Bucket Elevator Safety - Martin Sprocket & Gear
Contents
1. Sprocket amp Gear Inc Conveyor Division 3600 McCart Street Fort Worth TX 76101 1038 817 258 3000 FAX 817 258 3173 www martinsprocket com ELEVATOR SAFETY INSTALLATION OPERATION MAINTENANCE INSTRUCTIONS CEMA Document SC 2004 01 WARNING AND SAFETY REMINDERS FOR SCREW DRAG AND BUCKET ELEVATOR CONVEYORS APPROVED FOR DISTRIBUTION BY THE SCREW CONVEYOR SECTION OF THE CONVEYOR EQUIPMENT MANUFACTURERS ASSOCIATION CEMA It is the responsibility of the contractor installer owner and user to install maintain and operate the conveyor components and conveyor assemblies in such a manner as to comply with the Williams Steiger Occupational Safety and Health Act and with all state and local laws and ordinances and the American National Standards Institute ANSI B20 1 Safety Code In order to avoid an unsafe or hazardous condition the assemblies or parts must be installed and operated in accordance with the following minimum provisions 1 Conveyors shall not be operated unless all covers and or guards for the conveyor and drive unit are in place If the conveyor is to be opened for inspection cleaning maintenance or observation the electric power to the motor driving the conveyor must be LOCKED OUT in such a manner that the conveyor cannot be restarted by anyone however remote from the area until conveyor cover or guards and drive guards have been properly replaced 22. There are many kinds of electrical devices for interlocking of conveyors and conveyor systems such that if one conveyor in a system or process is stopped other equipment feeding it or following it can also be automatically stopped Electrical controls machinery guards railings walkways arrangement of installation training of personnel etc are necessary ingredients for a safe working place It is the responsibility of the contractor installer owner and user to supplement the materials and services furnished with these necessary items to make the conveyor installation comply with the law and accepted standards Conveyor inlet and discharge openings are designed to connect to other equipment or machinery so that the flow of material into and out of the conveyor is completely enclosed One or more warning labels should be visible on conveyor housings conveyor covers and elevator housings If the labels attached to the equipment become illegible please order replacement warning labels from the OEM or CEMA The Conveyor Equipment Manufacturers Association CEMA has produced an audio visual presentation entitled Safe Operation of Screw Conveyors Drag Conveyors and Bucket Elevators CEMA encourages acquisition and use of this source of safety information to supplement your safety program SEE OTHER SIDE FOR SAFETY LABELS NOTICE This document is provided by CEMA as a service to the industry in the interest of
3. Discharge Bibb Q Check adjustable discharge bib for wear after a month of operation and replace discharge bibb if worn Inspect discharge bibb on a regular basis Sprockets Traction Wheels Q Check sprockets and traction wheels for excessive uneven or unusual wear Replace sprockets or traction wheels if worn On segmental sprockets check and re torque bolts on the replacement Segments on both the head and boot shafts Chain Belt Q Check the take up for bucket clearance in the bottom of the boot housing To add clearance remove 1 two link section as required Q Inspect chain belt regularly Consult manufacturer for wear guidelines Important Correct all deficiencies before continuing restarting operation of any machinery Caution Practice good housekeeping and use proper LOCK OUT TAG OUT ALL POWER procedures Keep the areas around loading discharge drive and control points clean and free from obstructions to maintain a Safe environment for all personnel Operation PROBLEM POSSIBLE CAUSE Elevator Vibrates Foreign matter in boot Excessively tight chain belt Excessively loose chain belt Loose or broken buckets Buckets hitting bibb plate Misaligned elevator head and boot shaft Elevator is not adequately braced See para F installation oO N O WL N Chain belt hitting inside of casing when casing is not plumb Elevator Will Not Start Obstruction in boot Elec
