LOUIS ALLIS PACEMAKER MOTOR
Contents
1. not impose bending or twisting strains on the housing COPYRIGHT 1984 LOUIS ALLIS PRICES AND OTHER DATA SUBJECT TO CHANGE WITHOUT NOTICE Drip Proof Pacemaker 280 440 Frame When mounting we recommend the use of slotted shims as it may be necessary to remove or add shims when aligning shafts The use of proper shims inserted under each mounting foot will prevent distortion of the housing when the mounting bolts are secured The following procedure is recommended when mounting the motor 1 Add shims under the lowest mounting foot and tighten mounting foot bolt 2 Insert feeler gauges under the other mounting feet to determine amount of shims required 3 Insert required shims under each mounting foot and tighten mounting bolts 4 Use a small number of thick shims rather than a large number of thin shims 5 Measure the alignment INSTALLING COUPLING AND SHEAVES The flexible coupling or sheave should be heated in oil before installation and slid into position on the shaft or installed with a pushing device WARNING DO NOT DRIVE OR FORCE COUPLINGS OR SHEAVES ONTO THE SHAFT DAMAGE TO BEARINGS MAY RESULT REFER TO THE COUPLING MANUFACTURER S INSTRUCTIONS FOR THE PROPER INSTALLATION PROCEDURE LOUIS ALLIS Milwaukee Wisconsin 53201 2030050365 SERVICE MANUAL SECTION 16 Page 542 April 1984 Supersedes February 1981 ALIGNMENT Direct Connected ANGULAR MISALIGNMENT and RUN OUT between direct co2. Allis Sales Office For roller bearings 1800 RPM and below and in the absence For roller bearings refer to special lube instructions or of other instructions it is recommended that the above hours Louis Allis Sales Office be reduced to 1 3 listed values PRICES AND OTHER DATA SUBJECT LOUIS ALLIS TO CHANGE WITHOUT NOTICE Milwaukee Wisconsin 53201 2630050367 SERVICE MANUAL K SECTION 16 Page 514 April 1984 s Supersedes Aprii 1978 5 Drip Proof Pacemaker 140 250 Frame 1 Front Bearing Bracket 7 Stator 13 Back Bearing 2 Front Air Deflector 8 Screens 14 Back Bearing Lock Nut with Washer 3 Fan 9 Conduit Box 15 Shaft 4 Rotor 10 Lifting Lug Not Included 140 250 16 Back Bearing Bracket 5 Front Bearing 11 Back Bearing Bracket Bolt 17 Conduit Box Gasket 6 End Cover 12 Back Air Deflector 18 Housing NOTE Special motors such as flange mounted motors and or motors with special shafts may not follow the above parts list exactly However construction details will be similar to the above and parts lists are available upon request When ordering repair parts always give the serial number of the motor being serviced the part name and number and furnish complete nameplate data Drip Proof Pacemaker 280 440 Frame LOUIS ALLIS PRICES AND OTHER DATA SUBJECT Milwaukee Wisconsin 53201 TO CHANGE WITHOUT NOTICE 2030050368
3. e control circuit so that when the thermoguard is activated the power source to the motor will be disconnected Class I Group D units do not require thermostats OPERATION Alternating current motors shall operate successfully at rated load and frequency with voltages not more than 10 above or below nameplate ratings Motors shall operate successfully at rated load and voltage with frequency variations not more than 5 above or below the rated frequency Motors shall also operate successfully at rated loads with combined variations in voltage and frequency not more than 10 above or below the rated voltage and frequency provided the frequency variation does not exceeed 5 Motors operated with the above listed conditions are not necessarily in accordance with the guarantees for standard conditions REGREASING Lubrication for Motor With Grease Fittings Under normal operating conditions it is only necessary to regrease a ball bearing motor every two to six years depending upon the motor speed and operating conditions A sound greasing procedure should be followed when regreasing a motor for it has been deter mined that THE GREATEST CAUSE OF BEARING FAILURE IS OVER GREASING RATHER THAN UNDER GREASING PRICES AND OTHER DATA SUBJECT TO CHANGE WITHOUT NOTICE 2030050366 STRAIGHT EDGE SERVICE MANUAL SECTION 16 Page 543 April 1984 Supersedes February 1981 When regreasing the following steps should be followed Lubrication for Mo
4. eassemble motor RECOMMENDED BALL BEARING GREASES FOR NORMAL CONDITIONS It is recommended that these greases or their equivalents be used in Louis Allis motors NORMAL Ambient Temperature 20 F to 105 F HIGH Ambient Temperature 0 to 150 F Company Chevron Oil Co SRI No 2 SRI No 2 Shell Oil Co Dolium R Dolium R Shell Oil Co Darina No 2 Darina No 2 Texaco Premium RB Premium RB Texaco AFB No 2 AFB No 2 Mobil Mobilux No 2 Mobiltemp SHC 32 Mobil Mobilgrease 28 Mobilgrease 28 Gulf Oil Gulf Crown No 2 Gulf Crown No 2 Exxon Unirex N2 Unirex N2 NORMAL conditions are considered to include most ambient RECOMMENDED REGREASING atmospheres and operation requirements SEVERE condi SCHEDULE FOR BALL BEARINGS tions include the following Approximate Hours of Operation Motor Speed Normal Conditions Severe Conditions 1200 amp Below 6000 8000 3000 4000 Extreme dust dirt or other atmospheric contaminants Direct exposure to moisture beyond normal atmospheric humidity Shock vibration or other loading beyond rated 1800 3000 4000 1400 2000 Extremes of operation cycle such as long shutdown frequent starting or reversing 3600 1500 2000 750 1000 For lubrication recommendations covering above SEVERE conditions refer to special lube instructions furhished or consult nearest Louis
