剪切泵说明书(中英文)

剪切泵说明书(中英文)剪切泵说明书(中英文)剪切泵说明书(中英文)剪切泵ShearPump安装使用说明书DiectionsForInstallationAndOperation成都西部石油装备有限公司ChengduWeastPetroleumEquipmentCo.,LTD目录7781112DERECTORYIntroduction152.Principleofoperation15Explanationofmodel17Performancetable17Structuraldrawing186.Guidletoinstallation,operationandmaintenance20Foreword20Emphases20Installation20Operation24Maintenance25WJQ5″6J-10剪切泵使用说明书作用WJQ5″6J-10剪切泵是一种特地用于剪切聚合物和粘土并已被现场使用和理论证明有效的机械。在钻井液系统中，聚合物（或粘土）应提前充分地剪切今后，再进入钻井液系统，才能充分发挥其功能，改进钻井液性能，如果没有充分剪切，聚合物在第一次循环中即可能拥堵振动筛网，损失大量的聚合物，增加钻井成本，并且还可能使钻井液中的大尺寸的固相颗粒变硬而难以除掉；在完井液中，由于没有充分剪切，聚合物会产生好多“鱼眼”。这些“鱼眼”会伤害地层，使地层浸透率降低，油气层减产。经过事实证明WJQ56J-10剪切泵拥有优异的性能，它能为高分子聚合物（也能为粘土）迅速水合供应高度的剪切，解决聚合物（或粘土）在钻井液中或完井液中因水合不好而存在的突出问题。同时，使用WJQ56J-10剪切泵能使聚合物用量减少15%以上，膨润土用量减少30%以上，并且改进了泥饼和液流损失，降低钻井液剪切比速率，提高凝胶强度，达到了外国同类产品的先进水平，其轴封结构更可靠，使用保护更方便。2．原理WJQ5″6JC-10剪切泵密封采用了特别可靠的机械密封，保证无泄漏。泵内部配有一个300mm不锈钢涡轮（其上有导叶、叶轮、44个喷嘴、4个收集室），及一个剪切板，能够产生高出s的小端剪切（液体剪切），当液流经过剪切泵时，有一半（50%）的液体在涡轮收集室的强力推进下将被剪切两次。该涡轮剪切泵安装在一专用底座上，并用皮带轮、窄V带和55KW/75kw防爆电动机驱动，与剪切泵配套使用的还有一个尺寸合适的ZHP150混杂漏斗，这样组成了一个完满的剪切及水合作用系统。由于该泵轴封的改进，使其寿命大大提高。如依据该泵安装及特别条件应用的规则，将进一步提高其性能。本公司将对在油田及工业应用中有利于提高该泵性能的一般及特别建议进行办理。注意：该泵不能够用于活性泥浆系统，由于系统中的钻井固体及重晶石，它们在碰到剪切时将很快破坏该泵。原理如图一：图一WJQ5″6JC-10剪切泵原理图聚合物流体从V流道进入，并以平行与剪切板P的方向抽送，收集室内液流量的50%经过44个喷嘴N射出，并以高速冲击剪切板P，尔后在M处90方向进入泵的蜗壳收集室。总流V及射流N沿着剪切板流动到达剪切盘的尖端T，在尖端有好多牙齿，高速旋转的牙齿使聚合物（或粘土）再一次被剪切。这样就达成了聚合物（或粘土）高度剪切而迅速水合。3．型号说明WJQ5″6J-10涡轮名义直径（英寸）密封形式泵入口直径（英寸）泵出口直径（英寸）涡轮剪切泵4．性能表(表1)流量扬程转速效率汽蚀余功率(kw)型号(m3/h(r/min量(m)(%)轴功率配套功))(m)率WJQ563222802834655J-10155WJQ563222802834675J-10155图二WJQ5″6J-10剪切泵特点曲线5．结构图图三WJQ5″6J-10剪切泵结构图WJQ5″×6"J-10"剪切泵部件明细表(表2)序号数量零部件名称序号数量零部件明称11泵壳274螺母21叶轮组件284垫圈31剪切板291压板组件41加强板301O型密封圈55×51护板311填料61填料箱321销71右端盖331轴套82油封××12341机械密封轴承231392（GB/T281-94）351加强套101油孔盖361盖型螺母111泵座371方螺母121轴承座381垫圈131O型密封圈140×391前护板142轴承7311ACM/DB（GB/T292-94）151O型密封圈125×161油杯GB1152-89172圆螺母GB812-88182锁紧垫圈GB858-88191左端盖201油封××10211轴221油标A12231丝堵ZG1/2241挡泥环251堵头ZG3/4264调治螺栓6．WJQ5″×6"J-10"剪切泵安装、使用、保护指南序言本指南仅就WJQ5″×6"J-10"剪切泵的安装、使用、保护中的一般性问题作了介绍，供参照，本指南不能够解决的问题，请与本公司售后服务部门联系，将会及时地给你答复。重申诉明该泵只幸亏设计范围内使用。该泵主密封是机械密封,填料密封为辅密封,当机封无效后，方可压紧填料密封,否则造成密封不用要破坏。该泵空转不能够高出5秒,必定注满液体泥浆方可运转,否则会造成机封破坏。安装图四WJQ5″6J-10剪切泵安装系统流程图剪切泵系统由剪切泵、混杂漏斗、管线及聚合物（或粘土）水合罐组成。为便于安装和运输，聚合物（或粘土）水合罐由井场泥浆罐的一个隔仓组成。图五WJQ5″6J-10剪切泵外形图法兰尺寸（单位：inch）表（3）泵法兰盘

