FlowLine Switch-Tek LV41 Series User manual

RevAMN3012001of10

Switch‐Tek
SumpFloatLevelSwitches
LV41&LV42SeriesManual
LV41SeriesShown LV42SeriesShown


Flowline,Inc.
10500HumboltStreet
LosAlamitos,CA90720
Tel:(562)598‐3015
Fax:(562)431‐8507
www.flowline.com

2of10MN301200RevA
INTRODUCTION/TABLEOFCONTENTSStepOne
TheLV41SeriesSumpFloatisamercury‐freemechanicallyactuatedfloatingswitchintendedtoactivate
electricalcomponents,usuallypumps,tostartandstopautomatically.TheLV41seriesisperfectforsimple
levelcontrolofliquidsforfillingordrainingreservoirsandtanks.FloatswitchessuchastheLV41seriesare
themostuniversallyusedforpumpautomation,duetotheirhighreliability,economicalpricing,andeasy
installation.
TheLV42SeriesWasteWaterSumpLevelSwitchisamercury‐freeselfcounter‐weightedfloatingswitch
designedfortheautomationofpumps,specificallyfillinganddrainingoftanks,wells,andreservoirs.TheLV42
seriesbodyisfreeofanyirregularitiesmakingitidealforuseinsewagewaterapplications.Thepolypropylene
bodyconsistsofadoubleairtightchamberwithhigh‐pressuremeltedpolypropylenere‐injectionsealingto
ensureaperfectsealagainstinfiltration.

Counterweightsandcablehangersareavailabletosuitavarietyofmountingapplications.

TableofContents
Introduction....................................................................................................................................2
Specifications..................................................................................................................................3
Cautions..............................................................................................................................3
Dimensions......................................................................................................................................4
Safety.............................................................................................................................................5
Components....................................................................................................................................6
Installation......................................................................................................................................7
InstallationofCounterWeight...........................................................................................7
Wiring.............................................................................................................................................8
NCWiring............................................................................................................................8
NOWiring............................................................................................................................8
Maintenance...................................................................................................................................9
CleaningProcedure.............................................................................................................9
Warranty,ReturnsandLimitations...............................................................................................10

RevAMN3012003of10
SPECIFICATIONS StepTwo
Cautions
FLOWLINEmanufacturesawiderangeofliquidlevelswitchesandtechnologies.Whileeachoftheseswitches
aredesignedtooperateinawidevarietyofapplications,itistheuser'sresponsibilitytoselectaswitchmodel
thatisappropriatefortheapplication,installitproperly,performtestsoftheinstalledsystem,andmaintain
allcomponents.Thefailuretodosocouldresultinpropertydamageorseriousinjury.
1. Thepressure,temperatureandelectricallimitationsshownforthespecifiedlevelswitchesmustnotbe
exceeded.
2. Thepressuresandtemperaturesmusttakeintoconsiderationpossiblesurgesinthetemperatureand
pressureofthesystem.
3. Theliquidsusedmustbecompatiblewiththematerialsofconstruction.Specificationsofmaterialswill
begivenuponrequest.
4. Lifeexpectancyoftheswitchvarieswithapplications.
5. Ambienttemperaturechangescanaffectswitchsetpoints,sincespecificgravitiesofliquidsvarywith
temperature.
6. Levelswitcheshavebeendesignedtobeshockandvibrationresistant.Formaximumlife,bothshock
andvibrationshouldbeminimized.
7. Excessivecontaminantsinfluidmayinhibitfloatoperation,andoccasionalwipedownmaybe
necessary.
8. Levelswitchesmustnotbefieldrepaired.
9. Physicaldamagetoproductmayrenderproductunserviceable.
10. Installationinavesselmadefrommagneticmaterialsmayaffectoperation.

