Mosherflo ST Series User manual

JULY1,2010
ST‐SERIESI.O.M.
Installation,Operation,and
MaintenanceManual
WITHPARTSLIST
PUMPS
STSERIESPUMP
Mosherflo Pumps, LLC.
5902A FM 517 RD. E.
SAN LEON, TX 77539
281-800-PUMP (7867)

TABLEOFCONTENTS
INTRODUCTION………………………………………….PAGE3
SAFETY–SECTIONA…………………………………..PAGE4
INSTALLATION–SECTIONB……………………….PAGE5‐9
PumpDimensions……….PAGE5
PREINSTALLATIONINSPECTION…….PAGE5
POSITIONINGPUMP…………………….PAGE5‐6
Lifting…………………………..5
Mounting……………………..5‐6
Clearance……………………..6
SUCTION&DISCHARGEPIPING……PAGE6
Materials……………………..6
LineConfiguration………..6
ConnectionstoPump…..6
Gauges…………………………6
SUCTIONLINES…………………………….PAGE6‐7
Fittings…………………………6
Strainers……………………....6
Sealing………………………….6
SuctionLinesinSumps…..6‐7
SuctionLinePositioning..7
DISCHARGELINES…………………………PAGE7‐8
Siphoning……………………..7
Valves…………………………..7
BypassLines………………..7‐8
ALIGNMENT………………………………..PAGE8‐9
CoupledDrives…………….8‐9
V‐BeltDrives………………..9
OPERATION–SECTIONC…………………………PG.10‐12
PRIMING…………………………………….PAGE10
STARTING…………………………………..PAGE10
Rotation……………………..10
OPERATION………………………………..PG.10‐12
LinesWithaBypass…….10
LinesWithoutaBypass.11
Leakage………………………11
LiquidTemperature&
Overheating………………..11
StrainerCheck………………11
PumpVacuumCheck……11‐12
STOPPING…………………………………….PAGE12
ColdWeatherPreservation12
BEARINGTEMPERATURECHECK…...PAGE12
TROUBLESHOOTING–SECTIOND………………….PG.13‐14
PUMPMAINTENANCE&REPAIR–SECTIONE…PG.15‐22
PUMPANDSEALDISASSEMBLY&
REASSEMBLY…………………………………...PG.15‐21
BackCover&WearPlate
Removal…………………………..15
SuctionCheckValve
Removal…………………………..15‐16
RotatingAssyRemoval…….16
ImpellerRemoval……………..16
SealRemoval…………………….16
Shaft&BearingRemoval
&Disassembly……………………16‐17
Shaft&BearingReassembly
&Installation……………………..17‐18
SealInstallation………………….18
ImpellerInstallation…………..20
RotatingAssyInstallation…..20
SuctionCheckValve
Installation…………………………20‐21
BackCoverInstallation………21
FINALPUMPASSEMBLY……………………PAGE21
LUBRICATION…………………………………..PG.21‐22
SealAssembly………………….21
Bearings…………………………..21‐22
PowerSource…………………..22
FIGURES–SECTIONF…………………………………….PG.23‐26
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
INTRODUCTION
ThisInstallation,Operation,andMaintenancemanualis
designedtohelpyouachievethebestperformanceand
longestlifefromyourMosherflopump.
ThispumpisaTseries,semi‐openimpeller,self‐priming,
centrifugalmodelwithasuctioncheckvalve.Thepumpis
designedforhandlingmildindustrialcorrosives,residues,
andslurriescontaininglargeentrainedsolids.Thebasic
materialofconstructionisgrayiron,withductileiron
impellerandsteelwearingparts.
Ifthereareanyquestionsregardingthepumporits
applicationwhicharenotcoveredinthismanualorin
otherliteratureaccompanyingthisunit,pleasecontact
yourMosherflodistributor,orcontactR.B.MosherCo.,
Inc.at(281)339‐3382.
Forinformationortechnicalassistanceonthepower
source,contactthepowersourcemanufacturer’slocal
dealerorrepresentative.
Thefollowingareusedtoalertmaintenancepersonnelto
procedureswhichrequirespecialattention,tothosewhich
coulddamageequipment,andtothosewhichcouldbe
dangeroustopersonnel:

ImmediatehazardswhichWILLresultinseverepersonal
injuryordeath.Theseinstructionsdescribethe
procedurerequiredandtheinjurywhichwillresultfrom
failuretofollowtheprocedure.

