V-SERIES SECTION B 5/02
Contents
1. U Correct alignment HH Angular offset linear offset Figure C7 1 Belt installation C8 1 Before a new set of belts are installed check condition of sheaves Dirty orrusty sheaves impair the drives efficiency and abrade the belts which result in premature failure C8 2 Wom sheaves shorten belt life as much as50 If the groovesare wom to where the belt bottoms slippage may result and bum the belts If side walls are dished out the bottom shoulder ruins the belt prematurely by wearing off the bottom comers C8 3 Installation and take up allowance Find the center distance and belt size on the Certified drawing in front of this manual Follow the belt tentioning in Section C6 C8 4 Neveremploy a used beltasa replacement fora unit of a set Used belts normally are wom in cross section and stretched A new belt C 6 so applied will ride higher in the sheave travel faster and operate ata much higher tension than the used belts The cord centermay be damaged allowing the new belt to elongate Shortly afterthisoccurs it will cease to accept its share of the load leaving the drive under belted Thus the new belt iswasted Belts are wom in cross section and stretched A new belt so applied will ide higher in the sheave travel faster an2. 452 453 xX xX i x x x x en ED STANDARD 7 RING STUFFING BOX FIGURE C5 1 lantem ring must be in the proper postion or damage may occur C5 6 Install ngs overthe shaft by twisting open as shown in Figure C5 4 This is especially important for metallic rings NEVER open rings with hinge like action C5 7 Insert ringsone ata time with joints staggered 90 apart Seat each ring individually compressing in place with a tamping tool orby using a split hollow cylinder Tum mixer shaft occasionally to assist seating Unless each ring is properly seated the gland followerwill not be able to tighten the packing set asit will leave the front rings nearest the follower ring too tight in the stuffing box Bearin mind that except forabrasives 70 of the wear nomally takes place on the two packing rings nearest the follower ring Proper sating and lubrica tion spreads the wear out more evenly over the entire set of rings Adjust followerfinger tight only to begin After shaft has been replaced to proper running position See Paragraph B5 1 for seal start up procedures Throttle locator pin 1 4 N P T Water flush Throttle bushing TEXEXKXX Kar aI FIGURE C5 3 FIGURE C5 4 BS 7441 4 2000
3. V BELT DRIVE MAINTENANCE C6 1 GENERAL RULES FOR TENSIONING BELTS C6 2 Idealtension isthe lowest tension at which the belt will not slip under peak load condition C6 3 Check tension frequently during the first 24 48 hours of run in operation C6 4 Overtensioning shortens belt and bearing life BELT DEFLECTION 1 64 PER INCH OF SPAN Figure c 1 C6 5 Keep belts free from foreign material which may cause slippage C6 6 Make v belt inspection ona periodic basis Tension when slipping Neverapply belt dressing as this will damage the belt and cause premature failure C6 7 Fortensioning the belts use Table C6 2 C6 8 Measure the span length K See figure C6 1 C6 9 Atthe centerofspan K apply force Tension the belts until this force deflects the belt 1 64 for every inch of span length Example The deflec tion of a 48 span would be 48 64 or 3 4 C6 10 Tension belts by raising or lowering the motor using the four large motor stud adjustment nuts directly underthe motor mounting plate Note measure the distance between the motorplate and the top of the housing Maintain equal dimensions at each comerto maintain proper alignment C6 11 Replace belt guard priorto running mixer under power Center Distance Allowance for Nanow Belt Installation and Take Up contact factory for values not shown in this table BS 7441 5 2000 Be
