ML20100R418

Applicant Exhibit A-97,consisting of Instruction Manual B-3620-8 Concerning Installation,Operation & Care of Reliance Std Integral Horsepower Induction Motors

ML20100R418
Person / Time
Site:	Farley
Issue date:	02/13/1992
From:	ALABAMA POWER CO.
To:
References
CIVP-A-097, CIVP-A-97, NUDOCS 9204090073
Download: ML20100R418 (13)

Text

_ - - - - _ - - -

3 3 ygl 3 (s '/- D VA JUNE,1976

,2//,3/92 INSTRUCTION M AL B-3620-8 f

92 WR 13 P3 :08

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<.uwi geg.g ,wi INST A LL ATION, OPER ATION AND CARE OF RELIANCE STANDARD INTEGRAL HORSEPOWER INDUCTION MOTORS (180 449 FRAMES) l

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TABLE OF CONTENTS Page RECElVING AND HANDLING 4

Accep tance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 Storage..... ......... ............................... a 0034211 u n pac k i n g . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . a warranty. . . ........................................... a INSTALLATION inspection. . . . . . . . . . . ........... ..................... 4 tocation . . . . . . . . . . . . . ................................ 4 -

u tt ing u ee ns . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 uounting . . . . ... ........ ... .... .................. 4 Drive.............................................

Rotating Parts. .

4

. ........ ......................... 5 Wiring . . . . . . . . . . ............... ......... . .......... 5 Grounding . . . .

........ ..... . .................... 5 S t a rt i n g . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 Drain Plugs . . .

.... .. .... . . ... . ................. 5 R ota tion . . . . . . . . . . . . . . . . . . . . . ...... ............... 6 Tem pera tu re R ise . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6 Test For General Condition . . . . .......................... 6 initial Lubrication. . . . . . . .... ... ...... ............. 6 OPER ATION . . . . . . . . . ......... ....

.. ............. ........ 6 MAI NT EN ANCE . . . . . . . . . . . . . . . . . . ....................... 6 Disassembly . . . . . ..... .

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7 Removing Brackets and Rotor . . . . . . . ......................

7 Removing and Repla'cing B all Bearings , . . . . . . . . . . . . . . , . . . . . 7 Reassembly. . . . .. ......... ..

. .................. 7 INTRODUCTION LUB RICATION AND BEA RING . . . . . . . , . . . . . . . . . , . 7 s

LUBRICATION OF DOUBLE SHIELDED BALL BEARINGS . . . . . . .. . . ..8 Simplified M aintenance . , . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8 Suggested Lubrication Procedure , ,

......................... 9 LUBRICATION OF CYLINDRICAL AND SPHERICAL '

ROLLER BEARINGS ....., ...... .. ... .. ..................

9 How To Clean Roller Bearings . . . ... . . ................ 10 5

HIGH TEMPERATURE CONDITIONS AND LARGE BEARING OP E R ATI N G AT H I G H SP E E DS . , . . . . . . . . . . ........... . . . . . . . .S 10

' GREASE FOR ANTI FRICTION BEARINGS O F R E LI AN CE MOTO RS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .10 ....

PRECAUTIONS IN HANDLING Sleeve Bearings . ..... .... .. . ................ 11 REPLACEMENT BEARINGS . . . . . . . .. . ......... 11 1

.s n RECEIVING AND HANDLING 00M 212 ACCEPTANCE breathing at points other than through the bearing

/ Thoroughly inspect the equipment before accepting fits. Vertical position, motors should be stored in the vertical shipment from the transportation company, if any of the goods called fur in the bill of lading or express receipt are 5. All units equipped with heaters are to have the damaged or the quantity is short, do not cceept them until heaters connected if storage conditions in any way the freignt or express agent makes an appropriate notation simulate or approach atmospheric conditions ex.

perienced in operation, on your freight 5ill or express receipt. If any concealed loss or damage is discovered later, notify your freight or express

6. Windings to be megged at the time equipment is put agent at once and request him to make an inspection. We in storage, At the time of removal from storage, the will be very happy to assist you in collecCng claims for loss resistance rearfing must not have dropped more than or darnge in shipment; however, this willingness on our 50% from tt.e initial reading. Any drop below this part does not remove the transportation company's respon- point necessitates electrical or mechanical drying.

sibility in reimbursing you for collection of claims or re- Where a tarpe quantity of motors is stored, an inspec-tion or sampling should be made by removing the end pl&~ ' *aterial. Claims for loss or damage in ship.