DN

D

d

b（mm）

n-d出口法兰

5

1081/

2

26

8-7/8入口法兰6113/891/2268-7/8注：DN法兰通径，D法兰外径，d连接螺纹孔中心距，b法兰厚度，n-d连接螺栓孔数及孔径。WJQ5″×6"J－10"剪切泵总成明细表(表4)序号数量零部件名称序号数量零部件名称11底座116销轴21剪切泵126张口销38螺栓132螺柱48垫圈144螺母54螺母154窄V15电机61161大皮带轮55KW/75KW71键81帐套91小皮带轮101护罩泵安装泵的安装地址应尽可能凑近抽送源，以缩短吸入段的长度，减少吸入损失。泵安装基础应水平，牢固可靠，以防范振动。皮带轮的安装A.两皮带轮轴线必定平行，且端面误差不得高出2mm。皮带必定找正、绷紧。C.电机安装必定平稳、牢固。入口管路安装吸入管路截面积必定大于或等于泵流道断面积。吸入管路中不一样意安装节流阀，但能够安装常开阀以减少液流凌乱，该阀只幸亏拆泵进行检修时才能关闭。C.为防范吸入管路中产生汽泡，抽送源和泵之间应从高到低逐渐过渡。若是用户需要泵在有吸程情况下使用，请采用真空泵或底阀引水。D．泵入口处的管路必定平直，其长度最少为吸入管路直径的二倍。E．当临时使用软管吸入管路时，必定保证软管不被压缩，这是由于吸入段管内压力一般都比大气压低，在大气压作用下，软管被压缩，从而以致流量降低甚至断流。出口管路A．为便于泵的检修，出口管路中应该安装常开阀。B．全部管路（包括入口管路）必定有自己的支撑，绝不一样意由泵承受管路重量。C．当工作条件不明或不稳准时，出口管路中必定安装节流阀，以保证泵在设计点运转。D．当泵出口与压力设备相接时，在节流阀和泵出口之间必定安装止回阀，以防范液体回流，否则，回流液会以致泵发生“水锤现象”而破坏。使用准备A．用手转动泵轴，必定保证运转灵便，各处不得有摩擦声。B．检查转向，必定保证与泵体所示转向一致。C．全开入口段的阀门。D．给泵体和入口段管路注满液体，以排出空气。运转操作A．准备工作全部结束后，开动电机。润滑A．轴承润滑a．轴承采用30号机油润滑，润滑油应加至油标的中线，不要加过多油，否则将以致轴承振动和过热。每90天或1000小时换油一次。b．在特别情况下，轴承可用与润滑油相容的润滑脂润滑。B．填料腔润滑a．填料腔必定经常润滑，以防范填料过热而破坏，一般要求每天最少一次。b．注入润滑脂时必定旋转泵轴，以使其充分进入填料腔，直到填料压盖端有油脂溢出为止。保护（参照图三及部件明细表2）A．拆卸：a．拆下皮带轮组件。b．拆下填料压板组件（26）。c．卸掉泵壳（1）。d．拆掉叶轮组件（2）、剪切板（3）、加强板（4）：先拆下螺母（33、34）（螺母为反扣）及垫圈（35），注意如无叶轮扳手，则用木制垫块和木榔头敲击涡轮背部辐筋，退出叶轮组件（2）（拆出时应先在皮带轮端卡住轴，以防转动）。