4. and s tscrewstightened sssssessesrerrrrrerreeerrrerens h All assembly bolts have been checked and tightened sssssssssssnrrinrirrsn i High Pressure Stuffing box Zirc fitting gea S d s esssessssrssrsrsririssrrsnsrereristnnenerennsrerenenenns i Wiring correctly installed grounded and insulated ee eceeceeeeeeeceeesee ee eseeieeeees k Motor checked for moisture absorption 2E D D g Impeller has been installed correctly see certified dra WINgS eessessserrenennn D T D J D D D Motorna meplate F L A F LA measured with ampmeter each lead Actual line volage measured each lead o Proper seal run in time allowed see Sec B5 for break in detail cD p Excessive vibration at mixer support OF fla nge sssssssssssresessssrssrsrererestnrenerernrnsrurenerenns q Excessive shaft runnout out seal Measure L r Mixeroperating to design pecificationS sssssisersrssrsrerirereirsnsreranisturenerernnisrnnenenenne INSPECTOR DATE BS 7441 5 2000 B5 SECTION C V SERIES MAINTENANCE AND LUBRICATION C1 1 V SERIES mixer shaft bearings are greased at the factory with a NLGI Grade No 2 Lithium 12 hydroxystearate grease suitable for roller bearingsin nomal operating conditions If mixer has been idle or tored fora while add fresh grease before running C1 2 Abnomalbearng temperature may indicate faulty lubrication Nomal temperature rangesfro
5. bushing requiresa constant flow of flush water during operation One side of the gland is tapped fora 1 4 N P T flush line the otherside hasa fitting with a pin that holds the throttle in postion See figure C5 2 Installa rotometer available from Sharpe Mixers and adjust for 0 1 0 2 gal min for 2 shaft to 0 3 0 5 gal min for 5 shaft FOR REPACKING THE GLAND SEE SECTION C5 START UP amp OPERATION B6 1 Before starting up visually inspect the mixer Verify that the mixer components matches the certified drawings in the front of the manual B6 2 Check all mounting and impeller bolts Verify that they are installed and have been tightened B6 3 The V Belts have been installed at the factory They may have shifted during shipment Remove the Belt Guard Item 376 Check belt installation and alignment Refer to Section C6 for properinstallation B6 4 Rotate mixer shaft by hand using the driven sheave Item 373 Check for binding shaft straightness and assure that the impelleris free of any obstructions in the tank Install Belt Guard when done B6 5 Check the stuffing box Item 400 for adjustment amp lubrication See Stuffing Gland Preparation amp Lubrication section B5 for installation and start up procedures B6 6 Test line resistance to check for possible moisture in the motor Referto Paragraph B4 3 Do not apply power if any resistance exceeds one to three meg ohms B6 7 Verify that the wiring is
6. floor covered with plastic and use desiccants to reduce moisture buildup If the motor shows signs of moisture absorption before start up dry the motor out by applying 10 voltage on two leads if in doubt measure resistance in windings one to three meg ohmsisnomal Relubncate motor before start up when in storage six months or more V Belts are best stored by removing them from the sheaves Spray a metal protectant on the sheaves or any other unprotected mild steel part Remove allthe metal protectant before reinstalling belts Mixershaft bearings require extra protection when stored Add grease until it shows at the seals rotate bearings to distribute grease and coverthe bearings va DO NOTLIFT THE MIXER BY THE SHAFT BS 7441 1 2000 B 1 MOUNTING THE DRIVE B2 1 Mounting structure must be stable and strong enough to handle torque bending moment and weight shown on assembly drawings The structure must not flex or vibrate when the mixeris in operation If mounting to an unstable support mixer loadsmay cause damage to the equipment tank or other hazards Always use gaskets between flange faces before bolting the mixerto the nozzle for proper sealing See figure B2 0 for mounting details B2 2 Pipe leg supports are nomally supplied on V Series mixers These aid in the support of the mixerand need to be attached securely Pipe legs and bases by others must be cut to lenght and thread
7. of light oil may aid in bearing removal from shaft C4 10 Remove the inner bearing mounting boltsand slide the bearing off the shaft Tighten jacking screws 08 to aid in removal CAUTION Be sure to remove bearings slowly and straight out so asnot to disrupt the static seal at the mounting flange C4 11 Inspect bearings for wearand dam age replace when necessary C4 12 To reassemble reverse procedure Clean shaft forbearing installation Innerbearing 307 must be brought back into it s original position prior to start up Tighten all bolts setscrews and replace the snap ring before operating mixer j O C 3 BS 7441 3 2000 FIGURE C4 1 STUFFING GLAND MAINTENANCE C5 1 REPACKING THE GLAND Packing tools Special flexible corkscrew tools specifically designed for packing make seal servicing an easy task see Figure C5 1 Various size tools are available from Sharpe Mixers C5 2 Once powerhas been disconnected and shaft retraction hasoccumred see Section C2 1 remove the old rings Ifa lantem ring is present there are 4 slots cut into the outside edges This helps the packing tools grab the lantem ring for removal Use caution when removing old rings Do not score shaft Before installing