r, t brackets and visually inspecting for the presence of

+ 4educted from the Reliance invoice, nor shou ~ s.: , Reliance invoice oe withheld await. water in the grease or rust on the bearing. If present, ng aWu < replace the bearings and relubricate,

, ch claims, as the carrier guarantees

, ' ' 7. All external parts and motors subjected to corrosion Umnge has been itcurred and the sit. should be protected by some corrosive resistant

" coating.

et the nearest Reliance District Office

/

• , case keep a wntten record of all 8. Where motors are not installed in the original con-v -

tainers, but are removed and mounted on other pieces of machinery, the mounting must be such that the drains and breathers are fully operable. In this respect, STORAGE - DUTY MASTER A C MOTORS the drains must be kept at the lowest point in the Storage requirements for motors under negotiated ex. motor and/or the drain plugs removed so that all tended warranty are insted below. When a negotiated condensation can automatically drain out. Vertical g

extended warranty is in effect, these extended storage motors should be stored in the vertical position.

requirements must be followed to allow the submission of 9. All other storage conditions apply, including rotation a valid warranty claim. of motor shafts. Where such conditions cannot be

1. The motors, if not mounted, are to be stored in the met, then the equipment must be treated the same as original containers in a clean, dry, protected if it were mounted in its normal position, and all

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warehouse. protective devices such as heaters, breathers, and '

2. The storage area is to be free from any vibration and drains fully operable.

from extremes in temperature.

3. Bearings

a. Ball & Roller (anti-friction) The bearings are to be fully gre ned at the time of going into extended After unpacking and inspection to see that all parts are storage. Motor shafts are to be rotated manually in good condition, tum the shaft by hand to be sure there every 6 months and additional grease added pur.

are no obstructions to free rotation. Equipment which has ging some of that in cavity. Grease in the beanngs been in storage for sometime should be tested and relubri-is to be purged at the time of removal from stor.

cated prior to being put into semice. Refer to " Test for age, making sure that an ample supply of fresh General Condition" and " Lubrication" for pro:edure to be grease is in each grease cavity.

performed after extended storage,

b. Sleeve toit lub) The bearings are tested using an Equipment with roller bearings is shipped with a shaft oil containing a rust inhibitor. Prior to shipment block at the opposite pulley end, in removing the shaft the oil is drained. If motor is stored more than block, be sure to eplace the bolts which are used to hold one month the oil reservoirs must be refilled to the the shaft block in place during shipment.

indicated level with the specified lubricant. (See instruction Manual) The shaft should be rotated by hand every month at least 10 to 15 revolutions WARRANTY s

to assure that an oil film is on the shaft and bearing surfaces.

4. All drains to be f ally operable while in storage, and/or The Reliance Electric Company warranu workmanship the drain plugs removed. The motors must be stored and materials on this motor for a period of one year from so that the drain is at the lowest point. All treathers date of shipment from the Reliance factory. In every case and autome'ic 'T" drains must be operable to allow conceming warranty, contact the nearest Reliance Sales Office or authorized Reliance Service Shop.

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INSTALLATION INSPECTION 0034213 After the motor is unpacked, examine the nameplate data to see that it agrees with the power circuit to which it not more than 10% above or below the nameplate data, or is to be connected. The motor is guaranteed to operate combined variation of voltage ary frequency of not more than 10% atxwe or below nameplate data. Efficiency, successfully with frequency not more than 5% and voltage power factor and current may vary from nameplate data.

TABLE 2. General Effect of Vattare sad Frequency Varieties en Induction meter Characteristics swteag (thasary power terser and ses hyets b e ehea spreas. , Feb men s de need g,,,,, ,,,,

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.e Docro.e lesass sman Decre s Deve.e Dame. Decness Demees 44 che, 30s Iis Decrease two.e Decrease lacree. home earnae h-! T 26 51$ 1630 1MG pone IM M 6 4*c 44s snes pone pe.m p.at pone acname stas soie,. . i=== ne 0=== i==.e i= hen, 0== Onc=. D.uen.

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tes si$t maght maght $$t slet is as ss. nee is .cne. ennese .aus. escne. .ne.e men.e shsh Oersense sie Cecn-e 4fs Detrum.