4. can be angle iron channels keystock material etc NOTES Belt Type AA If elevator is equipped with gravity take up use a come along or other means to raise take up box to the upper most position when splicing the belt Add weight concrete or steel stampings to weight box as required for smooth operation Weight must be uniformly distrib uted in weight box and sufficient to remove slack from belt BB During normal operations avoid starting and stopping any elevator when loaded with material CC If elevator components are to be stored at the job site for a period of time prior to erection insure that components are pro tected from the elements It is not advisable to cover elevator components tightly with polyethylene Condensation will collect and cause corrosion to elevator components and possibly premature motor failure due to moisture in the windings DD If elevator is to be erected but not used for a long period of time it is least one hour per week DRIVES All Types If drive is not factory assembled install at this time 1 Gearmotor Drive Mount driven sprocket securely to head shaft Fill reducer with proper lubricant and install driver sprocket Recommended oil is generally indicated on the reducer name tags Set reducer in position and line up drive sprockets Shorten center distance by adjusting movable base Install chain and connecting links Adjust slide base to a point where some sag is noted on the bot
5. 8 3000 FAX 817 258 3333 Sales and Manufacturing Danielsville PA 3376 Delps Road 18038 PO Box 267 Danielsville PA 18038 0267 610 837 1841 FAX 610 837 7337 Ft Worth TX Conveyor amp Tool Divisions 3600 McCart Ave Ft Worth TX 76110 4692 817 258 3000 FAX 817 258 3173 Montpelier OH 350 S Airport Road Montpelier OH 43543 9329 419 485 5515 FAX 419 485 3565 Sacramento CA 1199 Vine Street Sacramento CA 95814 0426 916 441 7172 FAX 916 441 4600 Scotidale GA 3303 Church Street 30079 1395 PO Box 886 Scottdale GA 30079 0886 404 292 8744 FAX 404 292 7771 Mini Manufacturing Centers Boston MA 357 Fortune Boulevard Milford MA 01757 508 634 3990 FAX 508 634 3998 Charlotte NC Charlotte NC 28208 3539 704 394 9111 FAX 704 394 9122 Chicago IL 1505 Birchwood Avenue Des Plaines IL 60018 3001 847 298 8844 FAX 847 298 2967 Denver CO 10800 East 54th Avenue Denver CO 80239 303 371 8466 FAX 303 371 7116 Detroit MI 12555 Belden Ct Livonia MI 48150 734 367 0238 FAX 734 367 0547 Houston TX 9910 Bent Oak Drive Houston TX 77040 713 849 4330 FAX 713 849 4807 Kansas City MO 1520 N Commerce Avenue Kansas City MO 64120 4961 816 231 5575 FAX 816 231 1959 Los Angeles CA 5920 S Triangle Drive Commerce CA 90040 3639 323 728 8117 FAX 323 722 7526 Minneapolis MN 10601 Hampshire Avenue South Bloomington MN 55438 2395 952 829 0623 FAX 952 944 9385
6. CT 800 275 5416 COOPER 75 460 0925 Fax 5 464 3067 MISCELLANOUS SUPPLIER EQUIPMENT PHONE NUMBER ALT CONTACT MILTRONICS MOTION SENSOR 817 277 3543 www milltronics com ALAN BRADLEY MOTION SENSOR 414 382 2000 Fax 414 382 4444 CONTROL CONCEPTS MOTION SENSOR 800 745 6551 Fax 860 928 9450 ELECTRO SENSORS MOTION SENSOR 800 328 6170 www electrosensors com ALLEN AIR AIR CYLINDERS 516 747 5450 Fax 516 747 5481 If you cannot find the information required with the above listing of contacts please contact your local n service center Recommended Spares The list of components provided below is our recommendation for spares required for general mainte nance Please use the enclosed bill of materials from the drawings or planning sheets to identify compo nents specific to your equipment Quantities should be equal to the previous amount given unless specified otherwise BUCKET ELEVATOR Bearings V belts Buckets Chain Belt Bolts Please call 7 if you need additional information or help in determining your required spares Bolt Torque General Bolt Tightening Torque Thread SAE Grade 2 SAE Grade 5 SAE Grade 8 ats 75 Yield Strength PSI 43000 75 Yield Strength PSI 69000 75 Yield Strength PSI 98000 Plt Zinc Plated Plain Zinc Plated Plated 7 16 24 1 2 13 1 2 20 3 4 16 0 3730 221 322 354 The reason all applications should be evaluated to determ