HazardsorunsafepracticeswhichCOULDresultinsevere
personalinjuryordeath.Theseinstructionsdescribethe
procedurerequiredandtheinjurywhichwillresultfrom
failuretofollowtheprocedure.

NOTE:
Instructionstoaidininstallation,operation,and
maintenanceorwhichclarifyaprocedure.
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Page|3
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SAFETY–SECTIONA
ThesewarningapplytoTSeriesbasicpumps.R.B.
MosherCo.,Inc.hasnocontroloverorparticular
knowledgeofthepowersourcewhichwillbeused.Refer
tothemanualaccompanyingthepowersourcebefore
attemptingtobeginoperation.

Beforeattemptingtoopenorservicethepump:
1. Familiarizeyourselfwiththismanual.
2. Disconnectorlockoutthepowersourceto
ensurethatthepumpwillremaininoperative.
3. Allowthepumptocoolifoverheated.
4. Checkthetemperaturebeforeopeningany
covers,plates,orplugs.
5. Closethesuctionanddischargevalves.
6. Ventthepumpslowlyandcautiously.
7. Drainthepump.

Thispumpisdesignedtohandlemildindustrial
corrosives,residues,andslurriescontaininglarge
entrainedsolids.Donotattempttopumpvolatile,
corrosive,orflammablematerialswhichmaydamagethe
pumporendangerpersonnelasaresultofpumpfailure.


Afterthepumphasbeenpositioned,makecertainthat
thepumpandallpipingconnectionsaretight,properly
supportedandsecurebeforeoperation.


Donooperatethepumpwithouttheguardsinplaceover
therotatingparts.Exposedrotatingpartscancatch
clothing,fingers,ortools,causingsevereinjuryto
personnel.

Donotremoveplates,covers,gauges,pipeplugs,or
fittingfromanoverheatedpump.Vaporpressurewithin
thepumpcancausepartsbeingdisengagedtobeejected
withgreatforce.Allowthepumptocoolbefore
servicing.

Donotoperatethepumpagainstcloseddischargevalve
forlongperiodsoftime.Ifpumpoperatedagainsta
closeddischargevalve,pumpcomponentswill
deteriorate,andtheliquidcouldcometoaboil,build
pressure,andcausethepumpcasingtoruptureor
explode.
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Usetheliftingandmovingequipmentingoodrepairand
withadequatecapacitytopreventinjuriestopersonnel
ordamagetoequipment.Suctionanddischargehoses
andpipingmustberemovedfromthepumpbefore
lifting.
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Page|4
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INSTALLATION–SECTIONB
ReviewallSAFETYInformationinSectionA.
Sincepumpinstallationsareseldomidentical,thissection
offersonlygeneralrecommendationsandpractices
requiredtoinspect,position,andarrangethepumpand
piping.
Mostoftheinformationpertainstoastandardstaticlift
applicationwherethepumpispositionedabovethefree
levelofliquidtobepumped.
Ifinstalledinafloodedsuctionapplicationwherethe
liquidissuppliedtothepumpunderpressure,someofthe
informationsuchasmounting,lineconfiguration,and
primingmustbetailoredtothespecificapplication.Since
thepressuresuppliedtothepumpiscriticalto
performanceandsafety,besuretolimittheincoming
pressureto50%ofthemaximumpermissibleoperating
pressureasshownonthepumpperformancecurve.
Forfurtherassistance,contactyourMosherflodistributor
ortheR.B.MosherCo.,Inc.
PumpDimensions
SeeFigure1fortheapproximatephysicaldimensionsof
thispump.
PREINSTALLATIONINSPECTION
Thepumpassemblywasinspectedandtestedbefore
shipmentfromthefactory.Beforeinstallation,inspectthe
pumpfordamagewhichmayhaveoccurredduring
shipment.Checkasfollows:
a. Inspectthepumpforcracks,dents,damaged
threads,andotherobviousdamage.
b. Checkforandtightenattachinghardware.Since
gasketstendtoshrinkafterdrying.Checkfor
loosehardwareatmatingsurfaces.
c. Carefullyreadallwarningsandcautions
containedinthismanualoraffixedtothepump,
andperformalldutiesindicated.Notethe
directionofrotationindicatedonthepump.
Checkthatthepumpshaftrotates
counterclockwisewhenfacingtheimpeller.