e．拆掉加强套（32）和机封动环组件（31）。．拆掉护板（5）和填料箱（6）。g．退出轴套（30），若是轴套过紧，可用楔形块敲击其尾部（轴肩处）使其松动。h．退出挡泥环（24）。．拆下左、右端盖（7、19）。．从轴承托架内退出轴承总成。k．松掉锁紧垫圈，拆出锁紧螺母（17）和锁紧垫圈（18）。l．拆下轴承托架，退出轴承（14）（用垫块垫上，敲击轴中心）。m．退出轴承（9）（用3英寸套筒对准轴承内圈，敲击套筒使内轴承退出）。B．检查a．叶轮：严重汽蚀（特别是主叶片）、过分腐化、磨损、破坏时，要求更换叶轮。b．轴：径向跳动高出，轴承座及油封地址严重擦伤，轴上螺纹、沟槽、台肩及其他表面有伤害时，要求修整轴，无法修整时，则更换轴。c．轴套：表面粗糙及伤害严重时，更换轴套。d．经过拆卸的油封必定更换。e．转动轴承：对过分磨损，运转时过紧、过松或有噪声的轴承必定更换（新轴承只有在更换时才能开封，所换轴承必定和泵原用轴承型号、尺寸一致）。f．O型密封圈：一般经过拆卸的O型密封圈应更换，对其它密封垫片等，只要没有破坏，也能够再用。C．装置（参照图三及部件明细表2）a．装置前全部部件必定冲刷，特别是O型圈密封槽，螺纹、轴承及轴承润滑部位，要仔细冲刷，对一些粗糙部位还应用细纱布打磨。b．装轴承（14）时，两轴承应背对背安装，旋进锁紧螺母后要扣住锁紧垫片，锁紧螺母紧固力矩：346牛·米。c．在装轴套（30）时，在轴上涂一薄层减摩剂。d．叶轮反面和护板之间的缝隙为。e．填料压盖不能够拧得过紧，否则泵运转时可能以致填料烧坏。．装置序次按拆卸逆方向进行，装置好后，转动轴应灵便，各部位不得有阻卡。如有阻卡，调治螺栓（26）和螺母27）。上紧螺栓（26）是将泵轴及轴上的部件向右搬动，松动螺栓（26）是将轴及轴上的部件向左搬动。注意：无论是将轴左调或右调，调整达成后，必然要将螺栓（26）上紧，螺母（27）并紧，以防范轴运转时轴向窜动。D．故障及消除a．填料密封泄漏严重，填料严重磨损，轴套表面磨损。——拆下填料，用一细铁丝波折90，在轴套壁上搬动，若是检查到有过深的沟槽则更换轴套，填料压盖压得过紧以致填料磨损严重。b．聚胺脂油封（20）磨损严重以致泄漏。——排出：更换聚胺脂油封（20）。一般情况，当泵运转3-6个月后，应更换一次轴封处的聚胺脂油封和轴套。c．填料烧坏。——原因：填料压盖压得过紧，引起发热。——排出：更换填料，压盖不能够压得过紧。d．叶轮或副叶轮转动不正常。——原因：叶轮反面和护板缝隙过小，或副叶轮与护板和填料盒之间缝隙过小。——排出：用螺栓（26）和螺母（27）调治缝隙。调治完后用手转动轴，各部位不得有阻卡、摩擦声，转动灵便。e．WJQ5″6J-10剪切泵一般故障及消除一览表5。WJQ5″6J-10剪切泵故障及消除（表

