Emerson 986269 Outboard Motor User Manual
Contents
1. ctu itii quati exe 14 sdb oic craneae 15 EMI ei N2cesjcm m X S 16 XV INSTALLATION RECORD iire ee E Dn Uri sc nan Ux ax EE octane aai 18 U S ELECTRICAL MOTORS Shipment amp INSTALLATION AND MAINTENANCE gt Handling l SHIPMENT Prior to shipment all Titan ll Motors undergo extensive electrical and mechanical testing and are thoroughly inspected Upon receipt of the motor carefully inspect the unit for any signs of damage that may have occurred during shipment Should such damage be evident unpack the motor at once in the presence of a claims adjuster and immediately report all damage and breakage to the transportation company and U S Electrical Motors When contacting U S Electrical Motors concerning the motor be sure to include the complete motor identification number frame and type which appears on the nameplate see installation record in this manual Il HANDLING The equipment needed to handle the motor includes a hoist and spreader bar arrangement of sufficient strength to lift the motor safely The spreader bar arrangement should always be employed whenever multiple lifting lugs or eyebolts are provided See Figures 1A amp 1B The spreader bar should have the lifting hooks positioned to equal the span of the eyebolts or lifting lugs2. 2 ENE 15 13 12 3 7 ODP WPI 15 9 M ee 7 UY 5 LN S 4 i Lut IZ TANK 7 Lamm v SE 22 ez 17 12 11 3 2 co Stator Rotor Shaft Stator Coils Bearing Bearing Bracket Bearing Cap Grease Drain Plug Air Deflector 10 Shaft Seal Slinger 11 Stator Housing Frame 12 Ventilation Baffles 13 Terminal Box 14 Motor Lifting Eyes 15 Dowel Pin Holes OONOORWOND Stator Rotor Shaft Stator Coils Bearing Bearing Bracket Bearing Cap Grease Drain Plug not shown Air Deflector Shaft Seal Slinger Stator Housing Frame Terminal Box Tophat Tophat Lifting Eye Air Filter Access Cover Air Pressure Differential Port Dowel Pin Holes 15 U S ELECTRICAL MOTORS INSTALLATION AND MAINTENANCE Troubleshooting XIV TROUBLESHOOTING TROUBLE POSSIBLE CAUSE CORRECTION Motor will not start Does not rotate Usually line trouble Check source of power supply See single phasing at starter oafety instructions Check overloads controls and fuses Check voltage compare with nameplate voltage Rotates but does not come up to Disconnect motor from load to verify if speed Load too heavy motor starts without load Reduce load or replace motor with motor of greater load capacity Excessive motor h
3. The ratio is obtained by dividing the second reading by the first reading and is based on a good insulation system increasing its resistance when subjected to a test voltage for a period of time The ratios are as follows 10 minute 1 minute 60 second 30 second Dangerous less than 1 0 Poor less than 1 1 Poor 1 0to1 4 Questionable 1 110 1 24 Questionable 1 5 1 9 Fair 1 25to 1 3 Fair 20to2 9 Good 1 4to 1 6 Good 3 0t0 4 0 Excellent Over to 1 6 Excellent Over 4 0 If a low insulation resistance reading is obtained in either the individual test or dielectric absorption ratio test thoroughly clean and dry the windings Recheck insulation resistance and dielectric absorption ratio NOTE Slightly lower dielectric absorption ratios may be acceptable when high initial insulation resistance readings are obtained 1 000 megohms Refer any questions to U S E M Product Service Department For additional information on insulation testing refer to IEEE Transaction No 43 Start up Preparations after Storage A Motor should be thoroughly inspected and cleaned to restore to an As Shipped condition B If motor has been in storage for less than 6 months remove grease drain plugs at each end of the motor Remove a small quantity of grease with a scavenger and replace drain plugs If any moisture or contamination is evident in the grease it must be completely changed by disassembling the unit and repacking per Sect
4. Temperature Tooo So Po p S Insul Resistance Jo o _ e Condition 18
5. TITAN LARGE AC ELECTRIC MOTORS Emerson Motors 8100 West Florissant Ave St Louis MO 63136 Phone 888 637 7333 Fax 314 553 2087 www emersonmotors com AIR CONDITIONING amp REFRIGERATION INSTITUTE P N 986269 HORIZONTAL MOTORS WITH ANTI FRICTION BEARINGS EMERSON INSTALLATION OPERATION AND MAINTENANCE MANUAL Motor Technologies The Emerson logo is a trademark and service mark of Emerson Electric Co All other marks are the properties of their respective owners 4 amp EMERSON Motor Technologies 2342048 Rev 10 02 EMERSON CONSIDER IT SOLVED OEmerson Motor Company 2002 ll Rights Reserved EMERSON CONSIDER IT SOLVED OEmerson Motor Company 2002 ll Rights Reserved U S ELECTRICAL MOTORS Safety INSTALLATION AND MAINTENANCE SAFETY FIRST High voltage and rotating parts can cause serious injury or loss of life Safe installation operation and maintenance must be performed by qualified personnel Familiarization with and adherence to NEMA MG2 the National Electrical Code and local codes is recommended It is important to observe safety precautions to protect personnel from possible injury Personnel should be instructed to 1 Disconnect all power to motor and accessories prior to initiating any maintenance or repairs 2 Avoid contact with rotating parts 3 Act with care in accordance with this manual s prescribed procedures in handling and installing this equipment 4 Be sur