Service:LV41:Compatibleliquids.
LV42:CompatibleLiquids,slurries
WettedMaterials:Housing:Polypropylene
Cable:PVC
TemperatureLimits:LV41:32to122°F(0to50°C)
LV42:‐4to176°F(‐20to80°C)
PressureLimits:LV41:14.5psi(1bar)
LV42:29psi(2bar)
EnclosureRating:IP68
SwitchType:SPDT(NO/NC)
ElectricalRating:LV41:10(8)A@250VAC
LV42:10(3)A@250VAC
MountingOrientation:Vertical
ShippingWeight(housing):LV41:5.43oz(154g)
LV42:2.4lb(1100g)
ShippingWeight(cable):0.77oz(21.27g)perfoot
AgencyApprovals:CE

4of10MN301200RevA
DIMENSIONS StepThree
LV41SeriesTopView
LV41SeriesSideView
LV42SeriesTopView
LV42SeriesSideView

RevAMN3012005of10
SAFETYPRECAUTIONSStepFour
AboutthisManual:PLEASEREADTHEENTIREQUICKSTARTPRIORTOINSTALLINGORUSINGTHIS
PRODUCT.ThismanualincludesinformationontheSwitch‐TekLV41andLV42seriessumpfloatsfrom
FLOWLINE.Pleaserefertothepartnumberlocatedontheswitchlabeltoverifytheexactmodel
configuration,whichyouhavepurchased.
User’sResponsibilityforSafety:FLOWLINEmanufacturesabroadrangeoflevelsensingtechnologies.
Whileeachofthesesensorsisdesignedtooperateinawidevarietyofapplications,itistheuser’s
responsibilitytoselectasensormodelthatisappropriatefortheapplication,installitproperly,performtests
oftheinstalledsystem,andmaintainallcomponents.Thefailuretodosocouldresultinpropertydamageor
seriousinjury.
ProperInstallationandHandling:Onlyprofessionalstaffshouldinstalland/orrepairthisproduct.Always
checkforleakspriortosystemstart‐up.
WiringandElectrical:ThepowerswitchingthroughtheLV41andLV42seriesshouldneverexceed10(8)
A@250VAC.Electricalwiringoftheswitchshouldbeperformedinaccordancewithallapplicablenational,
state,andlocalcodes.
MaterialCompatibility:TheenclosureismadeofPolypropylene(PP)withacablemadeofpolyvinyl
chloride(PVC).Makesurethatthemodel,whichyouhaveselected,ischemicallycompatiblewiththe
applicationmedia.
Safety
Installationshouldbedonebyproperlytrainedstaff
Supplyvoltageshouldneverexceedamaximumof250VAC
Makesurethesensorischemicallycompatiblewithyourapplication
Designafail‐safesystemthataccommodatesthepossibilityofsensorand/orpowerfailure
THISSENSORSHOULDNOTBEUSEDINCLASSIFIEDHAZARDOUSENVIRONMENTS

MakeaFail‐SafeSystem:Designafail‐safesystemthataccommodatesthepossibilityofswitchand/or
powerfailure.FLOWLINErecommendstheuseofredundantbackupsystemsandalarmsinadditiontothe
primarysystem.
Flammable,ExplosiveorHazardousApplications:Switch‐Tekshouldnotbeusedwithinclassified
hazardousenvironments..

6of10MN301200RevA
COMPONENTSStepFive
Switch‐Teksumpfloatsareavailableintwodifferentconfigurationswithoptionsfordifferentlengthsofcable.
Dependingonthemodelpurchased,youmayormaynothavebeenshippedallthecomponentsshownbelow.
Float
oLV41‐720120’ofPVCcableSmallFloat
oLV41‐750150’ofPVCcableSmallFloat
oLV42‐720120’ofPVCcableLargeFloat
oLV42‐750150’ofPVCcableLargeFloat
QuickStartGuide
Options/Accessories
oCounterweight
Part#LV49‐7000
oCableHanger
Part#LV49‐9000
LV49‐7000
Shown
LV49‐9000
Shown