7. If the conveyor must have an open housing as a condition of its use and application the entire conveyor is then to be guarded by a railing or fence in accordance with ANSI standard B20 1 Request current edition and addenda 3 Feed openings for shovel front loaders or other manual or mechanical equipment shall be constructed in such a way that the conveyor opening is covered by a grating If the nature of the material is such that a grating cannot be used then the exposed section of the conveyor is to be guarded by a railing or fence and there shall be a warning sign posted 4 Do not attempt any maintenance or repairs of the conveyor until power has been LOCKED OUT 5 Always operate conveyor in accordance with these instructions and those contained on the caution labels affixed to the equipment 6 Do not place hands feet or any part of your body in the conveyor 7 Never walk on conveyor covers grating or guards 8 Do not use conveyor for any purpose other than that for which it was intended 9 Do not poke or prod material into the conveyor with a bar or stick inserted through the openings 10 Keep area around conveyor drive and control station free of debris and obstacles 11 Eliminate all sources of stored energy materials or devices that could Cause conveyor components to move without power applied before opening the conveyor 12 Do not attempt to clear a jammed conveyor until power has been L
8. MA SAFETY LABELS HELP MAKE YOUR CONVEYING EQUIPMENT OPERATIONS SAFER Do not enter Hazardous Area Authorized personnel only CHR930006 CHR930011 CHR930006 CHR930011 5 Wide x 2 1 2 High 5 Wide x 2 1 2 High CHR930007 DANGER Moving parts will cause severe injury Exposed screw and moving parts can cause severe injury Exposed moving parts can cause severe injury LOCK OUT POWER before removing cover or servicing LOCK OUT POWER before removing guard KEEP AWAY CHR930001 CHS950017 CHS950017 5 Wipe x 2 1 2 Hich y HOT SURFACE CHR930001 CHS930001 5 Wide x 2 1 2 High Equipment starts automatically can cause severe injury Exposed moving parts can cause severe injury Low Clearance Contact with skin may cause burns Be Alert LOCKOUT POWER DO NOT TOUCH before servicing KEEP AWAY CHS950018 CHS950013 CHS950013 5 Wide x 2 1 2 High CHR930002 CHS950018 CHR930002 5 Wide x 2 1 2 High 5 Wide x 2 1 2 High UWL es 2 Hazardous voltage Trip Hazard will cause severe injury or death e Be Alert LOCK OUT POWER before servicing gt CHR930003 CHR930007 5 Wide x 2 1 2 High Exposed moving parts can cause severe injury Hazardous noise level Ear protection required in this area LOCK OUT POWER before servicing CHR930008 CHS950014 CHS950014 5 Wide x 2 1 2 High CHS950021 CH
9. OCKED OUT 13 Do not attempt field modification of conveyor or components 14 Conveyors are not normally manufactured or designed to handle materials that are hazardous to personnel These materials which are hazardous include those that are explosive flammable toxic or otherwise dangerous to personnel Conveyors may be designed to handle these materials Conveyors are not manufactured or designed to comply with local state or federal codes for unfired pressure vessels If hazardous materials are to be conveyed or if the conveyor is to be subjected to internal or external pressure manufacturer should be consulted prior to any modifications CEMA insists that disconnecting and locking out the power to the motor driving the unit provides the only real protection against injury Secondary safety devices are available however the decision as to their need and the type required must be made by the owner assembler as we have no information regarding plant wiring plant environment the interlocking of the screw conveyor with other equipment extent of plant automation etc Other devices should not be used as a substitute for locking out the power prior to removing guards or covers We caution that use of the secondary devices may cause employees to develop a false sense of security and fail to lock out power before removing covers or guards This could result in a serious injury should the secondary device fail or malfunction
10. Portland OR 3030 N W Industrial Portland OR 97210 1734 503 223 7261 FAX 503 221 0203 Tampa FL 3201 Queen Palm Drive Tampa FL 33619 813 623 1705 FAX 813 626 8953 7 High Point Drive Wayne NJ 07470 7432 973 633 5700 FAX 973 633 7196 Manufacturing Only Abilene TX Clarksville TX Dallas TX Mansfield TX Paragould AR Includes the Plastics Div CANADA Sales and Manufacturing 70 Sprocket amp Gear Canada Inc 896 Meyerside Drive Mississauga Ontario Canada L5T 1R9 905 670 1991 FAX 905 670 2110 Sprocket amp Gear Canada Inc Conveyor Division 1030 Industrial Road Ayr Ontario Canada NOB 1EO 519 621 0546 FAX 519 621 4413 MEXICO sales and Manufacturing Sprocket amp Gear de Mexico S A de C V Km 52 Carretera Naucalpan Toluca Calle 3 Manzana VII Lote 11 Parque Industrial Toluca 2000 Toluca Edo de M xico 50200 52 722 276 0800 Fax 52 722 276 0801 Sprocket amp Gear de Mexico Av Industrial No 100 Lote 6 y 7 Manzana 11 Parque Industrial La Silla Apodaca Apodaca N L 66600 Monterrey 52 811 156 6830 FAX 52 811 156 6833 Malin SPROCKET amp GEAR INC 3100 SPROCKET DR ARLINGTON TX 76015 817 258 3000 For more information contact your nearest Distributor or Service Center COPYRIGHT 2007 e SPROCKET amp GEAR INC ALL RIGHTS RESERVED 176 MHS BE 0107