6. CHEVRON U S A INC CHEVRON SRI GREASE No 2 SHELL OIL CO DOLIUM R EXXON COMPANY U S A POLYREX EM 13 U S ELECTRICAL MOTORS Renewal Parts INSTALLATION AND MAINTENANCE and Service TABLE 4 RECOMMENDED FASTENER TORQUE VALUES Torque Ft Lbs 1 4 20 UNC 5 16 18 UNC 3 8 16 UNC 7 16 14 UNC 1 2 13 UNC 9 16 12 UNC 5 8 11 UNC 3 4 10 UNC 7 8 9 UNC 1 8UNC 1 1 8 7 UNC 1 1 4 7 UNC 1 3 8 6 UNC 1 1 2 6 UNC Based upon using a dry unlubricated Grade 5 fastener XII RENEWAL PARTS AND SERVICE Parts lists for specific units can be furnished upon request Parts may be obtained from local U S Motors distributors and authorized service shops or via the U S Motors Distribution Center EMERSON MOTOR CO DISTRIBUTION CENTER 3363 MIAC COVE MEMPHIS TN 38118 PHONE 901 794 5500 FAX 901 366 2661 TABLE 5 MAXIMUM MOTOR WEIGHTS AND FILTER REMOVAL CLEARANCE FRAME ODP WP WPIIFILTER REMOVAL CLEARANCE 3500 Ibs 3800 Ibs 4100 Ibs 4400 Ibs 4800 Ibs 5100 Ibs 5500 Ibs 5800 Ibs 5400 Ibs 6300 Ibs 6300 Ibs 7200 Ibs 7500 Ibs 8400 Ibs 8600 lbs 9500 108 14 U S ELECTRICAL MOTORS INSTALLATION AND MAINTENANCE Cutaway Drawings CUTAWAY DRAWINGS 11 1 4 14 a 11 1 7 ZW 2 7 IO dd L5 O
7. FI oz 6313 65 6316 80BCO3X3 6318 906 03 3 6220 100BCO2X3 6320 3 6322 6226 100BCO3X Bal Bal Ball Ball Ball 110BCO2X3 Ball Bali Bal Bal Bal 226 130RU02M30 lindrical Rilr NU228 140RU02M30 lindrical C2220 CARB Toroidal Rilr dp all 12 d N A 6222 CUN 21 16 6228 140BCOZX3 6232 160BCO2X3 25 6234 i170BCO2X3 Bal 29 6334 170BC03X3 Bal 46 NU220 100RUO2M30 Cylindrical Rir 11 NU22 14 16 19 L4 C2222CARB N A _ Toroidal Rilr 18 C2226CARB 25 NU222 110RU02M30 lindrical Rilr For motors mounted vertically or in hostile environments reduce intervals shown by 50 percent Oo For bearings not listed in Table 2 the amount of grease required may be calculated by the formula G 0 11xDxB Where G Quantity of grease in fluid ounces D Outside diameter of bearing in inches B Bearing width in inches Titan Il motors are provided as standard with polyurea based NLGI Number 2 grease which is interchangeable with any of the following recommended greases TABLE 3 Emerson Motor Co Approved Greases For Titan II Motors with Antifriction Bearings MANUFACTURER DESCRIPTION U S ELECTRICAL MOTORS GREASE No 83343
8. Foot Check Check and correct any soft foot condition to assure that equal pressure is exerted on each motor foot by the following shimming procedure Bolt all motor feet down solidly to the motor bedplate or foundation Mount the base of the dial indicator from the motor s foundation and place and zero out the indicator on the motor shaft or coupling Back off one of the take off end bolts and check indicator for change in reading a 001 inch reading is maximum Shim at foot if required and go to other take off end bolt This procedure should be repeated on the opposite end until no reading is greater than 001 inches D HotAlignment Itis possible for motor shaft height to change relative to the driven equipment and this should be compensated for during the alignment procedure Recheck parallel alignment vertical of coupled drive by repeating after normal operating temperature is reached If shimming is changed repeat alignment procedure to the extent necessary to assure proper alignment Electrical Connection Hefer to the motor nameplate for power supply requirements and to the connection diagram for connection parameters Be sure connections are tight Recheck carefully and assure that they agree with the connection diagram Insulate all connections with electrical tape to insure that they will not short against each other or to ground Be sure the motor is grounded to guard against electrical shock Refer to the National Electrical Code H
9. S Table of Contents INSTALLATION AND MAINTENANCE SECTION PAGE pii btt E E i l SMPMENT 1 Il zzi B ND CK B 1 Ill STORACE m 2 IV INSTALLA TION LOCATION 5 V FOUNDATION m 5 VI INITIALINSTFALLA 6 1 Coupling or Pulley Installation TE o OS I UTRUM 6 Ze 6 omaes t aR OE 6 nei ES 7 FeV FSI niejciio E Em 8 Emm 8 Te PRENNE RETE TE 9 VII Ale niMelzloue bE 9 IECIT Qe 9 2 Inspection Cleaning o mE 10 IE NI cp a 10 IX DISASSEMBLY e 11 X REA e 11 Biz gene Mem E E 12 XII RENEWAL PARES AND SERVICE