Onlyoperatethispumpinthedirectionindicatedbythe
arrowonthepumpbodyandontheaccompanyingdecal.
RefertoROTATIONinOPERATION,SectionC.
d. Checklevelsandlubricateasnecessary.Referto
LUBRICATIONintheMAINTENANCEAND
REPAIRsectionofthismanualandperform
dutiesasinstructed.
e. Ifthepumpandpowersourcehavebeenstored
formorethan12months,someofthe
componentsorlubricantsmayhaveexceeded
theirmaximumshelflife.Thesemustbe
inspectedorreplacedtoensuremaximumpump
service.
Ifthemaximumshelflifehasbeenexceeded,orifanything
appearstobeabnormal,contactyourMosherflo
distributororR.B.MosherCo.,Inc.todeterminerepairor
updatingpolicy.Donotputthepumpintoserviceuntil
appropriateactionhasbeentaken.
POSITIONINGPUMP
Lifting
Usetheliftingequipmentwithacapacityofatleast2,000
lbs.(907.2kg).Thispumpweightsapproximately400lbs.
(181.4kg),notincludingtheweightofaccessoriesand
base.Customerinstalledequipmentsuchassuctionand
dischargepipingmustberemovedbeforeattemptingto
lift.

Thepumpassemblycanbeseriouslydamagedifthecable
orchainsusedtoliftandmovetheunitareimproperly
wrappedaroundthepump.
Mounting
Locatethepumpinanaccessibleplaceascloseaspractical
totheliquidbeingpumped.Levelmountingisessentialfor
properoperation.
Page|5
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Thepumpmayhavetobesupportedorshimmedto
provideforleveloperationortoeliminatevibration.
Clearance
Whenpositioningpump,allowaminimumclearanceof18
inches(457mm)infrontofthebackcovertopermit
removalofthecoverandeasyaccesstothepumpinterior.
SUCTIONANDDISCHARGEPIPING
Pumpperformanceisadverselyaffectedbyincreased
suctionlift,dischargeelevation,andfrictionlosses.See
theperformancecurveandoperatingrange.
Materials
Eitherpipeorhosemaybeusedforsuctionanddischarge
lines;however,thematerialsmustbecompatiblewiththe
liquidbeingpumped.Ifhoseisusedinsuctionlines,it
mustbetherigid‐wall,reinforcedtypetopreventcollapse
undersuction.Usingpipingcouplingsinsuctionisnot
recommended.
LineConfiguration
Keepsuctionanddischargelinesasstraightaspossibleto
minimizefrictionlosses.Makeminimumuseofelbows
andfittings,whichsubstantiallyincreasefrictionloss.If
elbowsarenecessary,usethelong‐radiustypetominimize
frictionloss.
ConnectionstoPump
Beforetighteningaconnectingflange,alignitexactlywith
thepumpport.Neverpullapipelineintoplaceby
tighteningtheflangeboltsand/orcouplings.
Linesnearthepumpmustbeindependentlysupportedto
avoidstrainonthepumpwhichcouldcauseexcessive
vibration,decreasedbearinglife,andincreasedshaftand
sealwear.Ifhose‐typelinesareused,theyshouldhave
adequatesupporttosecurethemwhenfilledwithliquid
andunderpressure.
Gauges
Mostpumpsaredrilledandtappedforinstallingdischarge
pressureandvacuumsuctiongauges.Ifthesegaugesare
desiredforpumpsthatarenottapped,drillandtapthe
suctionanddischargelinesnotlessthan18inches(457.2
mm)fromthesuctionandsicharg3eportsandinstallthe
lines.Installationclosertothepumpmayresultinerratic
readings.
SUCTIONLINES
Toavoidairpocketswhichcouldaffectpumppriming,the
suctionlinemustbeasshortanddirectaspossible.When
operationinvolvesasuctionlift,thelinemustalwaysslope
upwardtothepumpfromthesourceoftheliquidbeing
pumped;ifthelineslopesdowntothepumpatanypoint
alongthesuctionrun,airpocketswillbecreated.;
Fittings
Suctionlinesshouldbethesamesizeasthepumpinlet.If
reducersareusedinsuctionlines,theyshouldbethe
eccentrictype,andshouldbeinstalledwiththeflatpartof
thereducersuppermosttoavoidcreatingairpockets.
Valvesarenotnormallyusedinsuctionlines,butifavalve
isused,installitwiththestemhorizontaltoavoidair
pockets.
Strainers
Ifastrainerisfurnishedwiththepump,becertaintouse
it;anysphericalsolidswhichpassthroughastrainer
furnisehedwiththepumpwillallpassthroughthepump
itself.
Ifastrainerisnotfurnishedwiththepump,butisinstalled