8. the new rings be sure that the new packing is of the propertype and size for your application see Data Sheet and salesdrawings in front of manual for seal size and configuration C5 3 If you purchase your packing rings from other than Sharpe Mixers you may have to cut the rings yourself To do this wind the packing around a mandrel of the same diameter asthe mixer shaft for the desired number of rings see Figure C5 3 Cut rings by making a straight cut along the mandrelas shown When removing rings from mandrel dip them off without opening the rings This is especially important for metallic types Do notopen witha hinge like action see Figure C5 4 C5 4 Check condition of stuffing boxand the shaft in the seal area If eitherare rough orscored they need to be reworked orreplaced Without repairing the damaged areas gland take up will result in distortion of the rngsand over compression of the packing on the mixer shaft The packing will not seal propery and will bum out sooner further damaging the seal area If wearing in the seal area is evident contact the factory for recommendations C5 5 Coatnew ringswith a lubricant to assist with installation and break in Do not use on food grade packings liquid oxygen service nitric acid or any othernon compatible application Check position of allgland parts against the applicable seal drawing Replace allwom ordamaged parts The
9. 0 INSTALLING THE MIXER IMPELLER WARNING Always lockout power before installing or removing impeller B3 1 Referto mixer assembly and impeller detail drawings in the front of the manual for proper impeller rotation positioning and placement B3 2 1 Piece Impellers See figure B3 1 Slide the impeller on the shaft facing the comect way according to the assembly drawings Forimpellers with keys tighten the setsc rew securely over the key Do not hammer partsin place If keysdo not fit grind to size 1 PIECE HYAO Il FIGURE B3 1 B3 3 Split Hub Impellers See figure B3 2 Align key and clamp split hub impellerto shaft Be sure to maintain equal 1 4 gaps between hubs to insure correct blade alignment and vibration free operation Tighten split hub impeller boltsto the following torque ratingsin table below If impellers where shipped with shims discard priorto assembly do not use to assemble on mixer shaft Bolt Torque Ratings split impeller bolts only 1 2 bolt 29 ft Ibs 5 8 bolt 54 ft lbs 3 4 bolt 96 ft Ibs 7 8 bolt 150 ft lbs 1 4 GAP FIGURE B3 2 MOTOR CONNECTIONS amp LUBRIC ATION S B4 1 WARNING High voltage and rotating parts can cause serous or fatal injury Electric machinery can be hazardous Installation operation and maintenance of electric machinery should be performed by qualified personnel Familiarity with NEMA safety standards Nat
10. R MAKING PARTS INQUIRY THIS SERIAL NUMBER IS LOCATED ON THE SHARPE MIXER NAMEPLATE amp ON THE FRONT COVER OF THE SERVICE MANUAL OR WARRANTY WILL BE VOIDED DISREGARD WHEN MIXER IS OUTOF WARRANTY PERIOD RECOMMENDED SPARE PARTS C10 0 Recommended spare partsare different for individual needs The main factor affecting which parts should be kept on the shelf of the useris downtime allowable time period the mixercan be out of service Note Impellers although not nomally wearing parts may be damaged and require repair replacement These parts are long delivery itemsand should be considered if extended down time isunacceptable Forany downtime all wearing parts are nomally commended spares These include bearings lantem rings pack ing gaskets V belts wearsleevesand shafts Standard shipment Recommended partsto stock forrepairdue to long delivery 8 to 10 weeks Complete mixer sizes V40 and above Consult factory to expedite 6 to 8 weeks Complete mixer sizes V30 and below Consult factory to expedite 5 weeks Hardened shafts special motors call for quote 3 to 4 weeks Machined parts wearsleeves impellers stuffing gland throttles bushings mixer shafts belt guards 2 weeks Standard motors 3 to 5days Stock motors gland packing V belts bearings sheaves bushing Expedited Services Consult factory for price and delivery C 9 End of Section C BS 7441 9 2000