10. The eyebolts or lifting lugs provided are intended to lift the motor weight only See Table 6 for motor weights CAUTION Lifting the motor by means other than specifically noted may result in damage to the motor or injury to personnel Note that the eyebolt on the top of WPII enclosure is intended for lifting the tophat only FIGURE 1A FIGURE 1B Typical Construction With Two Eyebolts Typical Construction With Four Lifting Lugs U S ELECTRICAL MOTORS Storage INSTALLATION AND MAINTENANCE STORAGE 1 When to put a Motor in Storage If a motor is not put into immediate service one month or less or if it is taken out of service for a prolonged period special storage precautions should be taken to prevent damage The following schedule is recommended as a guide to determine storage needs A Out of service or in storage less than one month no special precautions except that space heaters if supplied must be energized at any time the motor is not running B Out of service or in storage for more than one but less than six months store per Items 2 A through 2F 2H 3 and 4 Out of service or in storage for six months or more all recommendations 2 Storage Preparation A Where possible motors should be stored indoors in a clean dry area When indoor storage is not possible the motors must be covered with a tarpaulin This cover should extend to the ground Do not tightly wrap the motor as this
11. andbook NFPA No 70 and to local electrical codes for proper wiring protection and wire sizing Be sure proper starting equipment and protective devices are used for every motor For assistance contact the motor starter manufacturer Apply the above precautions to all accessories as well U S ELECTRICAL MOTORS Initial INSTALLATION AND MAINTENANCE Installation 5 Reversing Rotation The direction of rotation may be reversed by interchanging any two of the three power phases to the motor leads Be sure that the power is off and steps are taken to prevent accidental starting of the motor before attempting to change any electrical connections CAUTION Some motors have unidirectional ventilating fans Running such a unit in reverse for any extended length of time will result in motor damage On motors that are unidirectional the direction of rotation is noted by an arrow mounted above the take off shaft and by a warning plate mounted near the main nameplate To determine direction of rotation for which leads are connected apply power momentarily and observe rotation Motor should be uncoupled from driven equipment to insure driven equipment is not damaged by reverse rotation Motor coupling may require removal or suppport if motor is operated uncoupled from driven equipment 6 Initial Start After installation is completed but before motor is put in regular service make an initial start as follows A Insure that motor and control d
12. ases of different bases lithium polyurea clay etc may not be compatible when mixed Mixing such greases can result in reduced lubricant life and premature bearing failure Prevent such intermixing by disassembling motor removing all old grease and repacking with new grease per B of this section Refer to Table 3 for recommended grease Run the motor for 15 to 30 minutes with the drain plug removed to allow purging of any excess grease to eliminate the possibility of overgreasing Shut off unit and replace the drain plug Put motor back into operation CAUTION Overgreasing can cause excessive bearing temperatures premature lubricant breakdown and bearing failure Care should be exercised against overgreasing B Change of Lubricant Motor must be disassembled as outlined in Section IX Disassembly Remove all old grease from bearings and housings including all grease fill and drain holes Inspect and replace damaged bearings Fill bearing housings both inboard and outboard of bearing approximately 30 percent full of new grease Grease fill fittings should be fully charged with new grease Inject new grease into bearing between rolling elements to fill bearing Remove any excess grease extending beyond the edges of the bearing races and retainers 12 U S ELECTRICAL MOTORS e INSTALLATION AND MAINTENANCE Lubrication Table 2 Suggested Regreasing Quantities and Intervals Grease Lubrication interval Type