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We f warmen et hmenev . t s eaweasy (syncare speed she) I the

.ss=via be =v en kweats tene.e come. heressiv Decree e s.pne s.pht s&gt shght shght shget its lasness lagrene is es smanes is W esc =. -

2_  :-_ _ t--_ shone, laenese lems. leusage egney las shone, see, tof E N. re. ene. om rw st*ue. and -si sery senwemse ter spuune vet.gL LOCATION MOUNTING The motor should be installed in a locatic i 6xnpatible with the motor enclosure and specified ambient. Mount the motor on a foundation sufficiently rigid to LIFTING MEANS prevent excesswo vibration. Ball bearing motors may be mounted with the feet at any angle. After carefully align-WARNING - WHEN A LIFTING MEANS IS PROVIDED " "

FOR HANDLING THE MOTOR OR GENERATORe IT SHOULD NOT BE USED TO LIFT THE MOTOR OR DRIVE GENERATOR PLUS ADDITIONAL EQUIPMENT SUCH AS GEARS, PUMPS, COMPRESSORSe OR OTHER DRIVEN EQUIPMENT. In the case of assemblies on a '# " 8** "

common base, any lifting means provided on the motor or located on the shaft as close to the shaft shoulder as generator should not be used to lift the assembly and base ossible. Heat to install. Driving a unit on the shaft will but, rather, the assembly should be lifted by a sling around *

• base or by other lifting means provided on the base. In .

cses, care should be taken to assure lifting in the direc- Belt Drive

Align the pulleys so that the belt will run ' ~

tion intended in the design of the lifting means. Likewise, preccutions should be taken to prevent hazardous overloads true; tighten the belt just enough to prevent slippage, any due to deceleration, acceleration or shock forces. tighter will cause premature bearing failure, if possible, the lower side of the belt should be the driving side.

n INSTALLATION (Cont'd)

Chain Drive: Mount the sprocket on the shaft as close 0034214 i to the bracket as possible. Align the sprockets so that the Motors with resilient cushion rings are usually supplied chain will run true. Avoid excessive chain tension. with a bonding conductor across the resilient member (see MG 2-2.06L Some motors are supplied with the bonding l Gear Drive and Direct Connection: Accurate alignment conductor protect on the concealed side of the cushion ring to is very essential. Secure the motor and driven unit rigidly the bond from damage. Motors with bonded to the base. cushion rings should usually be grounded at the time of Installation in accordance with the above recommend ROTATING PARTS for making ground connections. When motors with bonded cushion rings are used in multimotor instattations empioy.

WARNING - ROTATING PARTS, SUCH AS COUPLINGS, "9 F"P fusing r gr up pr tection, the bonding of the PULLEYS EXTERNAL FANS, AND UNUSED SHAFT cushe n rm.g should be checked (see MG 2 2.06) to deter.

EXTENSIONS, SHOULD DE PERMANENTLY GUARD, mine that it is adequate for the rating of the branch circuit ED AGAINST ACCIDENTAL CONTACT WITH HANDS overcurrent protective device being used.

OR CLOTHING. THIS IS PARTICULARLY IMPORTANT There are applications where grounding the exterior parts WHERE THE PARTS HAVE SURFACE IRREGULAR.

of a motor or generator may result in greater hazard by in-ITIES SUCH AS KEYS, KEYWAYS OR SET SCREWS.

creasing the possibility of a person in the area simul.

SOME SATISFACTORY METHODS OF GUARDING taneously contacting ground and some other nearby live ARE:

electrical part of other ungrounded electrical equipment.

1. Covering the machine and associated rotating parts In portable equipment it is difficult to be sure that a with structural or decoratve parts of the dr.Nen or ositive ground connection is maintained as the equipment driving equipment, is moved, and providing a grounding conductor may lead to

2. Providing covers for the rotating parts. The openings a false sense of security, When careful consideration of the in or at the edges of such covers should rot be over hazards involved in a particular application indicate the 1/2 inch wide (3/4 inch if the rotating parts are more machine frames should not be grounded or when unusual than 4 inches from the opening) in the direction

• operating conditions dictate that a grounded frame cannot

-) usually above and to the side, from which contact is to be expected. In other directions where other be used, the installer should make sure the machine is per-manently and effectively insulated from ground. In those stationary parts, such as a sut> base provide partial installations where the machine frame is insulated from guarding, somewhat wider openings may be used. ground, it is recommended that appropriate waming labels Covers should be sufficiently rigid to maintain ade- or signs be placed on or in the area of the equipment by quate guarding in normal service, the installer.

WIRING STARTING Connect the motor to the power supply according to the WARNING - BEFORE STARTING MOTOR, REMOVE diagram on the motor nameplate. For most 230 and 460 ALL UNUSED SHAFT KEYS AND LOOSE ROTATING volt motors, nine leads are brought out from the stator PARTS TO PREVENT THEM FROM FLYING OFF.

windings to that the motor may be connected for either When starting the motor, check the following items:

230 or 460 volts.