5）序故障

原因

消除方法号1轴功率过大

1、叶轮与泵壳端面或叶轮与衬套发生摩擦或副叶轮发生摩擦。2、泵在比设计点扬程低得多的条件下运转。3、填料压盖压得太紧。4、皮带打滑。

1、调整叶轮与泵壳端面及叶轮与衬套的缝隙，或副叶轮的间隙，除掉摩擦。2、检查所配工作机可否吻合要求，并关小排出阀门，使泵在设计点工作。3、重新调整压盖紧固力。4、张紧皮带（检查两皮带轮安装地址可否合适）。1、大块颗粒拥堵吸入管和叶轮流道。1、除掉拥堵物。扬程下降2、泵转速下降。2、使泵在额定转速下运转。23、叶轮磨损。3、更换叶轮。流量下降4、叶轮与泵壳端面缝隙过4、调整叶轮与泵壳端面的缝隙。大，泄漏增大。5、开大入口阀门。5、入口阀门开度太小。1、润滑油太多或太少。1、使油面保持在油标规定地址。3轴承过热2、油中有杂质。2、更换润滑油。3、轴承磨损。3、更换轴承。1、叶轮磨损不平衡。1、更换叶轮。2、更换轴承。泵运转产生2、轴承磨损。43、紧固各松动部位。振动和异常3、联接松动。噪声4、改进吸入条件，防范空气进入4、泵产生汽蚀。泵内。1、机封破坏。1、更换机封。2、轴套磨损严重。2、更换轴套。5密封泄漏严3、密封填料磨损过大。3、装填新的盘根环。重4、盘根环斜卷。4、重新组装盘根环。5、杂质、异物进入盘根环。5、除掉杂质、异物，冲刷密封件。6、盘根环斜口一致。6、重新按要求错位装填盘根环。IntroductionTheWJQ5″6J-10shearpumpgenerationisuniquelydesignedpumpforshearingpolymersandclays.Toimprovethedrillfluidproperties,thepolymersorclaysshouldbehighlyshearedbeforeaddingthemtothedrillfluidsystem.Ifnotsheared,thepolymersmaybejamthestrainerandwillresultinlosingamountofpolymerandincreasingdrillingcosts,andthelarge-sizesolidsinthedrillfluidwillhardenanddifficulttoclearawayaswell.TheWJQ5″6J-10shearpumphasprovenbestforapplyingthehighshearnecessarytohydratepolymersandclaysandtotheirbestproperties.UsingtheWJQ5″6J-10shearpumpreducesthebentoniteclayneededby33%ormoreandpolymerneededby15%ormore.Italsoimprovefluidlossandfiltercake,buildsgelstrength,andlowshearrateviscositytobetterholdupsolids.Withreliableshaftsealstructureandmoreconvenientinoperationandmaintenance,itcomesuptoadvancedworldstandardsinthesameproducts.2．PrincipleofoperationTheWJQ5″6J-10shearpumpadoptsasetofmechanicalsealfornoleakageatstuffingbox.Insidepumpisa300seriesstainlesssteelturbinecontaining44nozzles,fourscoopsandshearplate.Fiftypercentofthefluidisshearedtwiceeachtimethroughthepump.Thisturbineshearpumpismountedonaspecialbasewithbeltsandsheavestodrivepump,OSHAtypebeltguardanda75HP/102(55kw/75kw)1480RPMEXPLOSIONPROOFU/Lapprovedelectricmotor,460volts,3phase60cycle.Includedisaspecialhopper(ZHP150)withnozzlesizedforthisapplicationandonemudkitasapackageinordertobuildacompleteshearandhydrationsystem.Thepumpisdesignedtogivelongerservicelifethroughtheimprovedshaftseal.Therearemanyprinciplesofproperpumpinstallationandapplicationaswellasspecialconsiderationsforthepumpdesignwhich,iffollowed,willfurtherenhancetheperformanceofyourWJQ5″6J-10turbineshearpump.ThisdocumentwilldealwithbothgeneralandspecificrecommendationsforimprovedWJQ5″6J-10shearpumpperformanceinbothoilfieldandapplications.Warning!Thispumpcannotbeusedonactive