13. avities before it sets or solidifies and becomes an integral part of the principal foundation In order to function properly the principal foundation should be allowed to fully set through chemical reaction and dehydration as recommended by the grout manufacturer prior to motor installation MOUNTING FIGURE 2 BOLT SOLE PLATE TYPICAL MOTOR MOUNTING ARRANGEMENT fats aa 59 e Says ata i aa aa fe 25 a 2 a afale fe Pal ofa cats WEDGES VI U S ELECTRICAL MOTORS Initial INSTALLATION AND MAINTENANCE Installation INITIAL INSTALLATION 1 Coupling or Pulley Installation Remove the shaft locking device shipped on motor as applicable Wash protective coating from the motor shaft extension s with solvent Install couplings or pulleys on motor shaft per manufacturers recommended fit and mounting practices A Caution Hammering or pounding with a mallet to install couplings or pulleys will damage bearings In belted applications the driver pulley should be positioned as close to the shaft shoulder as possible to assure longest bearing life and keep shaft bending moment to a minimum Take care to ensure that the inboard edge of the pulley hub does not ride up on the shaft shoulder blend radius A Caution B
14. ble material or where flammable gases and or dust may be present unless motor is specifically built for that environment and is U L labeled accordingly FOUNDATION Concrete reinforced as required makes the best foundation particularly for large motors and driven units A sufficient mass provides rigid support that minimizes deflection and vibration It may be located on soil structural steel or building floors provided the total weight motor driven unit and foundation does not exceed the allowable bearing load of the support Allowable bearing loads of structural steel and floors can be obtained from engineering handbooks building codes of local communities give the recommended allowable bearing loads for different types of soil It is recommended that a fabricated steel base sole plate be used between motor feet and foundation See Figure 2 Base foot pads should be level and in the same plane Grouting Grouting is the process of firmly securing equipment to a concrete base This base is a continuation of the main foundation designed to dampen any machine vibration present and prevent the equipment from shaking loose during operation A serviceable and solid foundation can be laid only by careful attention to proper grouting procedure In practical terms grout is a plastic filler which is poured between the motor sole plate and the foundation upon which it is to operate Being plastic it is expected to fill all spaces and c
15. ced remove bearings from rotor shaft with a bearing puller Pull on inner bearing race to remove bearings without damage To remove filters on weather protected units for inspection and cleaning remove end cover and rotate latch Slide filter out of tophat assembly Hazardous Location Motors Underwriters Laboratories Requirements These motors are built to specifications approved by Underwriter s Laboratories Assembly and inspection is made by authorized personnel at our factory before the Underwriter s Label is affixed The Label is void if the unit is disassembled at other than U S Electrical Motors plant of manufacture or a U S Electrical Motors authorized and U L approved service shop unless specific approval for such action is obtained from Underwriter s Laboratories FIGURE 4 FIGURE 5 5 BEARING BRACKET 2 BEARING 3 BEARING 4 GREASE FILL FITTING 5 GREASE DRAIN PLUG l CLEARANCE TO REMOVE FILTER REASSEMBLY B DOWEL PIN HOLES W Clean all machined and mating surfaces on bearing caps bracket fits etc Remove old grease from grease cavities and bearings Carefully inspect bearings for nicks dents or any unusual wear patterns Damaged bearings must be replaced If motor is supplied with insulated bearing shaft journals inspect for damage and repair as necesary before reassembly U S ELECTRICAL MOTORS INSTALLATION AND MAINTENANCE LUbrication E Reassemble moto
16. e unit and accessories are electrically grounded and proper electrical installa tion wiring and controls are used in accordance with local and national electrical codes Hefer to National Electrical Code Handbook NFPA No 70 Employ qualified electricians 5 Be sure equipment is properly enclosed to prevent access by children or other unauthorized personnel in order to prevent possible accidents 6 Be sure shaft key is fully captive before unit is energized 7 Provide proper safeguards for personnel against rotating parts and applications in volving high inertia loads which can cause overspeed 8 Avoid extended exposure to equipment with high noise levels 9 Observe good safety habits at all times and use care to avoid injury to