bythepumpuser,makecertainthatthetotalareaofthe
openingsinthestrainerisatleastthreeorfourtimesthe
corsssectionofthesuctionline,andthattheopeningswill
notpermitpassageofsolidslargerthanthesolidshandling
capabilityofthepump.
Thispumpisdesignedtohandleupto2‐1/2inches
(63.5mm)diametersphericalsolids.
Sealing
Sinceevenaslightleakwillaffectpriming,headand
capacity,especiallywhenoperatingwithahighsuctionlift,
allconnectionsinthesuctionlineshouldbesealedwith
pipedopetoensureanairtightseal.Followthesealant
manufacturer’srecommendationswhenselectingand
applyingthepipedope.Thepipedopeshouldbe
compatiblewiththeliquidbeingpumped.
SuctionLinesinSumps
Ifasinglesuctionlineisinstalledinasump,itshouldbe
positionedawayfromthewallofthesumpatadistance
equalto1‐1/2timesthediameterofthesuctionline.
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Ifthereisaliquidflowfromanopenpipeintothesump,
theflowshouldbekeptawayfromthesuctioninlet
becausetheinflowwillcarryairdownintothesump,and
airenteringthesuctionlinewillreducepumpefficiency.
Ifitisnecessarytopositioninflowclosetothesuction
inlet,installabafflebetweentheinflowandthesuction
inletatadistanceof1‐1/2timesthediameterofthe
suctionpipe.Thebafflewillallowentrainedairtoescape
fromtheliquidbeforeitisdrawnintothesuctioninlet.
Iftwosuctionlinesareinstalledinasinglesump,theflow
pathsmayinteract,reducingtheefficiencyofoneorboth
pumps.Toavoidthis,positionthesuctioninletssothat
theyaresparatedbyadistanceequaltoaleast3timesthe
diameterofthesuctionpipe.
SuctionLinePositioning
Thedepthofthesubmergenceofthesuctionlineiscritical
toefficientpumpoperation.Figure2shows
recommendedminimumsubmergencevs.velocity.
NOTE
Thepipesubmergencerequiredmaybereducedby
installingastandardpipeincreaserfittingattheendofthe
suctionline.Thelargeropeningsizewillreducetheinlet
velocity.Calculatetherequiredsubmergenceusingthe
followingformulabasedontheincreasedopeningsize
(areaordiameter).SeeFigure2.
DISCHARGELINES
Siphoning
Donotterminatethedischargelineatalevellowerthan
thatoftheliquidbeingpumpedunlessasiphonbreakeris
usedintheline.Otherwise,asiphoningactioncausing
damagetothepumpcouldresult.
Valves
Ifathrottlingvalveisdesiredinthedischargeline,usea
valveaslargeasthelargestpipetominimizefriction
losses.Neverinstallathrottlingvalveinasuctionline.
Withhighdischargeheads,itisrecommendedthata
throttlingvalveandasystemcheckvalvebeinstalledin
thedischargelinetoprotectthepumpfromexcessive
shockpressureandreverserotationwhenitisstopped.


Iftheapplicationinvolvesahighdischargehead,gradually
closethedischargethrottlingvalvebeforestoppingthe
pump.
BypassLines
Self‐primingpumpsarenotaircompressors.Duringthe
primingcycle,airfromthesuctionlinemustbeventedto
atmosphereonthedischargeside.Ifthedischargelineis
open,thisairwillbeventedthroughthedischarge.
However,ifacheckvalvehasbeeninstalledinthe
dischargeline,thedischargesideofthepumpmustbe
openedtoatmosphericpressurethroughabypassline
installedbetweenthepumpdischargeandthecheck
valve.Aself‐primingcentrifugalpumpwillnotprimeif
thereissufficientstaticliquidheadtoholdthedischarge
checkvalveclosed.
NOTE
Thebypasslineshouldbesizedsothatitdoesnotaffect
pumpdischargecapacity;however,thebypasslineshould
beatleast1inch(25.4mm)indiametertominimizethe
chanceofplugging.
Inlowdischargeheadapplications(lessthan30ft.or9
meters),itisrecommendedthatthebypasslineberun
backtothewetwell,andlocated6inchesbelowthewater
levelorcut‐offpointofthelowlevelpump.Insome
installations,thisbypasslinemaybeterminatedwithasix‐
to‐eightfootlengthof1‐1/4inchI.D.smooth‐borehose;
airandliquidventedduringtheprimingprocesswillthen
agitatethehoseandbreakupanysolids,grease,orother
substanceslikelytocauseclogging.