turbineindustrialmudsystemsinceitwillsheardrillsolidsandbarite.Thesesolidswillalsodamagepumpveryquickly.Theprincipleseesfigure1.Figure1PrinciplediagramofWJQ5″6J-10shearpumpFluidentersat“V”andispumpedparalleltotheshear“P”.Thechambersscoops50%ofthevolumebeingpumpedandjetsthatfluidthrough44nozzles“N”andimpactstheshearplate“P”atveryhighvelocityat“M”90degreestothefluidenteringthepump.Thetotalfluid“V”and“N”travelsdowntheshearplateto“T”wherethefluidisfurthershearedduetotheshapeandspeedoftheplatetip.3．ExplanationofmodelWJQ5″6J-10Turbinenominaldia.(Inches)SealformPumpinletdia.（Inches）Pumpoutletdia.（Inches）Turbineshearpump4．PerformanceTable(Table1)CapacitHeadSpeedEfficiencyNPSHPower(kw)Modely(m)(r/min)(%)(m)ShaftMotor(m3/h)powerpowerWJQ5″32228028346556JC-10155WJQ5″32228028346756JC-10155Performancecurve:WJQ56JC-105．StructuraldrawingFig.3WJQ5"×6"JC-10"Shearpumppartslist(Table2)ItemQty.PartNameItemQty.PartnameNo.No.11PumpCase274Nut21Impellerassembly284Washer31ShearPlate291Pressplateassembly41Strengtheningboard301O-Ring(55×51Protectingboard311Stuffing61StuffingBox321Pin71Rightcover331Shaftsleeve82Oil××12341Machineseal92Bearing(2313)351Reinforcesleeve101Oilholecover361CapNut111Pumpseat371Nut121BearingHousing381Washer131O-Ring(140×391FrontProtectingPlate142Bearing(7311AC/DB)151O-Ring(125×161Greasecup172LockNut182LockWasher191Leftcover201Oil××10213Shaft221Oilmark1PipeplugZG1/21Mudthrowingring1PipeplugZG3/44Bolt6．Guidetoinstallation,operationandmaintenanceoftheWJQ5″×6"JC-10"shearpump.ForewordThegeneralproblemstoinstallation,operationandmaintenanceoftheWJQ5″×6"J-10"shearpumpareintroducedintheguide(foryourinformationonly),pleasecontactourcompanyforinsolvableproblemsinthisguideandwillberepliedintime.EmphasesOperatethepumponlyintheperformancerangeandserviceforwhichitwasdesigned.Thispumpemploysmechanialsealasitsprimarysealandpackingsealasitssecondaryseal.Packingsealcanbecompactedonlywhenmechanicalsealisdisabled.Otherwise,thesealmaybedamaged.No-loadrunningtimeofthepumpcannotexceed5s.Thepumpmustrunundertheconditionofbeingfilledwithliquidslurry.Otherwise,themechanicalsealmaybedamaged.InstallationFlowdiagramofWJQ5″×6"J-10"shearpumpinstallationsystemTheshearpumpsystemisformedbyshearpump,mixinginstallationandtransportation,thepolymer/clayhydratorisformedbyaseparatecompartment.WJQ5″6JC-10ShearpumpSketchFlangeDimensions（inch）(Table3)FlangeDNDdb（mm）n-dDischarge51081/2268-7/8FlangeSuction6113/891/2268-7/8FlangeNote：DN-Flangeinsidedia.,D-Flangeoutsidedia.,boltcircle,b-Flangethickness,n-d—No.&sizeofboltholes.WJQ5″×6"JC－10"Shearpumpassemblylist(Table4)Item

Qty.

PartName

Item

Qty.