yourself or damage to your equipment 10 Be familiar with the equipment and read all instructions thoroughly before installing or working on equipment 11 Observe all special instructions attached to the equipment Remove shipping fixtures if so equipped 12 Check motor and driven equipment for proper rotation and phase sequence prior to coupling Also check if a unidirectional motor is supplied and note proper rotation 13 Do not apply power factor correction capacitors to motors rated for operation with variable frequently drives Serious damage to the drive will result if capacitors are placed between the motor and drive Consult your drive supplier for more information U S ELECTRICAL MOTOR
17. elt tension should not exceed the transmission drive manufacturers recommendations Excessive belt tension reduces belt life Overload due to overtensioning of belts reduces bearing life and can induce shaft fatigue failure Caution Excessive bending movement due to placing of pulley far out on the shaft extension will reduce bearing life and may lead to shaft fatigue failure A Caution Placing the pulley hub onto shaft against the shaft shoulder blend radius may cause a large stress riser in the shaft resulting in shaft fatigue failure Prevent this from occurring by using a chamfered spacer ring or chamfering the end of the hub bore Rough Alignment Inspect sole plate mounting pads and bottom of motor feet for dirt or irregularities that would prevent proper seating Position and shim the motor such that the coupling hubs are aligned within 1 32 and the motor shaft is level The motor shaft must be slightly lower than the driven shaft to allow for final adjustment shims Final Alignment Accurate shaft alignment between motor and driven equipment is essential for trouble free operation Im proper alignment can result in vibration bearing overload and excessive shaft stresses Flexible couplings may not adequately compensate for excessive misalignment Whenever aligning a motor to driven equipment keep the following rules in mind not place more than five shims in a shim pack under any one machine foot as the fl
18. evice connections agree with wiring diagrams B Insure that voltage phase and frequency of line circuit power supply agree with motor nameplate C Check insulation resistance according to Section Ill Storage Part D Check all foundation and base bolts to insure that they are tight E Ifmotorhas been in storage either before or after installation refer to Section Ill Storage Part 4 for preparations F Check for proper or desired rotation See Part 5 of this section G Insure that all protective devices are connected and are operating properly H Run motor at minimum possible load long enough to be certain that no unusual condition develops Listen and feel for excessive noise vibration clicking or pounding If any are present stop motor immediately Investigate the cause and correct before putting motor into service In the case of vibration see Part 7 of this section CAUTION Repeated trial starts can overheat the motor particularly for across the line starting or the external starting equipment If repeated trial starts are made allow sufficient time between starts to permit heat to be dissipated from windings and controls to prevent overheating Refer to Starting Duty Nameplate if supplied and NEMA MG1 12 54 MG1 20 42 and MG1 20 43 for allowable starting frequency and load inertia WR VII U S ELECTRICAL MOTORS Normal INSTALLATION AND MAINTENANCE Operation P When checks are satisfactory to th
19. exibility of the shim pack will contribute to a soft foot condition After any corrective adjustment tighten foot bolts securely and recheck alignment When making shim adjustments change only one foot at a time Recheck alignment after the motor has been in service for approximately one week and readjust as necessary A Angular Alignment See Figure 3A Check for angular misalignment of motor to driven unit shaft See Figure 3A Measure distance between coupling hub faces with feeler gauges at four places equally spaced around the outside diameters Position motor as necessary to be within the maximum allowable misalignment of 001 in per foot of coupling radius U S ELECTRICAL MOTORS Initial INSTALLATION AND MAINTENANCE Installation B Parallel Alignment See Figure 3B Fasten a dial indicator onto one coupling hub with the indicator button on the cylindrical surface of the opposite coupling hub Rotate shafts together and take readings at four points 90 apart Relocate motor until total indicator movement in full rotation does not exceed 002 Transfer indicator to opposite hub and repeat the parallel alignment procedure Recheck angular alignment as described in Step A FIGURE 3 FLEXIBLE COUPLINGS MEASURE DISTANCE BETWEEN FACES SZ WIN gt Wr LS 7 LOAD RE LOAD MOTOR 5 2 7 FLANGE RHEE FIGURE 3A FIGURE 3B ANGULAR MISALIGNMENT PARALLEL ALIGNMENT C Soft