11. We SERIES MIXER WIT STUFFING GLAND SECTION B TABLE OF CONTENTS SECTION A MIXER DATA SHEET amp DRAWINGS wsssssssssssssssssesntsstsnstsetnstsetnstnessasianintseintsesnsnsessansesnssse A 1 SECTION B__INITIALINSPECTION RECEIVING AND STORAGE uvesssssssssssssssstintsseinstistintiasintsssinetisssnsesssistsesn Bl MOUNTNG THE DRIVE iscnacnssasnepsaconiesnitssnesents nissan eet evts bate nibinsbven B 2 INSTALLING THE MIXER IMPELLER sssssssssseesssssesnstsetsntsstintsassnssstsnststenstnsenssnesintaesnsinensses B 3 MOTOR CONNECTIONS amp LUBRICATION wssessssssssstsstsstsstinsistinsisstnstntesstnsesntnesintneinsinesnsiee B 4 STUFFING GLAND PREPERATION amp LUBRICATION wsssssssssssseesssntesetsstsasinstsosassaniassnnsneesesneeseene B5 STARTUP amp OPERATION E sym esssssssssssssssasensiassnstsssastssssessssnssesene B 6 START UP CHECK UST ssstsssitesnsnnss Ain AT T Mi La D ET DAT B 7 SECTION C V SERIES MAINTENANCE amp LUBRICATION tsstaccsseasessstnesntinnsstenterntntisnsstisosanesossvesananecesisee Ci SHAPE RETRACTION s arapi ironista a p sia n a iaa i e ii Co OUTER BEARING REMOVAL o sscosssssssesPOPPORRP Ah aaaf ass annans ass ase et AE C 3 INNER BEARING REMOVAL w ssssssecssssesnstsstisstistsntistinsistsinsistsinsintessinetsnsntintneinssessisssnsines C 4 STUFFING GLAND MAINTENANCE Repacking ossssssssssssssstsstustisnsinesanintsnsinetsnsstinsineinsinen C 5 V BELT MAINTENANCE ctccenaasassioncarnsts cin cies dousntaimnaaeatannutinactontsi
12. agianeamuncnrtsssnid C 6 TROUBLE SHOOTING GUIDE wsssssssssssesssssesntssetinstisetinststtnstiesintiasintssintisssinstssssiissneiesineee T SECTIOND MISCELLANEOUS DETAILS amp INSTRUCTIONS when required INITIAL INSPECTION RECEIVING AND STORAGE B1 1 This mixerhas been inspected at the factory Immediately upon receipt of the equipment check the crating and contents for any damage that may have occured in transit Check against the packing sip and the certified drawings in section A to make sure that all parts were received Report any damage or missing items immediately to the camer and to Sharpe Mixers Keep shipping containers for possible future storage orshipping B1 2 WHEN LIFTING THE EQUIPMENT USE NON METALLIC SLINGS TIGHTENED AROUND THE MIXER HOUSING Verify all loads are balanced before lifting Do not stand undemeath suspended loads Do not lift the mixer by the shaft Do not lift the mixer using the motor lifting lug alone B1 3 Storage Storage is when a mixerhas been delivered to the job site and is awaiting installation b mixerhas been installed but start up mit PERS LIFT MIXER USING SUNG ERS TIG HTENED AROUND THE MIXER HO USING has been delayed c there are long idle periods of time between operating cycles store the mixerin a clean dry location with circulating air free from wide vanationsin temperature Electric motors are easily damaged by moisture Store the entire unit off the
13. ature of service and environment B6 14 Inthe event of a break down within the warranty period Sharpe Mixers must be notified within 15 days if it isintended that the warranty is to coverthe problem When requesting spare replace ment parts anytime have serial number and model number off mixernameplate readily available Do not disassemble components or otherwise modify equipment without prior authorization from Shame Mixers or waranty willbe voided Sha pe Mixers will not accept back charges for any repair work that has not been previously authorized BS 7441 4 2000 START UP CHECK LIST WARNING Lockout Tagout power before servicing orstart up High voltage and rotating CAUTION DO NOT START MIXER WITH IMPELLER BURIED IN SOLIDS OR WITH LIQUID SOLUTION SO UDI FIED DAMAGE WILLOCCUR parts can cause serious or fatal injury B7 0 StartUp Checklist Prior and during start up please check that the following things have been done a Manual hasbeen read and followed cece reese esenesesinenececneesereneretene b All Certified drawings have been reViCWed oo eeecceteseeteeee cee eeeeeeeeeeeteetaeeieeeeeeeeeetaes Ci Outboard support hasbeen shimmed and leveled so that the mixer flange is parallel to tank fla Ng Esiin ennnen d Driven belts have been aligned and tenSOne du ceecsesceceeeeeeceeeteeesaessaesneneeneeeaes e All guards have been installed iiini ninnaa f Bearings have been greased