1, The rotor should turn freely when disconnected GROUNDING * 'h' ' *d' WARNING - THE FRAMES AND OTHER METAL EX- 2. Driven machine should be unloaded when first starting ihe motor.

TERIORS OF MOTORS AND GENERATORS (EXCEPT FOR INSULATED PEDESTAL BEARINGS) USUALLY The motor should ruri smoothly with little noise. If the SHOULD BE GROUNDED TO LIMIT THElR POTENTI AL m t r sh uld fail to start and produces a decided hum, it TO GROUND IN THE EVENT OF ACCIDENTAL CON. maY be that the load is tou great for the motor or that it NECTION OR CONTACT BETWEEN LIVE ELECTRICAL. has been connected improperly. Shut down immediately PARTS AND THE METAL EXTERIORS. See the National and mvestigate for trouble.

Electrical Code, Article 430 for information on grounding of motors, Article 445 for grounding of generators, and DRAIN PLUGS Article 250 for general information on grounding. In making the ground connection, the installer should make P if motor is totally enclosed fan cooled or noa ventilated certain that there is a solid and permanent metallic con-it is recommended that condensation drain plugs be re-nection between the ground point, the motor or generator moved. These are located in the lower portion of the end-terminal housing. and the motor or generator frame. A shields. Totally enclosed farecooled "XT" motors are l common method of providing a ground is through a equipped with automatic drains which should be left in grounded metallic condutt system. place as received, f

-9 INSTAL.LATION (Cont'd) 0034215 ROTATION or has been subjected to adverse moisture conditions, it is best to check the insulation resistance of the stator winding To reverse the direction of totation, discont.ect from with a megohmeter.

pow:r source and interchange any two of the three line .

le:ds for three phase moton, for two phase four wire, inter, if the resistance is lower than one megohm the windings change the line leads on any one phase. For two phase three should be dried in one of the two following ways:

wire, interchange phase one and phase two line leads. 1, Bake in oven at temperatuees not exceeding 90aC.

us W insulation resistance becomes constant.

TEMPERATURE RISE

2. With rotor locked, apply low voltage and gradually increase current through windings until temperature Under normal operating conditions, with the motor measured with thermometer reaches 1940F, Do not applied in accordance with the nameplate rating, the exceed this temperature.

temperature rise will not exceed the proper limits. Always [

a use a thermometer to determine the heating of a motor. INITIAL LUBRICATION The hand is not reliable in determining whether or not the j motor is too hot.

Reliance motors are shipped from the factory with the bearings properly packed with grease and ready to operate.

TEST FOR GENERAL CONDITION where the unit has been subjected to extended storage (6 months or more) the bearings should be relubricated prior if the motor has been in storage for an extensive period to starting."

OPERATION Due to the inherent characteristics of insulating mater.

Stator troubles can usually be traced to one of the abnormally high temperatures shorten the operating following causes:

of electrical apparatus. The total temperature,not the t:mperature rise, should be the measure of safe operation. Wom bearings Operating single phase The class of insulation determines the maximum safe Moisture Poor insulation operating temperature. Agina of insulation occurs at an Overloading Oil and dirt cecelerated rate at abnormally high temperatures. A general rule for gauging the effect of excessive heat is that for each Dust and dirt are usuallv contributing factors. Some 100C, rise in temperature above the maximum limit for the forms of dust are highly conductive and contribute mater.

insulation, the life of the insulation is halved, ially to insulation breakdown. The effect of dust on the Unbalanced voltage or single-phase operation of poly- motor temperature through restriction of ventilation is a phase machines may cause excessive heating and ultimate principal reason for keeping the windings clean.

failure, it requires only a slight unbalance of voltage applied Squirrel cage rotors are rugged and,in general, give little to a polyphase motor to cause large unbalance currents and u nt symptom of a Mme rotor is lack of

- resultant overheating. M may cause a hug h m. W accom.

Periodic checks of phase voltage, frequency and power - panied by a growling noise or perhaps failure to start the ,

load.

consumption of a motor while in operation are recom- y mended; such checks assure the correctness of frequency . .

and voltage applied to the motor and yield an indication of rW armt. Such a condition can generally be detected the load offered by the apparatus which the motor drives. g m. o I caN Madng.

Comparisons of this data with previous no-load and full-load Rotating parts, such as couplings, pulleys, intemal-power thmands will give an indication of the performance ertemal fans and unused shaft extensions should be perm-of the complete machine. Any serious deviations should be investigated and corrected. anently guarded against accidental contact with hands or clothing.