20. greater capacity motor Clean motor intake and exhaust areas Clean filters or screens if motor is so equipped See safety section Unbalanced voltage Check voltage all phases Open stator windings Disconnect motor from load Check idle amps for balance in all three phases Check stator resistance in all Dirt in motor intake or exhaust openings three phases for balance See safety section Over under voltage Check voltage and compare to nameplate voltage Ground Locate with test lamp or insulation tester and repair Improper connections Recheck connections Installation Record XV INSTALLATION RECORD NAMEPLATE ID CUSTOMER ID FRAME TYPE HOHSEPOWEH 0 3 VOLTAGE PHASE FREQUENCY AMPS DESIGN CODE DATE OF PURCHASE DATE INSTALLED PURCHASED FROM LOCATION OF MOTOR LLL ANSTALLATION DRIVE END BEARING OPPOSITE END BEARING MOTOR RESISTANCE LINE TO LINE AT TIME OF INSTALLATION INSULATION TO GROUND READING AT TIME OF INSTALLATION GRADE amp TYPE OF LUBRICANT USED INSPECTION RECORD DATECHECKED ooo ooo ooo __ ass Lubrication dL LLL LLL Excess Noise Speed _ Voltage o p p p ams Po Alignment
21. ion XI Lubrication C If motor has been in storage for 6 months or more grease must be completely changed by disassembling the unit and repacking per Section XI Lubrication D The winding must be tested to obtain insulation resistance and dielectric absorption ratio as described in Part 3 of this section E fstorage has exceeded one year the U S E M Quality Assurance Department must be contacted prior to equipment start up U S ELECTRICAL MOTORS Installation INSTALLATION AND MAINTENANCE Location amp Foundation INSTALLATION LOCATION When selecting a location for the motor and driven unit keep the following items in mind 1 The location should be clean dry well ventilated properly drained and provide accessibility for inspection lubrication and maintenance Ambient vibration should be kept to a minimum Outdoor installations on Open Dripproof motors require protection from the elements 2 Thelocation should also provide adequate space for motor removal without shifting the driven unit 3 Thetemperature rise of a standard motor is based on operation at an altitude not higher than 3 300 feet above sea level See NEMA MG 1 20 40 for normal service condition 4 To avoid condensation inside of motor motors should not be stored or operated in areas subject to rapid temperature changes unless they are energized or protected by space heaters 5 The motor should not be installed in close proximity to any combusti
22. is point increase the load slowly up to rated load and check unit for satisfactory operation 7 Vibration Motors are supplied as standard in accordance with NEMA MG 1 section 7 which dictates that motor no load vibration when mounted on a resilient base shall not exceed the limits as outlined in the following table TABLE 1 NO LOAD VIBRATION LIMITS Velocity Inches per second Speed RPM Rotational Frequency Hz peak If vibration is deemed excessive check for and correct any misalignment and or soft foot condition per item 3 of this section NORMAL OPERATION Start the motor in accordance with standard instructions for the starting equipment used Connected load should be reduced to the minimum particularly for reduced voltage starting and or high inertia connected loads until the unit has reached full speed 1 General Maintenance Routine maintenance is the best assurance of trouble free motor operation it prevents costly shutdown and repairs Major elements of a controlled maintenance program include A Trained personnel who KNOW the work Systematic records which contain at least the following Complete nameplate data Prints wiring diagrams certified outline dimensions Alignment data departures from perfect alignment allowance for temperature Winding resistance and temperature Results of regular inspection including vibration and bearing temperature data as applicable Documenta