11. S950021 5 Wide x 2 1 2 High CHR930008 5 Wide x 2 1 2 High CHR930003 5 Wide x 2 1 2 High amp DANGER Climbing sitting walking or riding on conveyor at any time will cause severe injury or death QES CHR930004 4 3 CHR930004 5 Wipe x 2 1 2 injury 4 CHR931005 KEEP AWAY CHR931005 5 Wide x 2 1 2 High Moving equipment can cause severe 4 Guard Removed Servicing moving or energized equipment can cause severe injury LOCK OUT POWER cHR930009 MLALE AT CHR930009 5 Wide x 2 1 2 High Exposed conveyors Hazardous environment Respiratory protection required Servicing while pressurized can cause severe injury LOC K OUT source and and moving parts can cause severe injury LOCK OUT POWER before removing CHRo30010 LaTe CHR930010 5 Wide x 2 1 2 High Risk of severe injury DO NOT OPERATE Without guard CHR000025 CHR000025 5 Wide x 2 1 2 High Authorized personnel only CHS950015 5 Wide x 2 1 2 High CHS950015 Servicing while pressurized can cause severe injury LOC K OUT source and RELIEVE PRESSURE before servicing CHS950016 CHS950016 5 Wide x 2 1 2 High Walking or standing on conveyor covers or gratings can cause severe injury RELIEVE PRESSURE 5992 AV LaTe CHS950022 5 Wide x 2 1 2 High Rotating shaft can cause severe injury Keep ha
12. chor bolts not elsewhere along flange Any gap resulting from shimming is generally sealed with a strong structural grout It is essential that the boot be set accurately Check drawings to determine correct sequence of erecting intermediate casing Caulk or gasketing if provided should be placed between all casing flanges to provide dust tight sealing E Normally the erection crew should build a lifting bracket to avoid distortion to fabricated assemblies F Each and every intermediate section must be level and plumb It is common to find minor deviations in these types of fabricat ed assemblies Most often they can be corrected by rotating 180 or turning end for end If this does not solve an out of level or out of plumb condition it will be necessary to use metal shims and caulk the resulting gap When a gap occurs in a corner of the casing metal shims should be used and should extend a minimum of six inches in both directions Insure that shims do not project inside of casing Each intermediate section must be plumbed to less than 1 8 deviation before proceeding to the next section Casings must be braced or anchored to a rigid structure every 20 ft and not more than 4 ft below the head section If a rigid structure is not available guy wires may be used with the same spacing G After all intermediate sections are correctly placed remove the front and back sections of the hood and set the lower head using the same procedures as
13. ine the optimum tightening torque is that the factor in this formula is always an estimate The most commonly used bolting K factors arc 0 20 for plain finished bolts 0 22 for zinc plated bolts and 0 10 for waxed or highly lubricated bolts sf _ 3 7 _ _ e 3 _ _ 6 _ _8 2 m 129 E 14 202 317 0 8 n _ _ _ 4 gt 1 o _ 126 197 3a 6 a _ _ 4a 5 4 8 _ 8 _ _ 8 o e 17 _ 4 167 184 188 205 _ 231 24 _ 261 27 409 40 Formula T K x D x P e Target tighten torque the result of this formula is in inch pounds dividing by 12 yields foot pounds eK Coefficient of friction nut factor always an estimation in this formula eD Bolts nominal diameter in inches e P 80 5 desired tensile load in pounds generally 75 of yield strength P lbs 75 Yield strength Tensile Stress Area Our operation in Arlington Product availability rests on keeping fin conveyor ippon the 50 Texas serves as backup inventory for our ished inventory ready for quick delivery distributors service Centers throughout North America anywhere in the nation US A 3901 Scott Futrell Drive Wayne NJ General Offices Sales and Manufacturing Arlington TX 3100 Sprocket Drive 76015 2898 PO Box 91588 Arlington Texas 76015 0088 817 25