5. nnected shafts will cause increased bearing loads and vibration even when the connection is made by means of a flexible coupling To check for ANGULAR MISALIGNMENT clamp the dial indicator to one coupling hub and place the finger or button of the indicator against the finished face of the other hub as shown in the diagram below ANDICATOR BASE INDICATOR I COUPLING HUBS Checking for Angular Misalignment Rotate both shafts simultaneously keeping the indicator button at the reference mark on the coupling hub and note the reading on the indicator dial at each one quarter revolution ANGULAR MISALIGNMENT OF THE SHAFTS MUST NOT EXCEED A TOTAL INDICATOR READING OF 002 INCH FOR EACH INCH OF DIAMETER OF THE COUPLING HUB After the shafts have been checked for angular misalignment and are parallel within the limits specified in the preceding paragraph check the shaft for RUN OUT to assure concentricity of the shaft Clamp the indicator to one coupling hub and place the indicator button on the machined diameter of the other hub as shown in the diagram below INDICATOR BASE INDICATOR COUPLING HUBS Checking RUN OUT of Directly Connected Shafts Rotate both shafts simultaneously keeping the indicator button at the reference mark on the hub and note the reading on the indicator dial at each one quarter revolution TOTAL RUN OUT BETWEEN HUBS SHOULD NOT EXCEED 002 INCH ALIGNMENT Belted Aligning a belted drive i
6. s much simpler than aligning a direct coupling drive To check alignment place a straight edge across the faces of the driver and driven sheaves If properly aligned the straight edge will contact both sheave faces squarely The figure below shows the correct alignment of sheaves LOUIS ALLIS Mowauree Wisconsin 5320 Aligning Belted Drive TEMPERATURE The ambient temperature of the air surrounding the motor should not exceed 40 C or 104 F unless the motor has been especially designed for high ambient temperature applications The free flow of air around the motor should not be obstructed NEVER ATTEMPT TO MEASURE THE TEMPERATURE RISE OF A MOTOR BY HAND Temperature rise MUST be measured by thermometer resistance or by imbedded detector or thermocouple WIRING Before starting the motor check the nameplate to insure that the correct power supply voltage frequency and phase is being used and that the motor is connected according to the connection diagram on the nameplate Be sure that the motor is connected for the correct rotation Before connecting the driven machine energize the motor and check the rotation THERMOSTATS Standard Louis Allis Pacemaker motors are equipped with normally closed winding thermostats as required to comply with Under writers Laboratories regulations on motor surface temperature Ther mostats are located in the winding and the leads are marked X1 X2 The leads are to be connected in th
7. tor Without Grease Fittings Bearings are factory lubricated for normal life In the case of double 1 Clean the exteri r of the motor shielded bearing the grease provided is that which is in the bearing 2 Remove both the grease plug and relief plug if supplied When regreasing the following steps should be taken 3 If grease has hardened run a rod or wire a short distance into chamber to break grease In severe conditions run motor until bearing chamber becomes heated Remove fan guard Remove fan 1 2 3 Remove front and back cartridge bolts 4 Regrease motor with low pressure grease gun 4 Remove bearing brackets 5 For optimum operation the bearing chamber should be three 5 If original bearing is to be relubricated remove shield opposite quarters full of grease rotor Do not replace Flush old grease from bearing with suitable solvent Lubricate bearing and add additional grease to bearing 6 Operate motor for minimum of one hour chamber Chamber should be three quarters full of grease f Replace grease plugs 5a An alternate method is to replace old bearing with new double shield prelubricated bearing NOTE If the bearings are rough the motor should be disassembled and the bearings replaced Repack the bearings and bearing chamber 6 Bearing to be lubricated with recommended grease with enough grease so that the bearing chamber of the assembled motor will be approximately three quarters full 7 R
8. wr SERVICE MANUAL SECTION 16 Page 511 April 1984 Supersedes April 1978 LOUIS ALLIS AACEMAREA MOTOR GENERAL PURPOSE SQUIRREL CAGE MOTORS DRIP PROOF HORIZONTAL FRAMES 180 THROUGH 440 C317 Drip Proof Pacemaker 180 250 Frame RECEIPT OF SHIPMENT When your equipment arrives it should be checked immediately to see that all components have been received and that there is no evidence of damage in shipment In the event the complete assembly has not been received or arrives in a damaged condition you should without delay notify the carrier who handled the shipment and the nearest Louis Allis Sales Office STORAGE If the equipment is not put into immediate use it should be stored in a clean dry location For long periods of storage especially where moisture or dust is prevalent the equipment should be covered to protect it from corrosion LOCATION In selecting a location for the unit first consideration should be given to ventilation It should be far enough from walls or other objects to permit a free passage of air The motor should never be placed in a room with a hazardous process or where flammable gases or combustible material may be present unless it is specifically designed for this type of service MOUNTING The motor should be securely mounted on a bed plate base or platform that is rigid enough to prevent any vibration of the unit and also prevent transfer of vibration to the unit The base must
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