Abypasslinethatisreturnedtoawetwellmustbe
securedagainstbeingdrawnintothepumpsuctioninlet.
Itisalsorecommendedthatpipeunionsbeinstalledat
each90degreeelbowinabypasslinetoeasedisassembly
andmaintenance.
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Inhighdischargeheadapplications(morethan30feet),
anexcessiveamountofliquidmaybebypassedandforced
backtothewetwellunderthefullworkingpressureofthe
pump;thiswillreduce.Thereforeitisrecommendedthat
anautomaticairreleasevalvebeinstalledinthebypass
line.
Iftheinstallationinvolvesafloodedsuctionsuchasa
below‐groundliftstation,apipeunionandmanualshut‐
offvalvemaybeinstalledinthebleedlinetoallowservice
ofthevalvewithoutshuttingdownthestation,andto
eliminatethepossibilityofflooding.Ifamunualshut‐off
valveisinstalledanywhereintheairreleasepiping,it
mustbeafull‐openingballtypevalvetopreventplugging
bysolids.

Ifmanualshut‐offvalveisinstalledinabypassline,it
mustnotbeleftclosedduringoperation.Aclosed
manualshut‐offvalvemaycauseapumpwhichhaslost
primetocontinuetooperatewithoutreachingprime,
causingdangerousoverheatingandpossibleexplosive
ruptureofthepumpcasing.Personnelcouldbeseverely
injured.
Allowanover‐heatedpumptocoolbeforeservicing.Do
notremoveplates,covers,gauges,orfittingsfroman
overheatedpump.Liquidwithinthepumpcanreach
boilingtemperatures,andvaporpressurewithinthe
pumpcancausepartsbeingdisengagedtobeejected
withgreatforce.Afterthepumpcools,draintheliquid
fromthepumpbyremovingcasingdrainplug.Use
cautionwhenremovingtheplugtopreventinjuryto
personnelfromhotliquid.
ALIGNMENT
Thealignmentofthepumpanditspowersourceiscritical
fortrouble‐freemechanicaloperation.Inaeitheraflexible
couplingorV‐beltdrivensystem,thedriverandpump
mustbemountedsothattheirshaftsarealignedwithand
paralleltoeachother.Itisimperativethatalignmentbe
checkedafterthepumpandpipingareinstalled,and
beforeoperation.


NOTE
CheckRotation,SectionC,beforefinalalignmentofthe
pump.
WhenmountedattheR.B.MosherCo.,Inc.factory,driver
andpumparealignedbeforeshipmen.Misalignmentwill
occurintransitandhandling.Pumpsmustbecheckedand
realignedbeforeoperation.Beforecheckingalignment,
tightenthefoundationbolts.Thepumpcasingfeetand
/orpedestalfeet,andthedrivermountingboltsshould
alsobetightlysecured.

Whencheckingalignment,disconnectthepowersource
toensurethatthepumpwillremaininoperative.

Adjustingthealignmentinonedirectionmayalterthe
alignmentinanotherdirection.Checkeachprocedure
afteralteringalignment.
CoupledDevices
Whenusingcouplings,theaxisofthepowersourcemust
bealignedtotheaxisofthepumpshaftinboththe
horizontalandverticalplanes.Mostcouplingsrequirea
specificgaporclearancebetweenthedrvingandthe
drivenshafts.Refertothecouplingmanufacturer’s
serviceliterature.
Alignspiderinserttypecouplingsbyusingcalipersto
measurethedimensionsonthecircumferenceofthe
outerendsofthecouplinghubevery90degrees.The
couplingisinalignmentwhenthehubendsarethesame
distanceapartatallpoints(seeFigure3A).
Alignnon‐spidertypecouplingsbyusingafeelergaugeor
tapergaugebetweenthecouplinghalvesevery90
degrees.Thecouplingisinalignmentwhenthehubsare
thesamedistanceapartatallpoints(seeFigure3B).
Checkparalleladjustmentbylayingastraightedgeacross
bothcouplingrimsatthetop,bottom,andside.Whenthe
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

