Motor Frame Boss D Unpacking If the machine or machine parts have been exposed to low temperatures unpack it only after it has reached the temperature of the room in which it will be unpacked or located condensation will occur E Description of Labels and Nameplates Motor rating and identification data are furnished on labels and nameplates Labels
22. onnected to the frame and to ground for Warning a time sufficient to remove all residual electrostatic charge Failure to observe these precautions may result in injury to personnel damage to the equipment or both In accordance with established standards the recommended minimum insulation resistance for the stator winding when measured with a 500 volt DC direct indicating ohmmeter with self contained power supply megger is as follows Rs 5MQ Rs is the recommended minimum insulation resistance in megohms at 40 C of the entire stator winding obtained by applying direct potential to the entire winding for one minute See IEEE Recommended Practice for Testing Insulation Resistance of Rotating Machines Publication No 43 for more complete information If the insulation resistance is lower than this value it is advisable to eliminate the moisture in one of the following ways 10 GEI M1031 B IV OPERATION cont d B Insulation Resistance cont d 1 Dry the part in an air circulating oven with the air surrounding the part at 110 C 15 C 5 C until the part has been above 90 C for at least four hours Then the air temperature may be raised to 150 C 15 C 5 C Continue to heat until the insulation resistance is constant for a one half hour period 2 Enclose the motor with a canvas or similar covering leaving a hole at the top for moisture to escape Insert heating units or lamps and leave them on until the
23. que is adequate for the application E Jogging and Repeat Starts Repeated starts and or jogs of induction motors greatly reduce the life of the amp winding insulation The heat produced by each acceleration or jog is much more Caution than dissipated by the motor under full load If it is necessary to repeatedly start or jog a motor it is advisable to check the application with the local GE sales office F Heating Use a thermometer or thermocouple to determine temperature If there is any doubt about the safe operating temperature take the temperature of the part in question and confer with the nearest GE sales office Give full details including all nameplate information Overheating of the machine may be caused by improper ventilation excessive ambient temperature dirty conditions and excessive current due to overload or unbalanced a c voltage 12 GEI M1031 B V MAINTENANCE Before initiating maintenance procedures disconnect all power sources to the machine and any accessories For machines equipped with surge capacitors do not o handle the capacitor until discharged by a conductor simultaneously touching all Warning terminals and leads including ground This discharge conductor should be insulated for handling Replace all normal grounding connections prior to operating Failure to observe these precautions may result in injury to personnel Warranty may be voided if interna
24. r and use a carbon Warning dioxide extinguisher to quench the flame Before operating any motor after a suspected failure it should be inspected for damage Vill REPAIR IX Repairs should be made only by qualified personnel using the materials and processes for which the motor was designed To protect the warranty during the warranty period all repairs must be made in a GE Service Shop or GE approved repair facility Many repairs can be easily performed with only assembly operations if GE replacement parts are available If major repairs are undertaken such as rewinding a stator proper facilities should be available and suitable precautions observed When burning off old insulation materials or when welding near insulation during re winding adequate ventilation must be provided to avoid exposing personnel to noxious fumes Combustion of exhaust must be complete and adequately vented to the outside atmosphere in Warning compliance with acceptable standards Exposure of personnel to air borne inorganic fibers must be avoided by adequate ventilation or by wetting the remaining insulation components following the burning off of the organic materials Failure to observe these precautions may result in injury to personnel RENEWAL PARTS The use of only GE renewal parts is recommended When ordering specify the model number and serial number of the motor complete nameplate data is desirable Spe