14. ir and loose clothing away CHR951023 5 Wide x 2 1 2 High Operating conveyor without lineshaft guard can cause severe injury KEEP GUARD IN PLACE STAY OFF CHS991026 CHR050027 5 Wide x 2 1 2 High 5 Wide x 2 1 2 High iY CVS930010 Exposed conveyors and moving parts can cause severe injury LOCK OUT POWER before removing CVS930012 Exposed buckets and moving parts can cause severe injury LOCK OUT POWER before removing cover or servicing arfi Exposed screw and moving parts can cause severe injury LOCK OUT POWER before removing cover or servicing CVS930011 S CVR940019 CVS950020 Hazardous Condition Exposed moving parts can cause severe injury Entry will result in severe injury or death LOCK OUT POWER before removing guard LOCK OUT POWER AND BLOCK HOIST before servicing CVS930010 3 Wide x 6 High CVS930012 3 Wide x 6 High CVS930011 3 Wide x 6 High CVS950020 3 Wide x 6 High CVR940019 3 Wide x 6 High As Of August 1 2005 CVR950024 Risk of Electrical Shock More than one disconnect switch may be required to de energize the equipment before servicing CVR950024 3 Wide x 6 High Installation 1 Boot Assembly Inlet Spout Removable Sprocket Pulley Access Door 2 3 4 Curved Boot Plate 5 Intermediate Section Access Doors Maybe Loca
15. l to experience some pulsation Characteristics of the material will affect the degree of pulsation Pulsation is caused by the difference in bucket projection Primary to satisfactory elevator operation is uniform material feed rates not surge loading and excessive boot flooding Regular inspection and maintenance will insure uninterrupted and satisfactory elevator performance When consulting the factory regarding a specific elevator refer to the purchase order number year of manufacture if known and equipment number if appropriate Maintenance Periodic inspections must be performed to determine the wear rate of all chains buckets belts and bearings During these inspections the alignment of sprockets pulleys and all drive components shall be checked Retightening of fasteners and checks to insure guards covers gratings controls and safety devices are in place secure and operating correctly Keep a good supply of spare parts When ordering refer to our Service Manual and furnish the part identification as well as Original order number WARNING Removal of backstop may cause unexpected machinery movement as indicated by note 17 of Safety If backstop is installed as part of shaft mount reducer removal of torque arm may also cause unexpected machinery movement Maintenance Checklist Buckets L Check buckets periodically for bucket damage and loose bolts All damaged buckets should be replaced or properly repaired
16. o not substitute for a thorough in plant safety training program centered on the hazards CVS930011 Exposed screw and moving parts can cause severe injury associated with operating your installed equipment Contact CEMA or Your Equipment Manufacturer for LOCK OUT POWER Replacement Labels before removing cover or servicing CONVEYOR EQUIPMENT MANUFACTURERS ASSOCIATION 6724 Lone Oak Blvd Naples Florida 34109 239 514 3441 CEMA Safety Labels Placement Guidelines Product Screw Conveyors Equipment Bucket Conveyor A WARNING To be placed on re movable guards to ne Exposed moving parts can cause warn that operation severe injury of the machinery OUT POWER with guards removed before removing would expose chains belts gears shafts pulleys cou plings etc which create hazards USE LABEL A ON BELT GUARD USE LABEL B ON EACH SIDE OF INTAKE ALL BOLTED PANELS AND INSPECTION DOORS AND BOTH SIDES OF SPLIT HOOD NEAR SIDE FAR SIDE L all To be placed on intakes bolted guards panels hoods and doors of bucket conveyors to provide warn ing against ex posing buck ets and mov ing parts while in Operation CVS930012 Exposed buckets and moving parts can cause severe injury LOCK OUT POWER before removing cover or servicing ee F ee ee SC 4 THESE CE
17. op a plumb line from head end pulley to boot pulley Insure that pulleys are centered in casing and are exactly in line with each other Check to insure that the pulley set screws are tight Pulleys should be in line when viewed from the narrow side of the casing Head and boot shafts are generally offset when viewed from the wide dimension of the casing Check factory drawings for offset Installation JB Move boot take up to its uppermost position head end take up to lowest position Make these adjustments uniformly to both sides at the same time Many bearings will not accommodate much misalignment Severe damage to internal bearing parts and seals can occur if this procedure is not followed KB It is recommended especially in cool environments that the belt be draped over the head pulley and allowed to hang for at least 24 hours This will relieve stresses resulting from being rolled up and tend to achieve initial stretch common to belting ATTACHING BUCKETS TO ELEVATOR BELTS PROPER IMPROPER SPACER WASHER OPTIONAL BELT 7 BUCKET 7 FLAT WASHER WITH PLASTIC BUCKETS If rubber covered belt with unequal thickness covers is used the thicker cover should be installed on the pulley side FLOW 1 2 Diameter 7 4 Lon Grade 5 Bolt Anti Self Locking Nut PVC or gt Rubber Belt LAP JOINT BUTT JOINT CLAMP SPLICE LB Select the type of splice to be used from illustrations above MB Clamp belt se