straightedgerestsevenlyonbothhalvesofthecoupling,
thecouplingisinhorizontalparallelalignment.Ifthe
couplingismisaligned,useafeelergaugebetweenthe
couplingandthestraightedgetomeasuretomeasurethe
amountofmisalignment.
V‐BeltDrives
WhenusingV‐beltdrives,thepowersourceandthepump
mustbeparallel.Useastraightedgealongthesidesofthe
pulleystoensurethatthepulleysareproperlyaligned(see
Figure3C).Indrivesystemsusingtwoormorebelts,make
certainthatthebeltsareamatchedset;unmatchedsets
willcauseacceleratedbeltwear.
Tightenthebeltsinaccordancewiththebelt
manufacturer’sinstructions.Ifthebeltsaretooloose,
theywillslip;ifthebeltsaretootight,therewillbe
excessivepowerlossandpossiblebearingfailure.Select
pulleysthatwillmatchtheproperspeedration;over‐
speedingthepumpmaydamagebothpumpandpower
source.
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Donotoperatethepumpwithouttheguardinplaceover
therotatingparts.Exposedrotatingpartscancatch
clothing,fingers,ortools,causingsevereinjuryto
personnel.
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Page|9
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OPERATION–SECTIONC
ReviewallSAFETYinformationinSectionA.
Followtheinstructionsonalltags,labels,anddecals
attachedtothepump.

Thispumpisdesignedtohandlemildindustrial
corrosives,residues,andslurriescontaininglarge
entrainedsolids.Donoattempttopumpvolatile,
corrosive,orflammableliquidswhichmaydamagethe
pumporendangerpersonnelasaresultofpumpfailure.

Pumpspeedandoperatingconditionsmustbewithinthe
performancerangeshownonpageE‐1.
PRIMING
InstallthepumpandpipingasdescribedinINSTALLATION.
Makesurethatthepipingconnectionsaretight,andthat
thepumpissecurelymounted.Checkthatthepumpis
properlylubricated(seeLUBRIICATIONinMAINTENANCE
ANDREPAIR).
Thispumpisself‐priming,butthepumpshouldneverbe
operatedunlessthereisliquidinthepumpcasing.

Neveroperatethispumpunlessthereisliquidinthepump
casing.Thepumpwillnotprimewhendry.Extended
operationofadrypumpwilldestroythesealassembly.
Addliquidtothepumpcasingwhen:
1. Thepumpisbeingputintoserviceforthefirst
time.
2. Thepumphasbeenusedforalengthoftime.
3. Theliquidinthepumpcasinghasevaporated.
Oncethepumpcasinghasbeenfilled,thepumpwillprime
andreprimeasnecessary.

Afterfillingthepumpcasing,reinstallandtightenthefill
plug.Donotattempttooperatethepumpunlessall
connectingpipingissecurelyinstalled.Otherwise,liquid
inthepumpforcedoutunderpressurecouldcauseinjury
topersonnel.
Tofillthepump,removethepumpcasingfillcoverorfill
pluginthetopofthecasing,andaddcleanliquiduntilthe
casingisfilled.Replacethefillcoverorfillplugbefore
operatingthepump.
STARTING
Consulttheoperationsmanualfurnishedwiththepower
source.
Rotation
Thecorrectdirectionofpumprotationiscounterclockwise
whenfacingtheimpeller.Thepumpcouldbedamaged
andperformanceadverselyaffectedbyincorrectrotation.
Ifpumpperformanceisnotwithinthespecifiedlimits,
checkthedirectionofpowersourcerotationbefore
furthertroubleshooting.
Ifanelectricmotorisusedtodrivethepump,removeV‐
belts,couplings,orotherwisedisconnectthepumpfrom
themotorbeforecheckingmotorrotation.Operatethe
motorindependentlywhileobservingthedirectionofthe
motorshaft,orcoolingfan.
Ifrotationisincorrectonathree‐phasemotor,havea
qualifiedelectricianinterchangeanytwoofthethree
phasewirestochangedirection.Ifrotationisincorrecton
asingle‐phasemotor,consulttheliteraturesuppliedwith
themotorforspecificinstructions.
OPERATION
LinesWithaBypass
Ifanautomaticairreleasevalvehasbeeninstalled,the
valvewillautomaticallyopentoallowthepumptoprime,
andautomaticallycloseafterprimingiscomplete.
Page|10
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