23. lvent dampened cloth or use suitable soft bristle brush DO NOT SOAK Oven dry 150 175 F solvent cleaned windings thoroughly before reassembly After cleaning and drying the windings check the insulation resistance Refer to Section III Part 3 for procedure Vill DOWELING Doweling the motor and driven unit accomplishes the following 1 Restricts movement of the motor and driven unit 2 Easesrealignment if motor is removed from base 3 Temporarily restrains the motor should mounting bolts loosen The following procedure for inserting dowel pins is recommended See Figure 5 1 Checkthe alignment after the unit has been in operation approximately one week Correct if necessary Drill through motor feet on drive end and into base Drill diameter must be slightly smaller than the intended dowel size to allow for reaming operation 3 Ream holes in the feet and base to the proper diameter for the pins light press fit Clean out the chips 4 Insert dowel pins 10 U S ELECTRICAL MOTORS Disassembly INSTALLATION AND MAINTENANCE amp Reassembly DISASSEMBLY See Figure 4 for Bearing Housing Cross Section O W gt Disconnect power Refer to section on Safety page i Remove grills and or weather protected tophat as required Remove bearing cap screws Remove bearing temperature detector probes from brackets as applicable Remove bracket to stator bolts and remove brackets If bearings are to be repla
24. o 1000 VDC 1001 and up 500 to 2500 VDC 2500 VDC optimum Forcomparison the reading should be corrected to a 40 base temperature This may be done by utilizing the following R40C Kt X Rt Where R40C insulation resistance in megohms corrected to 40 C Rt measured insulation resistance in megohms Kt temperature coefficient from Graph 1 GRAPH 1 SNM Ld LLL LLL PE TING LLL UM PPT EHE 1 0 05 0 1 0 5 1 0 5 10 50 100 10 10 20 30 40 Winding Temperature 50 60 70 80 90 100 110 ADAPTED FROM IEEE 43 Installation Resistance Temperature Coefficient Kt U S ELECTRICAL MOTORS Storage INSTALLATION AND MAINTENANCE C Insulation resistance readings must not drop below the value indicated by the following formula Rm Kv 1 Rm minimum insulation in megohms at 40 C Kv rated motor voltage in kilovolts D Dielectric Absorption Ratio In addition to the individual test reading a dielectric absorption ratio may be required The dielectric absorption ratio is obtained by taking megohmmeter readings at a one minute and ten minute interval or when hand powered megohmmeters are used at a thirty second and sixty second interval The voltage should be the same as outlined in Part A of this procedure
25. r blowing warm air into the motor G Bearing cavities must be completely filled with lubricant during long term storage Remove the drain plug and fill cavity with grease at the grease inlet until it begins to purge from the drain hole then replace the drain plug Refer to Section XI Lubrication for recommended greases At approximately 2 month intervals a small quantity of grease should be injected into grease fitting with drain plug removed Exiting grease should be inspected for moisture and contamination If moisture or contamination is present the motor bearings should be inspected and fresh grease installed U S ELECTRICAL MOTORS Storage INSTALLATION AND MAINTENANCE All motors must have the shaft rotated a few turns once month to maintain a lubricant film on bearing races 3 Periodic Maintenance Insulation History The only accurate way to evaluate the condition of the winding insulation is to maintain a history of the insulation readings Over a period of months or years these readings will tend to indicate a trend lf a downward trend develops or if the resistance drops too low thoroughly clean and dry the windings retreating if necessary The recommended insulation resistance test is as follows A Using a megohmmeter with winding at ambient temperature apply DC voltage noted below for 60 seconds and take reading Rated Motor Voltage Recommended DC Test Voltage 600 and less 500 VDC 601 to 1000 incl 500 t
26. r by reversing the disassembly procedure in Section IX Disassembly Bearings should be installed per bearing manufacturer s recommended procedure Pack bearings with grease per Section XI Lubrication F Torque bolts per values in Table 4 G Touch up any scratched or chipped paint to protect motor surfaces xI LUBRICATION A Relubrication of Units in Service Units with grease lubricated bearings are pre lubricated at the factory and normally do not require initial lubrication Relubricating interval depends upon speed type of bearing and service Refer to Table 2 for suggested regreasing intervals Note that operating environment and application may dictate more frequent lubrication Motor must be at rest and electrical controls should be locked open to prevent energizing while motor is being serviced Refer to section on Safety page 1 If motor is being taken out of storage refer to Section Storage Part 4 for preparation instructions Torelubricate bearings remove the drain plug Inspect grease drain and remove any blockage caked grease or foreign particles with a mechanical probe or scavenger take care not to damage bearing Under NO circumstances should a mechanical probe or scavenger be used while the motor is in operation Add new grease at the grease inlet New grease must be compatible with grease already in the motor refer to Tables 2 and 3 for compatible greases and replenishment quantities A CAUTION Gre