18. oupling the chain together Add weight concrete or steel stampings to weigh box as required for smooth operation Weight must be uniformly distrib uted in weight box Boot sprockets will fully engage the chain however insure that upward movement is available to accommodate chordal action of chain Usually 2 to 3 inches is adequate When installing double strand chain elevators be sure to lay out chains and verify equal lengths of parallel strands Double strand chains are usually matched and tagged left and right On double strand elevators one boot sprocket is keyed to the shaft the other sprocket floats between shaft collars Insure that these collars are tight Check shaft collars frequently for tightness After all plumbing and other adjustments are made it may be necessary to drill a set screw indent into boot shaft to hold shaft collar position DD During normal operations avoid starting and stopping any elevator when loaded with material EE If elevator components are to be stored at the job site for some time prior to erection insure that components are protected from elements It is not advisable to cover elevator components tightly with polyethylene Condensation will collect and cause corrosion and premature motor failure FF If elevator is to be erected but not used for a long period of time it is advisable to run the elevator at least one hour per week MACHINERY Belt Type IB Remove boot pulley access door Dr
19. promoting safety It is advisory only and it is not a substitute for a thorough safety program Users should consult with qualified engineers and other safety professionals CEMA makes no representations or warranties either expressed or implied and the users of this document assume full responsibility for the safe design and operation of equipment CEMA Document SC 2004 01 CEMA Safety Labels The CEMA safety labels shown below should be used on screw conveyors drag conveyors and bucket elevators Safety labels should be placed on inlets discharges troughs covers inspection doors amp drive guards See CEMA Safety Label Placement Guidelines on CEMA Web Site http www cemanet org safety guidelines html CHR930001 CHS991026 Exposed moving parts can cause severe injury LOCK OUT POWER before removing guard Walking or standing on conveyor covers or gratings can cause severe injury STAY OFF iY CVS930010 Exposed conveyors and moving parts can cause severe injury LOCK OUT POWER CVS930012 Exposed buckets and moving parts can cause severe injury LOCK OUT POWER before removing before removing PR cover or servicing Exposed screw and cover or servicing moving parts can cause severe injury LOCK OUT POWER before removing cover or servicing PROMINENTLY DISPLAY THESE SAFETY LABELS ON INSTALLED EQUIPMENT SEE OTHER SIDE FOR SAFETY REMINDERS Note Labels alone d
20. re that the widest part of the side bar open end points in the direction of chain travel Use care not to get a side twist in the chain during handling LC It may be necessary to remove up to several links of chain during initial installation Installation MC Adjust take up accordingly to provide 1 8 to 1 4 gap between the chain barrel and root of boot sprocket tooth This gap should NC OC PC QC occur at 6 o clock on the boot sprocket The gap is to accommodate chordal action of the chain On long pitch chain this gap can be increased accordingly Adjust bibb to provide up to 3 4 to 1 clearance to buckets At this point you may find it desirable to run in the chain for a period of several hours Install buckets using bolts nuts and lock washers provided It is a good idea to peen the bolt threads after the buckets are securely in place lf plastic buckets are being installed use care to avoid over tightening Steel backups may be required Adjust bibb to provide 3 4 to 1 clearance to buckets Install upper hood front and back sections After satisfactory alignment and trial operation weld stops at each end of head shaft pillow blocks to prevent bearing move ment Stops may be of angle iron channels key stock etc NOTES Chain Type AA BB CC lf elevator is equipped with gravity type take up use a come along or other means to raise takeup box to the upper most por tion when c