MAINTENANCE The fundarnental principle of electrical maintenance is KEEPTHE APPARATUSCt.EAN AND DRY. This requires perioc.c inspection of the motor, the h . sency depending upon the type of motor and the service.

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MAINTENANCE (Cont'd) 0034216 The following should be checked at regular intervals:

3. Make end brackets rela 0ve to position on frame so 9 1. Windings should be dry and free of dust, grease, oil, they can be easily replaced.

and dirt. Windings may be cleaned by suction cleaners or by wiping. Nozzles on suction type cleaners should be non metallic. Gummy deposits of REMOVING BRACKETS AND ROTOR dirt and grease may be removed by using a com. 4. Remove bearing cartridge nuts or screws. (if used) mercially available low volatile solvent. WARNING -

5. Remove front end bracket bolts.

DO NOT USE GASOLINE OR OTHER INFLAM.

MABLE SOLVENTS. **

2. Terminal connections, assembly screws, bolts and 7. Remove back end bracket in same manner, nuts should be tight. They may loosen if motor is not securely bolted and tends to vibrate. B. Remove rotor,

3. checked Insulation resistance of motors in service should be 9 REMOVING %NMNOdN6hM%ERRINGS*~

periodically at approximately the same -mma 1 Dmce temperature and humidity conditions to determine %%MINGS)liQpI.UNODEREMO D a THEY possible deterioration of the insulation. When such ARE JOAEREPjsbOEDP WHEN REMOVAL IS NECES.

measurements at regular interva!s indicate a wide SARY,USE A BEARING PULLER. A BEARINGPULLER variation, the cause should be determined. Motor MAY BE RIGGED BY USING A METAL PLATE, W!TH should be reconditioned if the motor has been sub. HOLES DRILLED TO MATCH THE TAPPED HOLES IN jected to excessive moisture, or by re-winding or re. THE INNER CAP. USE CARE TO KEEP THE PRESSURE insulating if necessary. Enclosed motors require very EOUAL TO PREVENT BREAKING THE CAP.

little attention. Be sure that external air chamber of TO INSTALL A BEARING, HEAT THE BEARING IN AN fan <:ooled motors does not become clogged with OVEN AT 2500F. THIS WILL EXPAND THE INNER foreign material which will restrict passage of air. RACE, ALLOWING IT TO SLIP OVER THE BEARING SEAT, ALL BEARINGS MUST BE REPLACED WITH DISASSEMBLY THE IDENTICAL PART USED BY RELIANCE. IN s

MANY CASES SPECIAL BEARINGS ARE USED WHICH If it becomes necessary to disassemble the motor, care CANNOT BE IDENTIFIED BY MARKINGS ON BEARING.

should be taken not to damage the stator windings as the insulation may be injured by improper or rough handling. THE MAJORITY OF BEARINGS USED NOW HAVE A C3 Precautions to keep bearings clean should be exercised. INTERN AL LOOSENESS.

Before removing either end shield:

REASSEMBLY

1. Disconnect motor from power source. Tag the leads to insure proper reconnection. Follow reverse procedure as outlined for Disassembly.

Having marked the brackets in the original position,

2. Remove motor from mounting base, replace as marked.

INTRODUCTION 1.UBRICATION AND BEARING

. - - . _ - ~~ '

"The following instructions are for standard units only' ior special units and applications requiring different greases ings used by Reliance are carefully seiected by the bearing

$ manufacturer.

and regreasing schedules - contact the closest Reliance /

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monly used in the Reliance equipment ted below each:

Reliance designrprovide for mounting anti friction be.ar.

ings in rotating machines to afford (1) maximum protection Single Row, Double Shielded Ball Bearings to windings and interior of machines by prevention of e Series C, O and T. Frame A c. Motors grease leakage from bearing housing into machines, and (2) e Type "T", Super "T" and " RPM" Da:. Motors maximum protection to bearings against excess lubricant.

insufficient lubricant, dirt and moisture.

• Rotating V'S Drive Power Units Cylindrical Roller Bearings m in the machining of shafts and mounting parts. extreme f care is taken to insure proper fits. Cartridges are made of e Type "T" D c. Motors, Frame 1050 T and Larger, (Opposite Commutator End Only) ferro-silicon iron to reduce distortion a+ter machining.

• Super "T" D-c. Motors, Frame 500 A and Larger.