RevAMN3012007of10
INSTALLATIONStepFive
Thebasicoperatingprincipleofthesumpfloatisverysimple.Asfluidlevelrisesthefloatwillalsorise,
resultinginatiltofthemicro‐switchlocatedinsidethehousing.Thistiltwillgenerateasignalthatcanbe
usedtoactuateamotororsignalanindicatoralarm.Toensuretheproperfunctionofthesumpfloat,itis
necessarytosecuretheelectriccableinsidethetankorwell.Thelengthofthecablemeasuredbetweenthe
fixturepoint(seebelow)andthebodyofthefloatdeterminesthetotalextensionofthefloat.Thisresultsin
thedistancebetweenthepumpstoppingandstartinglevel.Thisdistanceshouldbenolessthan6in(15cm).
Itisessentialtoensurethattherearenoobstructionsinthesumpfloatsoperationalareabeforeoperation.
Warning:Duringoperation,adjustmentstothesumpfloatcablemustnotbemadeunderany
circumstancesduetothefactthatanyunwantedcableconnectionsmadewhilethesumpfloatis
immersedinwatercanleadtoelectricshock.
Therearetwoinstallationoptionsforthissumpfloat.Onemethodistofixthecableofthefloattothe
reservoirorcontainerwiththeuseofasmallclamp.AnothertechniquewouldbetoattachtheLV49‐7000
counterweighttothefloat’scableadesireddistancebetweenthehighestandlowestleveldesired.
Note:Withtheuseofthecounterweight,thelengthofcablebetweenthefloatandfixedpoint(starting
andstoppingindication)canbefreelyadjusted.
Note:TheLV42seriesisselfcounterweightedandcanbeusedwithouttheneedofadditional
counterweight,clamp,orbracket.Thepreviousaremeanstosimplifyinstallationandaidinorganizingthe
useofmultiplefloatswitches.
FillOperation‐ShownwithCounterWeightEmptyOperation‐ShownwithCounterWeight
INSTALLATIONOFCOUNTERWEIGHT
Forcorrectcounterweightinstallation,refertothefollowingprocedureaswellastheillustration.
1. Insertthecableintothecounterweight,turningit.Thiswill
resultinthedetachmentoftheplasticringinsertedinthe
mouth(ifnecessaryuseascrewdrivertoaidinthe
detachmentofthering).Placetheringatthepointonthe
cablewherethecounterweightistobeattached.
2. Attachthecounterweightontheringbyturningitandusing
moderatepressure.(Counterweightsoldseparately).

 

8of10MN301200RevA
WIRINGStepFive
ELECTRICALCONNECTIONS:
TheLV41andLV42seriesfeatureaSPDTrelaycontact.SPDT,singlepoledoublethrowallowsforoperationof
bothincreasinganddecreasinglevel,dependingontheconnectionsmadebetweentheterminalsofthe
micro‐switchandthecable.SPDT,whichisathree‐conductorcable,hasoneleadthatiscommon,onethatis
normallyopen(NO),andtheotherthatisnormallyclosed(NC).Fortheproperconnectionsofthese
conductorspleaserefertothewiringdiagramsbelow.
NCWiring:

TheNormallyClosed(NC)wiringistypicallyusedforafillingoperation.Thecontactwillcloseatalowlevel
andopenatahighlevel.
NOWiring:

TheNormallyOpen(NO)wiringistypicallyusedforanemptyingoperation.Thecontactwillcloseatahigh
levelandopenatalowlevel.
Warning:Whenmakingtheconnectionsdescribedabove,ensurethatthemaximummotor
powerdoesnotexceedthevaluesindicatedonthelevelswitch.Thepowersupplycableis
animportantpartofthesumpfloat.Shouldthecableappeartobedamaged,discontinue
useimmediatelyandproceedtoreplacetheunit.Theterminalusedmustalsobeprotected
againstaccidentalbreak.Also,correctlyinsulateanywirenotinuse.

RevAMN3012009of10
MAINTENANCEStepSix
Maintenanceshouldconsistofinspectiontoseethatthesumpfloatisfreetomoveandnotcoatedwithany
substance,whichwouldchangeitsweightorvolumesignificantly.Ifthisoccurs,thesumpfloatshouldbe
cleaned.Thisiseasilyaccomplishedwithoutdisturbingtheinstallation.Dentsornicksonthefloatareusually
ofnoconsequencetooperation.
Cleaningprocedure:
1. Power:Makesurethatallpowertothesumpfloat,controllerand/orpowersupplyiscompletely
disconnected.
2. Floatremoval:Ifnecessary,makesurethatthetankisdrainedwellbelowthefloatpriortoremoval.
Carefully,removethefloatfromtheinstallation.
3. Cleaningthefloat:Usingasoftbristlebrushandmilddetergent,carefullywashtheswitch.Donotuse
harshabrasivessuchassteelwoolorsandpaper,whichmightdamagethesurfaceofthesensor.Do
notuseincompatiblesolvents,whichmaydamagethesensor'sPPbodyorPVCcable.Takeparticular
caretoremoveanyscalingfromthefloatbodyandmakesurethatitisfreetomove.
4. Floatinstallation:FollowtheappropriatestepsofinstallationasoutlinedintheInstallationsectionof
thismanual.