21. several short jogs gradually lengthening in duration without material Check take up adjustment after 8 hours Retighten all fasteners Check and realign sprockets pulleys as necessary Gradually begin feeding material to the elevator Increase feed rate slowly until reaching design capacity Empty elevator LOCK OUT TAG OUT ALL POWER Check for loose fasteners Check alignment of sprockets pulleys Elevator should be checked for loose fasteners and alignment at least once a month OPERATION Chain Type When elevator is new it is common to have an occasional tight chain joint This will cause some vibration but will eventually loosen If plastic buckets are used in conjunction with metal breaker buckets it is normal to experience some pulsation Characteristics of the material will affect the degree of pulsation Pulsation is caused by the difference in bucket projection Do not intermix old chain and new chain in parallel strands Always order matched lengths Primary to satisfactory elevator operation is uniform material feed rates not surge loading and excessive boot flooding When consulting the factory regarding a specific elevator refer to the purchase order number year of manufacture if known and equipment number if appropriate Regular inspection and maintenance will insure uninterrupted and satisfactory elevator performance OPERATION Belt Type If plastic buckets are used in conjunction with metal breaker buckets it is norma
22. ted At Any Convenient Position 6 Plain Intermediate Section 7 Plain Intermediate Section Usually the Odd Length Located Under Lower Head Assembly 8 Lower Head Assembly 9 Back Section of Hood 10 Front Section Of Hood 11 Discharge Spout 12 Adjustable Bibb 13 Discharge Spout Liner Optional item 14 Elevator Chain or Belt 15 Elevator Buckets 16 Boot Take up 17 Head Shaft Pillow Blocks 18 Pillow Block Stops Optional NOTE It is the purchaser s responsibility to provide a suitable foundation and bolts to receive the elevator RECEIVING It is important to carefully examine incoming shipments for condi tion and completeness Shortages and damage must be reported immediately to the transportation company DO NOT ATTEMPT TO INSTALL A DAMAGED ELEVATOR OR COMPONENTS Normally head and boot sections are factory assembled and include sprockets or pulleys take ups pillow blocks etc Chain or belt buckets gaskets nuts and bolts special fittings etc are usually shipped in separate containers or on pallets skids Intermediate casings are shipped separately Installation CASING All Elevators A Insure that anchor bolts are securely placed and conform to the pattern of the boot section mounting holes B Set boot in place insuring that boot section top flange is level and casing is plumb This is accomplished by shimming under the bottom flange Use shims only next to an
23. tom strand of chain when the top strand is tight Lock base of reducer into position Check all mounting bolts for tightness Install chain guard and add lubricant if oil bath guard is furnished If possible rotate gearmotor by hand to determine whether the back stop is correctly installed See reducer manufacturers instructions for additional details Other types of backstops are frequently used See manufacturers instructions 2 Shaft Mounted Gear Reducers Assemble back stop to reducer See manufacturers instructions Assemble reducer to head shaft using bushings and keys if provided Installation 3 Backstop Torque Arms Removal of backstops or torque arms may cause unexpected machine movement Remove or block all external loads before servicing the unit Failure to observe these precautions could result in bodily injury Bolt motor in place and install driver and driven sheaves Check for alignment Attach turnbuckle and turnbuckle mounting bracket Install V belts tighten turnbuckle and lock in place with lock nuts Add oil to reducer Recommended oil is generally indicated on the reducer name tag Install V belt drive guard Connect electric motor eration START UP All Types Check to insure elevator is free of foreign materials before connecting power Check to insure all guards covers safety devices and controls are in place and operating correctly Initial start up of elevator should commence with