Various types of antbfriction bearings are used in the (Opposite Commutator End Only),

wide range of Reliance motors, as needed to meet specific load, speed and service requirements. All anti-friction bear. e D60 V*S and above . 3600 RPM.

-4 (Commutator End Only).

LUBRICATION OF DOUBLE-SHIELDED BALL BEARINGS 0034217 The user of Rehance motors with double-shielded ball

'4trings can continue whatever pneral practice he has es- the bearing shields, protects the bearing against the entry of foreign matter from the outside of the motor The use of sished for greasing ball bearir}g motors throughout his ant. the metering plate permits the use of a larDe' than normal grease reservoir to insure an adequate source of lubricant at Shielded bearings are not sealed bearings. With the all times. The metering plate provides the right lubrication shisided type of bearing as shown on the front page, and in atan On n  ;

cross-section below and at right, grease may readily enter the bearing, but dirt is restricted by the close fitting shields, Omings of the sealed design will not permit entry of i new grease.

Shielded bearings are pre lubricated as a rewtar manu-f:cturing procedure by the bearing supplier. h )

Thi housings, which serve as a lubricant reservoir, are hI '

i I h L, also filled with grease prior to shipment. By replating the y flow of grease into the bearing, the shields act to prevent # j 7 .

excessivs amounts from being forced into the bearing. A _ .

grease retaii.er labyrinth is designed to prevent grease from i g,, i j

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reaching the motor windings on the inner side of the bearing.

The cross sectional view of the end bracket, bearing and housing of a motoir with cap is shown in Fiwre 1.

Motors and generators, which include the NEMA stand-ardized frame sizes in a c. and d<., and two-bearing motor-I generator sets and V*S units are not provided with a drain plug. When grease is added and the housing becomes filled, t

~~i9 some grease will be forced into the bearing, and any surplus grease v>ill be squeezed out along the close clearance be-tween the shaft and the outer cap because the resistance of this path is less than the resistance presented by the bearing shields, metering plate, and the labyrinth seal.

Figure 2 is a cross sectional view of a double-shielded bearing without cap on a motor on which the automatic grease metering plate is used.

- The overall design of the shielded bearing and its mount-ing is effective in any position from horizrStal to vertical.

D AI..sh..W d 8.118.enas METERMATIC LUBRICATION lt is not necessuy to pack the housing next to the bear. O

• ing full of grease for proper bearing lubrication. It does g c'*== a=',=,,,

help, however, to prevent dirt and moisture from entering. g _.

Oil from this grease reservoir can and does, over a long

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p;riod, enter the bearing to revitalize the grease within the E ,

shi: Ids. Grease in the housing outside the shields, which are

'r stationary, is not agitated or chumed by the rotation of the ' /

2 bearings-consequently, it is less subject to oxidation. .

Furthermore, it foreign matter is present, the f act that the d grease in the chamb*r is not being chumed reduces the n _ _, _ _ q chanc2 of its contact with the bearing.

1 Lubricant from the grease reservoir is automatically tered to the waring by the metering plate. Grease in the ng outside the metering plate is not agitated or SIMPLIFIED MAINTENANCE u .ned, by the rotation of the bearing because of the bear.

ing shtids and the metering plate-consequently, it is less Properly lubricated, over greased, or under greased, the subject to oxidation. The metering plate, in addition to Reliance design provides the answer to securing longer bearing life.

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LUBRICATION OF DOUBLE-SHIELDED BALL BEARINGS (Cont'd)

The following procedure is for standard motor bearing initial supply in the housing, which was filled before installation and does NOT apply to any special motors with shipment.

4AQ0? standard lubrication _syste;m,_ o,r,,re7qu remeritp-~~

A. Double Shield Ball Bearings For most 1800 rpm, and slower speed applications, Reliance motors and generators may be grused in accord-

1. Pack (completely fill) the cavity in the side of the ance with established plant policy. In general, small motors, metering plate adjacent to the bearing after meter-frames 180A, through 286A, D3 through 030 V'S,3600 ing plate has been pressed into bracket but prior to rpm. power units, and 180 through 326 a-c. motors, on an assembly. Use necessary precautions to prevent eight. hour. day basis, operating at 00-500C., and under contaminating this grease before motor is assembled.

normal plant conditions are adequately lubricated. if greased twice a year.

2. After assembly, lubricate stationary motor until a full ring of g ease appears around the shaft at the Frequency of gressing is dependent upon such factors as relief opening in the bracket. s eed, temperature, size of bearing, load, and type of bear.

ing; e.g., ball bearing and cylindrical roller bearing.