25. sssssssssssssssssssssssssssessssssssssssssessss DA aTi nol ESAO La E Jogging and Repeat Starts Fs SVU EAE E EE V KOE TEESE aT A General Cleanliness B IMSUIATION GAG WinNT Saa ER RAA T CT a cl ce laen a AN 2 Vacuum and Compressed Air Cleaning 3 Cleaning with Water and Detergent nncccccsssussssssssssssssssssssssssssssssssssssssssssssssssssssssssssesssssssssssssessssssscescesscsssscesesseeceeeeecees E a AYO Eae L a ose tte 5 Revarnishing Windings C Lubrication and Bearings 1 Anti Friction Bearing Relubrication amp MGINteNON Ce sssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssst 2 Recommended Regreasing Procedure ANd Frequency ou 15 D Anti Friction Bearing MGINteMG Ce iccccccccssssccteceseccsccccccccocseccesseeteesscccccessccccccsssseceeseccccenssscccccssssesessseeccessssencesbasessedseeeceessaeeneensanneeds 16 ee PROM OWG ATI AEE E A 16 A E a Wi acaaesccccccccccccccccccccccsccccccssssasaaaaasssaasassaaasaasaaaasasasssaaaasssaasassaaasasaaaaadasdddddasasassssssssasssssssssssssssssssssssssssissasastissssstssassueetdiiiisisiiiiiiss 17 Vi SOPSFAE OMG DIFFICUILIGS aO NONONONO ASAE ASAE SAARA EAEAN 18 VII Failure VIII Repair TPR REINS E CIES E A NS 19 I GENERAL INFORMATION A How to Properly use this Instruction Manual GEI M1031 B This manual has been written to assist the user with proper procedures when handling installing operating and maintaining the
26. t is important to observe safety precautions to protect personnel from possible injury Be sure to keep the installation and maintenance information for future reference All warnings and cautions must be followed j WARNINGS High voltage and rotating parts can cause serious or fatal injuries Qualified Installation e Avoid contact with energized circuits and rotating parts e Avoid bypassing or rendering inoperative any safeguards or protective devices Avoid use of automatic reset thermal protection where unexpected starting of equipment might be hazardous to personnel Avoid contact with capacitors until safe discharge procedures have been followed Be sure the shaft key is captive before the motor is energized Avoid long exposure in close proximity to machinery with high noise levels Use proper care and procedures in handling lifting operating and maintaining the equipment Use proper protective gear when handling lifting installing operating and maintaining the equipment If eyebolts are used for lifting motors they must be securely tightened and the direction of the lift must not exceed a 15 angle with the shank of the eyebolt Do not use eyebolts in an ambient below 0 F At lower temperature 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 e Do not use the shaft as a means for lifting
27. the regular sequence of starting operations in the control instructions 2 Atinitial start the rate of rise of the bearing temperature is more indicative of trouble than total temperature When starting a machine for the first time the bearing temperature should be observed for a minimum of two hours If at any time the rate of temperature rise exceeds 2 C minute shut down the machine immediately and make an investigation of lineup conditions and if necessary the bearing assembly 3 Check motor operation under load for an initial period of at least one hour to observe whether any unusual noise or hot spots develop 4 In the event of excessive vibration or unusual noise disconnect the machine from the load and check the mounting and alignment 5 Space heaters when supplied should be de energized during motor operation 6 Check the operating current against the nameplate value Do not exceed the value of nameplate amperes times service factor if any under steady continuous load 208 Volt system When a 230 460 Volt motor with a nameplate which states usable at 200V _ Hp Amps 1 0SF is operated on a 208 Volt system the motor slip will increase approximately 30 and the motor locked rotor pull up and breakdown torque values will be reduced by approximately 20 to 30 Therefore it should be determined by the user that the motor will start and accelerate the connected load without injurious heating and that the breakdown tor
28. wiring if the motor must be relubricated while running Failure to observe these precautions may result in damage to the equipment injury to personnel or both Warning Run the motor until warm Stop the motor and disconnect it from the power supply c Clean dirt and debris from around the inlet lubrication fitting and the grease relief plug d Clear the opening and relief tube of hardened grease This may be accomplished with a twisted wire brush or sturdy pipe cleaner e While the motor is still warm add grease with a hand operated grease gun until grease has been added to about 50 65 of the grease cavity volume listed below oo Bearing Size on Motor Regreasing Cavity Nameplate size oz 6211 3 5 6212 3 9 6213 5 6 6312 8 7 A standard 10 000 psi 16 ounce grease gun delivers approximately 0 04 oz of grease with each pump and a 24 ounce gun delivers approximately 0 06 oz of grease f Restart the motor and resume operation grease leakage and or bearing damage To avoid damage to equipment ny Failure to observe the foregoing instructions for regreasing may result in Caution bearings and grease must be free of dirt 15 MAINTENANCE cont d C Lubrication and Bearings cont d 2 Recommended Regreasing Procedure and Frequency cont d GEI M1031 B Recommended Regreasing Frequency Type of Lubrication Interval Years Service Typical Exa
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