14. bris before removing bearing from shaft Use of a light oil may aid in bearing removal from shaft C3 5 Loosen bearing setscrews Remove the mounting bolts from the bearing removal plate Slide the outer bearing 302 with plate 320 off end of shaft two bolts threaded in the tapped holesin the removal plate can be used asjacking screws if the bearing is stuck Pa Gr 7 377 N C 2 FIGURE C2 3 BS 7441 2 2000 INNER BEARING REMOVAL WITH FULL TANK C4 1 This procedure isto remove both mixer shaft bearings from the mixer while mounted to a full tank See figure C 4 1 C4 4 section C2 1 Follow the Side Entry Retraction in C4 5 Remove split support collar from shaft Clean bore of collar C4 6 Move the High Pressure Stuffing Box follower plate and the followerring towards the innerbearing C4 7 Reinstall the support collar in place of the removed seal components with the register fitting inside the packing gland Tighten collar onto shaft while holding the collar tightly against the gland This will hold the shaft in place while the bearingsare removed C4 8 Remove the outerbearing using the procedure described in Section C3 1 C4 9 Loosen the inner bearing setsc rews 314 remove the snap ring 307 Be sure shaft isclean before moving bearing Use
15. d operate ata much higher tension than the used belts The cord centermay be damaged allowing the new belt to elongate Shortly afterthisoccurs it will cease to accept its share of the load leaving the drive under belted Thus the new belt iswasted Belts of different manufacturers should not be mixed for the same reasons C85 To place the belts on the sheaves shorten the center distance of the sheaves until the belts can be installed without forcing Forcing belts on sheave can caus intemal injury to the belts BS 7441 6 2000 TROUBLE SHOOTING GUIDE PROBLEM e Shaft will not fit into drive POSSIBLE CAUSE e Bearing Set screws extend into bore e Shaft over size proper dia 0 001 0 002 under nominal dia Damaged shaft Oversize key SOLUTION e Loosen set screws Measure and consult factory Consult factory e Grind key to fit e Mixer will not start eIncomect wiring Loose connections e Blown fuse eIncorect voltage elmpeller interference Water damage to motor eWrong size heaters in starter eCheck wiring diagram and wire correctly eCheckand tighten connections eReplace fuse Wire for correct voltage Free all debrisfor rotation e Service orreplace motor consult factory eReplace heaters e Mixer will not reach conect Ovenoad of motor eCheck amperage against nameplate data speed e Loose drive coupling bolts eCheck coupling bolt tension coupling and or shaft maybe da
16. e Bearing failure e Belts over tensioned Sheaves too small e Sheaves too far out on shaft e Misaligned sheaves motor e See all items under Noisy e Tension propery e Consult factory e Place sheavesasclose as possible to bearings e Align Belt slippage e Rapid belt wear e Overload of drive e Wom sheaves e Excessive oil dust grease e Impropercompanion sheave size e Undersized P D belt riding on bottom of sheave e Misaligned sheaves e Loose motor supports e Consult factory e Replace sheaves e Provide better shield e Consult factory e 1 32 min belt clearance when belt at pulley s min pitch dia Realign sheaves remove bends Replace undersized screws or broken base e Damaged orwom grooves sheaves e Excessive temperatures e Mechanical interference e Overloaded drive e Broken belt cords excessive spring tension e Dirt grt entering drive e Sheavestoo small e Oilorgrease on belts or sheaves e Tensile members damaged through improper installation Replace sheaves e Remove source ventilate belt guard e Remove interference move pulley e Consult factory e Reduce pulley HP rating spring tension e Air ventilate belt guard e Consult factory e Remove source of oil orgrease clean belts grooves with alcohol moistened cloth e Replace with new matched set insta ll properly Vibration e Sheave wobble e pulleys sheaves out of balance e Pulsating