B. Cylindrical Roller Bearings

1. Hand pack bearing before assembly. in general, the following equipmer't operating at temper.

2. Proceed as outlined in (1) and (2) for double stures of 00-500C.,under normal plant conditions, need to shielded ball bearings, be greased only 3 or 4 times a year: large ball bearing motors d<. motors, frames 364A through 406A, and a-c.

If under lubricated after installation, the double shielded motors, frames 364 through 445, operating at speeds of meteimatic bearing willlast longer than an open (non-shield-1800 rpm. and slower; D40 through D200 V*S 1800 rpm.

ed) bearing given the same treatment because of grease re. and 1200 rpm., 3 and 4 bearing power units; and D40 tained within the shields (plus grease remaining in the through D100 V'S,3600 rpm. power units. Under the same housing from its initial filling).

conditions the Super "T" d-c. motor roller bearing should if over-greased after installation, the double shielded be greased 6 or 8 times a year, metermatic twaring will operate satisfactorily without over.

When adding grease, use a product which conforms to heating because the excess grease is allowed to escape the requisites stated on page 4, and

[ ]) through the clearance between the shield and inner race, and the grease in the housing adjacent to the bearing as not Rm M M Mi@&

chumed, agitated and caused to overheat. An open bearing (2) Force grease through filling hole until grease under the same treatment may fail, appears at drain hole or elong shaft.

It is not necessary to disassemble motor's at the end of (3) Replace plug after motor has run for at least 2 Hrs.

fixed periods to grease bearings. Bearing shields do not require replacement. (4) Wipe away excess grease which has appeared at drain hole or along shaft.

Double-shielded ball bearings should not be flushed for cleanmg. If water and dirt are known to be present inside in greasing fan <ooled motors, grease the bearing at the -

the shields of a bearing t:ecause of a flood or other circum- end opposite the fan end first, forcing grease through filling stances, the bearing should be removed from service. All hole until grease appears along shaft. Note how much leading ball bearing manufacturers are providing recondi' greasa has been added, then in grossing the fan.end bearing, tioning service at a nominal cost when bearings are retumed add approximately two thirds of this amount.

to their f actories. C-Face, 0 Flange, and P. Base bracket type motors in addition to Explosion-Proof and Tschonite construction SUGGESTED 1.UBRICATION PROCEDURE m tors do not incorporate grease relief around the shaft.

Grease relief on these motors is through a relief fitting In For many applications, double 1hielded ball beerings will lubrFating these motors, grease shouid be added until it operate indefinitely without the additiori of grease to the begins to relieve out through any hole in the relief fitting.

O O

LUBRICATION OF CYLINDRICAL AND SPHERICAL  %

ROLLER BEARINGS B3 s=*

CO

( Sufficient grease to form a film over the rollers and races Motors as shipped from the factory have sufficient grease 1

of the bearing is allthat is required for perfect lubrication of roller bearings. to lubricate the bearings adequately for at least three months in normal applications. We recommend inspection Due to the friction of the grease, bearings may overheat of the bearings at the end of two or three months, to see if if packed full of some grades of grease.

it is necessary to add grease. Caution-whenever the bearing

q LUBRICATION OF CYLINDRICAL AND SPHERICAL ROLLER BEARINGS (Cont'd) 00342[9 "ousing is opened, keep bearing and grease absolutely free Figure 3 is a cut away view of the cylindrical ronier im dirt. .

tearing and housing in an a-c. motor.

As a practical matter, bearings should be lubricated at Spherical roller bearings must be lubricated on each side definite intervals. Study will be required to determine how since grease does not readily pass from one row of rolleri to frequently this should be done for any particular application.

the other, A c. motors using spherical roller bearings are provided with two filling holes having plugs or fittings.

l Generators and d<:. motors have one filling hole feeding both sides of the bearing to permit the lubricant to distri.

bute evenly over both sets of rollers. These bearings must be lubricated more frequently than ball bearings, and a low-

{ m consistency (high penetration) grease should be used.

• N_ h c , i.a.. .. i n .u. , s.... . sr..... i n.n., s..,.a s HOW TO CLEAN ROLLER BEARINGS , y

!as. - e When it is necessary to clean a non shielded bearing to -

maintain or restore operation (such as after motor has been flooded or the bearing exposed to dirt), wash out the bear- {r ing with clean carbon tetrachloride or gasoline until all .'4 foreign matter is removed. To prevent corrosion, the bear.

.a _me. i

' 'g should be given a final wash with light lubricating oil r -

T tore filling with new grease.