27. tion of any repairs Lubrication data method of application type of lubricant used maintenance cycle by location p mE du DO fu c U S ELECTRICAL MOTORS Normal Operation INSTALLATION AND MAINTENANCE amp Doweling 2 Inspection amp Cleaning Stop the motor before cleaning AXCAUTION See section safety page i Clean the motor inside and outside regularly The frequency depends upon actual conditions existing around the motor Use the following procedures as they apply A Wipe any contaminants from external surfaces of the motor B Hemowve dirt dust or debris from ventilating air inlets Use compressed air as necessary Never allow dirt to accumulate near air inlets Never operate motor with air passages blocked or restricted For stubborn dirt n tubes of Totally Enclosed Tube Cooled Motors use Tool Similar to a shotgun ramrod A CAUTION When using compressed air always use proper eye protection to prevent accidental eye injury C Filters in weather protected top hats should be removed and cleaned per filter manufacturer s recommendations D Clean motors internally by vacuuming or blowing with clean dry compressed air Generally a pressure not exceeding 30 PSI is recommended E When dirt and dust are solidly packed or windings are coated with oil or greasy grime disassemble the motor and clean with solvent Use only high flash naphtha mineral spirits or Stoddard solvent Wipe with so
28. umming High voltage Check input voltage and proper motor lead connection Noise Unbalanced rotor Balance rotor assembly motor Rapid G Bad contaminated grease section MES Misalignment in coupling or feet Realign motor per initial installation section Vibration in driven equipment Disconnect motor from driven equip ment See section on safety Run motor unconnected and check vibra tion If vibration drops dramatically then the driven equipment or align ment may be the cause of vibration Ambient Vibration Check base vibration level with motor stopped Vibration Rotor out of balance balance weights Balance rotor assembly Fine dust under coupling with rubber Realign couplings inspect couplings buffers or pins See initial installation section Bearing overheating Misalignment Realign unit See initial installation section Excessive end thrust Reduce thrust from driven machine Recheck alignment See initial installation section Too much grease in bearing Relieve bearing cavity of grease to level specified in lubrication section U S ELECTRICAL MOTORS INSTALLATION AND MAINTENANCE Troubleshooting TROUBLE POSSIBLE CAUSE CORRECTION Motor overheating Check with Overload Measure load compare with nameplate thermocouple or by resistance rating check for excessive friction in methods do not depend on hand motor or complete drive Reduce load or replace motor with
29. will restrict air flow and result in surface condensation Care must also be taken to protect the motor from flood damage or from any harmful chemical vapors C Whether indoors or out the area of storage should be free from excessive vibration which can cause bearing damage D Precautions should be taken to prevent rodents snakes birds or other small animals from nesting inside the motors In areas where they are prevalent precautions must also be taken to prevent insects such as mud dauber wasps from gaining access to the interior of the motor E Inspect the rust preventative coating on all external machined surfaces including shaft extensions If necessary recoat the surfaces with a rust preventative material such as Rust Veto No 342 manufactured by E F Houghton Co or an equivalent The condition of the coating should be checked periodically and surfaces recoated as needed F Toprevent moisture accumulation some form of heating must be utilized to prevent condensation This heating should maintain the winding temperature at a minimum of 5 C above ambient If space heaters are supplied they should be energized If none are available single phase or trickle heating may be utilized by energizing one phase of the motor winding with a low voltage Request the required voltage and transformer capacity from U S Electrical Motors A third option is to use an auxiliary heat source to keep the winding warm by either convection o
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