17. ed to match the pipe leg supports After installing the flange mounting bolts tighten the pipe leg supports until the weight of the mixer has been transfered equally between the nozzle and the pipe legs The specific size and location of the pipe legs are called out on assembly drawing in Section A See Figure B2 1 for mounting details The pipe leg supports may ship in a separate box from the drive and may require assembly to the drive during installation B 2 B2 3 Tie Rod supports need to be positioned on each sde of mixer at 45 above centerline and 45 from mixercenterline and sec ury attached to the tank After installing the flange mounting bolts tighten the tie rodsuntil the weight of the mixerhas been transfered equally between the nozzle and the tie rods See figure B2 2 for mounting details B2 4 Pier supports need to be built under the base of the V Series housing After installing the flange mounting bolts shim the pier until the weight of the mixerhas been transferred equally between the pierand the nozzle See the assembly drawing in Section A forstud location See figure B2 3 for mounting details TANK CENTERLINE 3 SAFTAND_ XER SHAFT NOZAE CENTERING PLAN VIEW FIGURE B2 0 D 2 6 Min FIGURE B2 1 m D D 2 6 Min FIGURE B2 2 FIGURE B2 3 BS 7441 2 200
18. installed grounded and insulated Check Motor wiring against the diagram supplied with the motor B6 8 Priorand During start up complete the start up check list section B7 0 B6 9 If impeller is buried in solids prior to starting mixer solids must be dispersed This may be achieved with an air hose a recirculating pump ora large stirring stick if nec essary depends on tank size B6 10 Extended operation of the mixer when liquid level isat ornearthe impeller is not recommended Excessive loading and vibration will occur B6 11 When mixing products of dissimilar visc osities and or specific gravities the lighter or less visc ous material should be introduced first Gradually add the heavier material or powdersinto the center of the tank while the agitator is running Never dump large amounts of powder or solids into the mixing tank This may create clotting or sanding in of impellerand cause damage to the equipment B6 12 Keep motors free from oil dust dirt water and chemicals Keep airintakesand outlets free from foreign materal Electric motors supplied although designed for outdoor use may be dam aged due to weather A rain hood orother protec tion may be necessary to prolong motor life Consult factory forrecommendations B6 13 Regular maintenance isthe best assur ance of trouble free long life mixer operation Inspectand relubricate at regular intervals Fre quency and thoroughness depends on operation n
19. ional Electrical Code and B4 5 WARNING Ground the mixer motor propery to avoid serious injury to personnel Ground ing needsto be in accordance with the National Electrical Code and consistent with local building codes local building codesare required B4 2 Wiring Starting and overload control devices must be matched to motor rating Follow control manufacturer s instruc tions for proper con nections and installation B4 3 Electrical connections must conform to National Electrical code and alllocal regulations Line voltage and wire capacity must match motor rating stamped on motornameplate B4 4 Electric motors 3 phase Motors requiring 3 phase power must be wired according to the wiring diagramson the motor Rotation of the impeller must be according to the assembly drawing and data sheet Interchange lines if necessary for proper rotation BS 7441 3 2000 B4 6 Electric AC Variable Speed Electric motors using an AC variable frequency controller must be wired following the instructions supplied with the controller See data sheet and assembly drawings for possible RPM lockout ranges Operate only at speeds outlined on those sheets Damage to equipment or serious injury to personnel can result If speed limitations are not followed B4 7 Motor lubrication Electric motor bearings are often sealed and need no relubrication When zirc fittings are present relubricate with a No 2 consistency lith