Cylindrical roller bearings,where used, are single row and the method of greasing is the same as for ball tiearings, ex.

,43 cept that they must be lubricated more frequently.

HIGH TEMPERATURE CONDITIONS AND LARGE BEARINGS OPERATING AT HIGH SPEEDS Bearings operating with actual grease temperatures of added slowly, preferably wim the motor running, and 800 900C., large bearings (size 315 and larger) used in results observed carefully, frames 1050-T and larger, and bearings operating at speeds Too much grease may cause overheating in high speed above 1800 rpm., need lubrication at more frequent inter-bearings which can result in bearing failure.

vals. These iarger bearings are usually found in a c frame sizes 504 and larger, and d-c. frames sizes 503A, Super 'T'* If the temperature in the grease reservoir rises to above and tbove, B00C. from a previously lower temperature, shut down the motor. By removing excess grease and allowing time for Suggested procedure is to add a small amount of grease cooling, the bearing should regain its normal clearance and about every 700 hours0.0081 days <br />0.194 hours <br />0.00116 weeks <br />2.6635e-4 months <br /> of operation. Grease should be operating temperature.

GREASE FOR ANTI-FRICTION BEARINGS OF REllANCE MOTORS There are a number of greases which are suitable as a ,

/

bricant for anti-friction bearings in electric motors. It is The user's own experience will undoubtedly determine the impossible to list all of the suitable greases in this instruction grease to M used msnual. Our experience has indicated that characteristics Use a grease which is neutral, non fibrous, with a high which are listed below are desirabie requisites for a lubricant.

meltmg point (3500F.), and with a minimum tendency to

( .

, l GREASE FOR ANTI-FRICTION BEARINGS OF RELIANCE MOTORS (Cont'd)

E- separate into oil and soap. The grease should have a very 0034220 American Oil Co. Rykon s2 slow oxidizing rate.

ARCO Litholine Industrial =2 BP Oil Co. CC-EP e2 in general, the lubricant used should have a melting Gulf Oil Co. Precision No. 2 point of at least 1000F, higher than the operating tempera- Humble Oil & Refining Co, Andok 260 ture to which it is subjected. Master Lubricants Co. Lubriko M.21 Mobil Oil Co. Mobilux 2 Shell Oil Co. Alvania No. 2

• The following greases are listed as having properties e Standard Oil of California Chevron S312 desirable for the proper lubrication of anti. friction bearings Sun Oil Co. Prestigo 42

' in Reliance motors. This list does not constitute an en- Texas Oil Co. Texaco AFB e2 dorsement of these products, e Reliance standardized grease.

d PRECAUTIONS IN HANDLING The most important single f actor in securing good service THESE OILS MAY BE USED from sleeve, ball and roller bearing motors is to keep dirt, dust and foreign particles out of the bearing. One bearing Mobil DTE Light or Heavy Medium manutacturer claims that 90 percent of all bearing failures are caused by dirt. Texaco Regal A or PC

1. Use only clean grease from clean containers, and Use Oil of the viscosity range indicated in the following handle so as to keep it clean, table:

2. Never open a bearing housing in a dusty atmosphere.

{ 3. Never open a bearing housing without first cleaning off all dirt from adjacent surfaces. Speed Range Recommended RMP Visc sity Range

4. Always protect an exposed bearing by a protective SSU @ 1000F cover (clean paper or lint free cloth).

1500 and below 250 350 1800 and over 100 200 Watch oil rings when first starting to see that they revolve.

SLEEVE BEARINGS Change oil every six months or more often under severe operation conditions.

Motors with sleeve bearings are shipped from the factory without oil. Fill the reservoirs to the center of the oillevel CONSTANT LEVEL OILER gauge (minimum) to 3/8 above center (maximum) with a good grade of turbine oil as recommended for electric When supplied, refer to instcactions accompanying the motor and generator use by a reputable oil manuf acturer. constant level oiler.

REPLACEMENT BEARINGS Your maintenance prograrn willnot be complete without including spa e bearings. It must be remembered that the All bearings used in Reliance motors are subject to exact bearing is a wearable component and therefore must event-specifications and tests necessary to satisfy performance re-ually be replace 1 To insure tbst you are able to maintain quirements. In this tr'anner,it is possible to duplicate your original operation, we recommend the purchase of spares directly from Reliance, present bearing. Markings on the bearing do not indicate complete specifications.

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0034221 r

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LIANC ELECTRIC COMPANY Fd. conent ouices.

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INSTRUCTION MANUAL B 3620-8

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