PartName11Base-plate116ClevisPinwithHead21ShearPump126SplitPin38Bolt132Stud48Washer144Nut54Nut154NarrowV-belt(15)61ElectricMotor161Driving(55kw/75KW)Pulley71Key1ExpandingSleeve1DrivePulley1HoodPumpinstallationThepumpshouldbelocatedneartheliquidsourcesothatthesuctionlinecanbeshortandreducelosses.Thefoundationshouldbesufficientlyrigidandsubstantialtoabsorbanyvibrationandsupportthebaseplateatallpoints.Thebaseplateshouldbeinstalledinalevelposition.PulleyinstallationA.Theaxesoftwopulleysmustbeparalleltoeachotherandtheendsurfaceerrorcannotexceed2mm.B.Thebeltsshouldbealignedandtightened.C.Theelectricmotormustbemountedstably.ConnectionofsuctionpipesA.Thesuctionlineshouldbeequaltoorlargerthanthepumpsuction.B.Thecapacityofacentrifugalpumpshouldneverbeadjustedbythrottlingthesuctionline,butapositiveshut-offvalveofatypetocauseminimalturbulenceshouldbeinstalledinthesuctionlinetopermittheclosingofthelineforremovalofthepumpforinspectionandmaintenance.C.Thesuctionlineshouldbedesignedtoeliminateanyairpockets.Thepipesshouldgraduallyslopedownwardstothesupplysourcetoeliminateairpockets.Pleaseuseavacuumpumporfootvalveforprimingifyouoperatethepumpthepumpundertheconditionofsuctionlift.D．Thesuctionlineshouldhaveastraightsectionintothepumpofalengthequivalenttoatleasttwotimesitsdiameter.E．Fortemporaryhook-upwhenflexiblehoseisused,anon-collapsinghoseisessentialsincethesuctionlinepressureisoftenbelowatmosphericpressure.Acollapsedsuctionlinewillresultinbelowaverageorcompletelossofflow.DischargepipesA．Apositiveshut-offvalveshouldbelocatedinthedischargepipetopermittheclosingthelineforremovalofthepumpforinspectionandmaintenance.B．Allpipes(includingsuctionpipes)shouldbeindependentlysupportedandaccuratelyaligned.Thepumpmustnotsupporttheweightofpipeorcompensateformisalignment.C．Ifoperatingconditionsarenotknownwithsufficientaccuracy,itwillbenecessarytoprovideathrottlevalveinthedischargelinetoensurethatthepumpoperatesatthedesignpoint.D．Ifthepumpisconnectedtoapressurizedsystem,itisimportanttoinstallacheckvalvebetweenthedischargeandthethrottlingvalve.Thecheckvalvewillpreventbackflowthroughthepump.Backflowmaycausetheimpellertobecomelooseontheshaft.Alooseimpellerwilllikelyleadtomechanicdamagedandfluidleakagebeneaththeshaftsleeve.OperationPreparationA．Pumprotatesfreelybyhand.B．Checkthepumprotatedirection,thecorrectdirectioncanbefoundbyanarrowonthecasing.C．Openthesuctionvalvefully.D．Pumpandsuctionlinefulloffluidforventingair.OperationforrunningStartthemotorafterfinishingallthepreparations.LubricationC．Bearingslubricationc．Addagoodgradeof10w30weightmotoroiluntilthemiddlelevelofdipstick.Donotoverfilltheoil.Highlevelsnaycausechurningandoverheatingofthebearings.Oilshouldbechangedevery90daysor1000hours.d．Underthespecialcondition,youmayselectagreasewhichcandissolvewiththemotoroilforlubrication.D．Stuffingboxlubricationc．Thestuffingboxmaybere-lubricatedwithgreaseasoftenasnecessarytopreventthepackingformoverheating.Itshouldbelubricatedatleastonceaday.d．Onfilling,greaseshouldbepumpedintotheboxwhileturningtheshaftuntilitcomesoutaroundthepackinggland.Maintenance（Referencetofigure3andtable2）B．Disassembly：n．Removethepulleykit.o．RemovethePressingboard（29）.p．Removethepumpcase（1）.q．Removeimpeller（2）,shearplate（3）andStrengtheningboard（4）：Screwtheleft-hangednuts36&37）offuseawrench(Restraintheshaftatthepulleyendtopreventrotation,Ifyoudonothaveawrench).Putablockofwoodagainsttheribsofturbineandhitthewoodenblockwithahammertowithdrawtheimpeller（2）.r．Removereinforcesleeve(35)andmechanicalseal34）.s．Withdrawprotectingboard（5）andstuffingbox6）.t．Removetheshaftsleeve（33）.Awedgemaybedrivenbetweentheendofthesleeveandtheshoulderoftheshafttofreethesleeve.u．Removetheblockingmudring（24）.v．Removeleftrightcover（7&19）.w．Pullthecompleteshaftandbearingsubassemblyfromtheframe.x．Removethelocknut(17)andthelock-washer(18).y．Removethebearingframeandbearings(14)fromtheshaft.Note:Impactingoftheentireshaftassemblyagainstaboardonthegroundwillremovethebearingassembly.z．Thebearing（9）maynowbepressedofftheshaft.Note:Apieceof3standardwallpipeslippedovertheshaftandimpactedagainsttheinnerraceofthebearingworksexceptionallywell.B．Inspectiong．Impeller：Replaceiferosion,corrosion,breakage.