20. ium soap base and petroleum com pound Relubncate every 6 monthsto 1 year depending on usage Open and clean drains Add grease until new grease isforced out drain Remove excess grease and replace input plugs Run motor one half hour before replacing drain plugs STUFFING GLAND PREPARATION amp LUBRICATION B5 1 DO NOT OVER TIGHTEN THE PACKING Stuffing glands are designed to control leakage not to prevent it During start up permit generous initial leakage Gradually take up gland nuts1 6tum 1 flat in hex nuts ata time Watch temperature NEVER PERMIT HEAT TO DEVELOP BACK OFF GLAND NUTS IF ITDOES Asleakage levels off on side entry units tighten at 15 minute intervals until leakage is controlled without developing heat Ona 2 dia side entry shaft permit 10 to 30 dropsperminute a 4 shaft would be allowed to leak twice as much etc B5 3 7 RING STUFANG GLAND WIH LANTERN RING LUBRICATION Stuffing glands come with a irc fitting on the side of the seal housing and should be greased regulary When mixing abrasive non lubricated liquids the zirc fitting should be greased daily Weight loaded lubricators or other self lubricat ing devicesare available from Sharpe Mixers to aid in seal lubrication When seal flushing is required remove the 1 8 zirc fitting and replace it with flushing lines supplied by others Flush with clean liquid having lubricating properties B5 4 5 RING GLAND WIH THROTILE BUSHING A throttle
21. loads belt hop and skip e Excessive pulley spring tension C 8 e Replace distorted eccentric sheave wom QD bushing e Determine cause consult factory e Belts side surfaces glazed replace remove oil from pulley s flange surfaces e Install lighter HP rated pulley consult factory BS 7441 8 2000 PROBLEM Seal leakage POSSIBLE CAUSE Properamount of leakage Wom packing Scored shaft e Insufficient inc orrect lubrication e Excessive heat in gland e Split in packing rings not offset eChared glazed packing e Solids in seal gland Scored shaft Insufficient inc orrect lubrication e Excessive heat e Exc essive shaft runout SOLUTION e See Section B5 Replace packing Replace shaft and packing check stuffing box also for possible scoring eLubricate properly see Paragraph B5 check parts for scoring replace if necessary Back off gland nuts replace packing if necessary check parts for scoring replace if necessary e Remove packing reinstall offset see Section B5 Improper run in replace packing see Section B5 e Flush propery see Section B5 eReplace shaft and seal lubricate flush seal Lubricate properly see Section B5 eLubricate propery orconsult factory a special packing may be required e See Shaft vibration ALWAYS REFERENCE THE MIXER SERIAL NUMBER CAUTION DO NOT MODIFY MIXER WITHOUT PRIOR AUTHORIZATION FROM SHARPE MIXERS EN ee ORDER O
22. lt Deflection Force Ibs V Uncogged Dyna V COG Smallest Pyna Sheave Polyband Cogged Polyband Cross Diamete Section rRange Nomal New Belt Nomal New Belt 2 2 2 4 3 3 4 9 2 65 3VX 3 65 3 6 5 1 4 2 6 2 4 12 6 90 49 7 3 5 3 7 9 4 4 6 7 10 2 15 2 5V 7 1 10 9 12 7 18 9 14 8 22 1 5VX 11 8 16 0 15 5 23 4 17 1 25 5 12 5 17 0 33 0 49 3 8v 18 0 SA 39 6 59 2 Table C6 2 C 5 Sheave installation C7 1 QD bushingscan be installed in either position bushing flange toward motororaway from motor Before final installation determine best position so asno mechanical interference will occur with belt guard installed In either case sheave mounting bolts will be installed from the outside through the holes of the outer piece and into the threaded holes of the part next to the motor either bushing flange orsheave hub Be sure keysare in place to assist in torque transmission C7 2 Sheave alignment Adjustment needs to be checked to maximize life of the sheavesand belts see Figure C 7 1 Thisisdone by placing a straight edge acrossthe sheave faces so that it touchesall four points of contact Ordinarily a misalignment of 1 2 1 8 per foot will shorten belt and or sheave life Improper sheave alignment produces uneven wearon one sde of the belt causes belts to roll over in the sheave orthrowsall the load on one side of the belt stretching or break ing the cordson that side x
23. m cool to touch to too hot to touch for more than a few seconds depending on bearing size speed and ambient conditions Unusually high temperatures with excessive leakage of grease indicatestoo much grease High temperature coupled with no grease leakage at the seals indi cates too little grease especially if the bearing seems noisy Normal temperatures and small bead of grease at the seals indicates proper lubrication C1 3 Lubrication of mixer shaft bearingsis required every 5 to 12 weeks depending on usage V SERIES PART DETAIL eee OON 372 SARPE 374 452 371 453 o 451 320 PTA 454 3024 22 750 675 373 674 as ANNIE 77 i DS 376 A 459 463 307 450 314 300 556 ITEM PART NAME 382 Driven bushing key 100 Motor 450 High Pressure Stuffing box 103 Motor bushing key 0451 Seal packing rings 123 Motor mounting bolts nuts amp washers 452 Follower plate 130 Motor mounting plate 453 Follower ring 131 Motor sheave tension studs 4 e454 Lantem ring Throttle bushing 132 Motor sheave tension nuts 16 459 Seal Zrc fitting 300 Inner bearing 458 Slinger e302 Outer bearing 463 Throttle t 306 Bearing moun