10of10MN301200RevA
WARRANTY,RETURNSANDLIMITAITONSStepSeven
Forcompleteproductdocumentation,videotraining,andtechnicalsupport,gotowww.flowline.com.
Forphonesupport,call562‐598‐3015from8amto5pmPST,Mon‐Fri.
(PleasemakesureyouhavethePartandSerialnumberavailable.)
Warranty
Flowlinewarrantstotheoriginalpurchaserofitsproductsthatsuchproductswillbefreefromdefectsin
materialandworkmanshipundernormaluseandserviceinaccordancewithinstructionsfurnishedbyFlowline
foraperiod,whichisequaltotheshorterofoneyearfromthedateofpurchaseofsuchproductsortwoyears
fromthedateofmanufactureofsuchproducts.Flowline'sobligationunderthiswarrantyissolelyand
exclusivelylimitedtotherepairorreplacement,atFlowline'soption,oftheproductsorcomponents,which
Flowline'sexaminationdeterminestoitssatisfactiontobedefectiveinmaterialorworkmanshipwithinthe
warrantyperiod.Flowlinemustbenotifiedpursuanttotheinstructionsbelowofanyclaimunderthis
warrantywithinthirty(30)daysofanyclaimedlackofconformityoftheproduct.Anyproductrepairedor
replacedunderthiswarrantywillbewarrantedonlyfortheremainderoftheoriginalwarrantyperiod.
Returns
ProductscannotbereturnedtoFlowlinewithoutFlowline'spriorauthorization.Toreturnaproductthatis
thoughttobedefective,gotowww.flowline.com,andsubmitacustomerreturn(MRA)requestformand
followtheinstructionstherein.Allwarrantyandnon‐warrantyproductreturnstoFlowlinemustbeshipped
prepaidandinsured.Flowlinewillnotberesponsibleforanyproductslostordamagedinshipment.
Limitations
Thiswarrantydoesnotapplytoproductswhich:1)arebeyondthewarrantyperiodorareproductsforwhich
theoriginalpurchaserdoesnotfollowthewarrantyproceduresoutlinedabove;2)havebeensubjectedto
electrical,mechanicalorchemicaldamageduetoimproper,accidentalornegligentuse;3)havebeen
modifiedoraltered;4)anyoneotherthanservicepersonnelauthorizedbyFlowlinehaveattemptedtorepair;
5)havebeeninvolvedinaccidentsornaturaldisasters;or6)aredamagedduringreturnshipmenttoFlowline.
FlowlinereservestherighttounilaterallywaivethiswarrantyanddisposeofanyproductreturnedtoFlowline
where:1)thereisevidenceofapotentiallyhazardousmaterialpresentwiththeproduct;or2)theproducthas
remainedunclaimedatFlowlineformorethan30daysafterFlowlinehasdutifullyrequesteddisposition.This
warrantycontainsthesoleexpresswarrantymadebyFlowlineinconnectionwithitsproducts.ALLIMPLIED
WARRANTIES,INCLUDINGWITHOUTLIMITATION,THEWARRANTIESOFMERCHANTABILITYANDFITNESSFOR
APARTICULARPURPOSE,AREEXPRESSLYDISCLAIMED.Theremediesofrepairorreplacementasstatedabove
aretheexclusiveremediesforthebreachofthiswarranty.INNOEVENTSHALLFLOWLINEBELIABLEFORANY
INCIDENTALORCONSEQUENTIALDAMAGESOFANYKINDINCLUDINGPERSONALORREALPROPERTYORFOR
INJURYTOANYPERSON.THISWARRANTYCONSTITUTESTHEFINAL,COMPLETEANDEXCLUSIVESTATEMENT
OFWARRANTYTERMSANDNOPERSONISAUTHORIZEDTOMAKEANYOTHERWARRANTIESOR
REPRESENTATIONSONBEHALFOFFLOWLINE.Thiswarrantywillbeinterpretedpursuanttothelawsofthe
StateofCalifornia.Ifanyportionofthiswarrantyisheldtobeinvalidorunenforceableforanyreason,such
findingwillnotinvalidateanyotherprovisionofthiswarranty.