theimpellerextreme

showsexcessivewear,orvaneh．Shaft:Checkforrun-outtoseethattheshafthasnotbeenbent.Ifrun-outexceeds,replacetheshaft.Bearingseatsandoilsealareamustbesmoothandfreeofscratchesorgrooves.Shaftthreadsmustbeingoodcondition.Replaceshaft,ifnecessary.i．Shaftsleeve:Sleevesurfaceinthestuffingboxmustbesmoothandfreeofgrooves.Ifgrooved,replaceit.j．Oilseal:Theremovedoilsealmustbereplaced.k．Ballbearings:Replaceifworn,loose,orroughandnoisywhenrotated.Newbearingsshouldnotbeunwrappeduntilreadyforusereplacementbearingsmustbeofthepropersizeandtypeassuppliedwiththeoriginalequipment.l．SealO-ring:ItisrecommendedthatallO-ringandgasketsealsshouldberemovedduringdisassemblyandreplaced.Inthosecasesonescanbereusediftheyarenotwornorotherwisedamaged.C．Assembly(referencetofigure3andtable2)g．Allpartsshouldbecleanbeforeassembly.ThisisespeciallyimportantforO-ringgrooves,threads,gasketsurfaces,bearingsandbearingssurfaces.Anyburrsshouldberemovedwithcrocuscloth.h．Firstlyslipthebearings(14)ontotheshaft.Thetwobearingsaretobemountedback-to-back(thatis,thesidesofthebearingswiththemanufacturer’snameandthebearingnumberareplacedtogether),withlock-washerinplacetightenlocknutwiththebevelpositionedagainstthebearingstightenthelocknutto346M/1Noftorque.Then,puttheshaftwithbearings(14)intotheframefromleftandslipthebearing(14)ontotheshaftfromrightofframe.i．Thesleevedareaoftheshaftmustbelightlycoatedwithanti-seizedcompoundbeforeinstallingthesleeve(33).j．Installtheimpeller.Theclearancebetweenthebackofimpellerandprotectingplateis。k．Withthepackingglandinposition,swingtheglandboltsintoplace.Initiallytightentheglandhardtocompressthepacking.Thenbackofftheglandboltsandretightenonlyfingertight.Caution:TightentheglandagainstthepackingfingertightonlyIfpackingisover-tighteneditmaybeburnedwhenthepumpisstarted.l

．Assemblycanbeproceededastheoppositesequenceofdisassembly.Thepumprotatesfreesbyhandafterassembly.Ifnotfree,adjusttheshaftassemblybylooseningortighteningthebolt(26)/nut(27).Note：Inspiteofadjusttheshafttoleftorright,thebolt(26)/nut(27)mustbetightentopreventtheshaftmoveafteradjustingcomplete.E．Failuresandshootingf．Thepackingsealleaksseriously,thepackingandshaftsleevesurfacehavebeenseriouslyworn.——Removethepacking.Bendawirewith90degreesandpullitdownthesleevesurfaceandrenewtheshaftsleeveifgrooved.Ifpackingisover-tighteneditmaybeexcessivelyworn.g．Thepolyurethanelipseal’s(20)excessiveerosionmayresultinexcessiveleakage.——Replaceit.Usuallyrenewthepolyurethanelipseallocatedattheshaftsealandshaftsleeveonceper3-6monthoperation.h．Packingburning——Reason:Over-tightenedpackingcauseoverheating.——Shooting:renewthepackingandproperlyloosenthepackingglandnuts.i．Unusualrotationofimpeller/auxiliaryimpeller——Reason:Theclearancebetweenthe

protectingplateandbackofimpelleristoolittle,andthatbetweentheauxiliaryimpellerand

protectingplate/stuffingboxaswell.——Shooting:A