24. maged if mixerhas been run with sipping coupling See Mixer will not start eMotorrunshot eLow orhigh voltage e Wire for correct voltage eAmperage overload Product too viscous e Restricted ventilation e Frequent starting and stopping eUnbalanced voltage between phases eInconect rotation Product too viscous elmpeller installed backwards elmpeller too close to tank floor eLack of improper lubricant eImproper output speed e Build up of sediment on tank bottom e Undersized heaters CAUTION DO NOT MODIFY MIXER WITHOUT PRIOR AUTHORIZATION FROM SHARPE MIXERS OR WARRANTY WILL BE VOID DISCARD WHEN MIXER IS OUT OF WARRANTY PERIOD BS 7441 7 2000 eCheck viscosity and specific gravity of product consult factory Clear vents eCheck with factory a special motor may be required e Consult electrician eChange motor leads per nameplate instructions eCheck viscosity and specific gravity consult factory eCheck against assembly drawings conect if required eraise impeller eAdd orchange lubricant see Section C eConfim speed consult factory Clean orimgate sediment eReplace with conect heaters PROBLEM e Noisy POSSIBLE CAUSE eMechanical interference between belts amp belt guard Belt slippage e Misaligned sheaves e Sheave wobble SOLUTION e Check belts for proper tension e Retension drive e Align sheaves e Tighten setscrews check alignment
25. ring plate so the bearing and shaft move out approximately 1 16 to 1 8 until further retrac tion becomes difficult This tightness indicates that the seal collar and gasket have pressed tightly against the tank side of the mounting flange and a proper static seal hasbeen attained See figure C2 1 forretraction detail 2 5 The mixer isnow ready to have the seal serviced See Section C5 0 for procedures C2 6 To retum shaft to its original position loosen Jacking bolts 308 and tighten bearing mounting bolts This will bring bearing shaft back to its Original position Tighten all bearing setscrews C2 7 The mixeris now ready forservice See Section B5 for Stuffing Gland Preperation amp Lubrication and see Section B6 for Start up and Operation r e a RETRACT SHAFT UNTIL SEAL COLLAR AND GASKET PRESS TIG HT TO THE FLANGE FACE 308 em a 1 16 MIN 308 FIGURE C2 1 OUTER BEARING REMOVAL C3 1__This procedure isto remove the outer bearing from the mixer If the inner bearing 300 is also to be removed and serviced see Bear ing removal with full tank Section C4 1 Note shaft retraction isnot required to remove outer bearing C3 2 Disconnect the powerfrom the mixer C3 3 Remove the belt guard 376 belts bushing 375 and large sheave 373 C3 4 Clean shaft of dust dirt and de
26. ting bolts amp washers 551 Mier pedestal 307 Bearing map nng 552 Mounting flange 308 Bearing jacking bolts 2 555 Tie rod assembly not shown 314 Bearing setscrews 556 Pipe leg supports Shown 320 Bearing removal plate 559 Mounting flange bolts amp washers by others 371 V Belts 600 Mixer shaft 372 Motor sheave 672 Retraction collar 373 Driven sheave 673 Support collar bolts 374 Motor bushing 674 Seal collar 375 Driven bushing 675 Seal collar gasket 376 Belt guard 676 Seal collar setsc rews 3 377 Belt guard base 730 Impeller key 378 Belt guard bolts nuts amp washers 731 Impeller setsc rew 379 Belt guard base mounting nuts amp washers 8 750 Impeller 380 Motor sheave busing bolts amp washers 3 R ded i 381 Driven sheave busing bolts amp washers 3 She commence pele pa BS 7441 1 2000 FIGURE C1 1 SHAFT RETRACTION C2 1 The shaft retraction feature is normally provided for larger side entry mixers This device allows seal replacement without draining the tank The following procedure outlines the operation of shaft retraction Referto FiguresC1 1 and C2 3 for parts identification C2 2 Disconnect the powerfrom the mixer C2 3 Loosen the mixer shaft bearing setscrews in the outer bearing 302 Loosen the inner bearing mounting bolts a pproximately 1 4 Do not remove the bearing or snap ring at this time C2 4 Tighten the two Jacking bolts 308 in the inner bea
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