24. trical problem Backstop incorrectly installed Broken V Belts or drive chains Reducer failure Boot excessively plugged with material N OO OF Aa W N Excessively tight chain belt Pillow Blocks Get Hot Over lubrication Under lubrication Excessive chain belt tension Misalignment of head shaft pillow blocks WwW N Misalignment between head and boot shaft Elevator Not Discharging Properly Speed incorrect consult factory Air cushion vent compartment being discharged into Light fluffy materials reduce speed up to 15 Certain materials may require perforated buckets O Aa jw N Some materials may be affected by static electricity Consult Factory Vendor Contact Please use the following list of contacts concerning maintenance or troubleshooting questions associated with components not manufactured by but Supplied on your conveyor equipment GEAR REDUCERS SUPPLIER PHONE NUMBER ALTERNATE CONTACT DODGE Fax 864 281 2381 FALK Fax 414 937 4359 www nord com SUMITOMO Fax 757 485 3075 DORRIS Intbtedorrisco com FURO DRIVE Fax 905 639 4895 MOTORS SUPPLIER PHONE NUMBER RELIANCE 803 297 4800 BALDOR 501 646 4711 SIEMANS 800 964 4114 414 251 7724 800 663 3117 ALTERNATE COMNTACT Fax 864 281 2381 www baldor com www sea siemens thomasrcgistcr com Fax 414 251 2748 Fax 847 593 1616 TOSHIBA SUPPLIER PHONE NUMBER ALTERNATE CONTA
25. veral feet from both ends using clamping angle irons and pull ends until a snug tension is achieved Splice belt by installing elevator bolts nuts and washers Often it is desirable to add one or more rows of additional bolt holes between buckets in the splice area This is accomplished by drilling the holes while the belting is clamped in the pretensioned condi tion If clamp splice is used follow instructions supplied with clamps 5 Installation NB Remove belt clamps and adjust take ups uniformly to both sides to remove any slack in the belt Use caution to avoid over tightening the belt as this can cause premature failure of Belting shafts bearings etc At this point it is advisable to run in the belt for a period of several hours to observe belt tracking and any further initial stretch The responsibility to do the splice correctly lies with the installer OB Install buckets using bolts nuts and lock washers provided It is a good idea to peen the bolt threads after the buckets are securely in place If plastic buckets are being installed use care to avoid over tightening Large diameter steel flat washers or fender washers are fre quently used with plastic buckets PB Adjust bibb to provide up to 3 4 to 1 clearance to buckets Install upper hood front and back section QB After satisfactory alignment and trial operation weld stops at each end of head shaft pillow blocks to prevent bearing move ment Stops
26. with the intermediate sections Replace hood sections after performing all installation steps H thru PC or PB H It is critical that the head shaft be exactly level Minor pillow block shimming may be necessary Check head shaft pillow block set screws for tightness MACHINERY Chain Type IC Remove boot sprocket access door Drop plumb line from head end sprocket to boot sprocket Insure that sprockets are centered in casing and are exactly in line with each other When erecting a double strand chain elevator check factory drawings for correct sprocket spacing Check to insure that the sprocket set screws are tight Sprockets should be in line when viewed from the narrow side of the casing Head and boot shafts are generally offset when viewed from the wide dimension of the casing Check factory drawings for offset Double strand chain elevators commonly will have no offset as identical sprockets are used at the head and boot sections JC Move boot take up to its uppermost position head end take up to lowest position Make these adjustments uniformly to both sides at the same time Many bearings will not accommodate much misalignment Severe damage to internal bearing parts and Seals can occur if this procedure is not followed KC Depending on lifting equipment and access available the chains and buckets can be preassembled or installed in 10 ft sections of chain with buckets to be attached later When installing offset side bar chain insu
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