MYERS SX50 Manuale

23833A465 03/10

SX50/SX50H

Sump Pumps

Used in Hazardous Locations Class 1, Division 1, Group D

Installation and Service Manual

GENERAL

 1. Mostaccidentscanbeavoidedbyusing

  COMMON SENSE.

 2. Readtheoperationandmaintenance

instructionsmanualsuppliedwiththepump.

 3. Donotwearlooseclothingthatcanbecome

entangledintheimpellerorothermoving

parts.

 4. Thispumpisdesignedtohandlematerialsthat

couldcauseillnessordiseasethroughdirect

exposure.Wearadequateprotectiveclothing

whenworkingonthepumporpiping.

ELECTRICAL

 5. Toreducetheriskofelectricalshock,pump

mustbeproperlygroundedinaccordancewith

theNationalElectricCodeandallapplicable

stateandlocalcodesandordinances.

 6. Toreduceriskofelectricalshock,disconnect

thepumpfromthepowersourcebefore

  handlingorservicing.

 7. Anywiringtobedoneonpumpsshouldbe

donebyaqualiedelectrician.

 8. Neveroperateapumpwithapowercordthat

hasfrayedorbrittleinsulation.

 9. Neverletcordsorplugslieinwater.

10. Neverhandleconnectedpowercordswith

  wethands.

PUMPS

11. Pumpbuildsupheatandpressureduring

operation;allowtimeforpumptocoolbefore

handlingorservicing.

12. Onlyqualiedpersonnelshouldinstall,

 operateorrepairpump.

13. Keepclearofsuctionanddischargeopenings.

DONOTinsertngersinpumpwithpower

connected.

14. Donotpumphazardousmaterialnot

recommendedforpump(ammable,

 caustic,etc.).

15. Makesureliftinghandlesaresecurely

 fastenedeachtimebeforelifting.

16. Donotliftpumpbythepowercord.

17. Donotexceedmanufacturer's

recommendationformaximumperformance,

asthiscouldcausethemotortooverheat.

18. Securethepumpinitsoperatingpositionsoit

cannottipover,fallorslide.

19. Keephandsandfeetawayfromimpellerwhen

powerisconnected.

20. Submersiblesumppumpsarenotapproved

foruseinswimmingpools,recreationalwater

installations,decorativefountainsorany

installationwherehumancontactwiththe

pumpeduidiscommon.

21. Donotoperatepumpwithoutsafetydevices

 inplace.

22. Forhazardouslocations,usepumpsthatare

listedandclassiedforsuchlocations.

IMPORTANT! Myersisnotresponsiblefor

losses,injuryordeathresultingfromafailure

toobservethesesafetyprecautions,misuseor

abuseofpumpsorequipment.

GENERALINFORMATION

PumpModels:Theseinstructionscoverthe

installationandserviceoftheMyersSX50and

SX50Hseriessubmersiblesumppumps.The

motorsareCSAlistedforhazardoussewage

locationsClass1,Div.1,GroupD.

MotorHP&Voltages:TheSX50/SX50Hsump

pumpsareofferedinsingleandthreephase.

Voltageswillvaryaccordingtotheapplicationand

canbeseeninthetablesinthismanual.

ElectricalControls:Allofthesepumpmodelsmust

beusedwithacontrolpanel.Myersbuiltcontrol

panelsaredesignedtosupplythecorrectelectrical

controls,motorstartingequipmentandinclude

thecircuitryformoistureandheatsensors.Itis

recommendedthataMyersbuiltcontrolpanelbe

usedsothatallwarrantiesapply.

GeneralConstruction:TheSX50/SX50Hmotor

constructionisdesignedtomeetCSArequirements

forClass1,GroupDsewageapplications.These

modelsareapprovedandnameplatedwithaCSA

lenumber.Acrosssectionalviewoftheinternal

workingsofthepumpscanbeseenonpages7and

8.Themotorchamberandsealchamberarelled

withahighdielectrictypeoilforimprovedlubrication

andheattransferofthebearingsandmotor.Since

thebearingshavebeendesignedfor50,000hours

oflife,theoilshouldneverrequirereplacement

23833A465 2

WARNING!IMPORTANTSAFETYINSTRUCTIONS!READCAREFULLYBEFORE

INSTALLATION.Thismanualcontainsimportantinformationforthesafeuseofthis

product.Readthismanualcompletelybeforeusingthisproductandrefertoitoften

forcontinuedsafeproductuse.DONOTTHROWAWAYORLOSETHISMANUAL.

Keepitinasafeplacesothatyoumayrefertoitoften.

undernormaloperatingconditions.Anairspace

abovetheoillevelinboththesealandmotor

chambersisprovidedtoallowfortheexpansionof

theoilwhenatoperatingtemperature.Thepower

andcontrollinesaresealedandstrainrelievedon

theoutsideentrancewithastandardcordgrip,and

internallythroughtheuseofadielectricpottingresin

surroundingtheelectricalwires.

Internalconnectionwiringdiagramsareshownin

Figure8.Allofthepumpfastenersandshaftsare

madefromcorrosionresistantstainlesssteel,while

thepumpcastingsaremadeofASTMA-48Class

30castiron,andthemultivanevorteximpellersare

madefromClass20castiron.

GeneralInstallation:Variouscongurationsand

methodsofplumbingthisseriesofsumppumpsmay

beused.

Note:IftheSX50/SX50Hhazardouslocation

pumpsareusedinconjunctionwitharaillift-out

system,itmustbeaULorCSAlistednonsparking

systemforhazardouslocations.

IMPORTANT:Ifthefollowingguidelinesare

notfollowed,theCSAhazardouslocationlisting

isvoid.

Thesepumpsaretobeusedforhandlingseptictank

efuent,sewage,andstormwateronly.Do notuse

inotherhazardouslocations.Thesemotorsmust

berepairedandservicedonlyataMyersauthorized

servicecenterorattheMyersfactory.Any

unauthorizedeldrepairvoidswarrantyandthe

hazardouslocationrating.

CAUTION:Afterthepumpisinstalledand

sewagehasenteredthebasinthereisDanger.

Sewagewatergivesoffmethaneandhydrogen

suldegases,whicharepoisonous.Never

enterawetwellunlessthecoverisopenfora

sufcientperiodoftimetoallowfreshairinto

thebasin.Itisrecommendedthatamanin

thebasinhaveaharnessonwitharopetothe

surface,sothathecanbepulledoutincaseof

asphyxiation.ItisforthisreasonthatMyers

recommendsusingtheraillift-outsystemsothat

noserviceisrequiredinsidethebasin.

Motor:Eachmotorisprovidedwithheatsensor

thermostatsattacheddirectlytothemotorwindings.

Thethermostatsopenifthemotorwindingssee

excessiveheatand,inturn,openthemotor

contactorinthecontrolpanel,breakingthepower

tothepump.Whenthemotorisstoppedduetoan

overheatcondition,itwillnotstartuntilthemotorhas

cooledandtheheatsensorresetbuttonismanually

pushedonthefrontoftheMyerscontrolpanel.

ThiscircuitryisprovidedintheMyerscontrolpanel

designs.

TheSX50/SX50Hpumpsareequippedwith

internalthermostats.TheSX50/SX50Hmodels

aredesignedtomeetClassBheatriseof266°F

(130°C).

Note:Failuretousepropercircuitryandtoconnect

themotoroverheatprotectioninthecontrolpanel

wouldnegateallwarrantiesandCSAListings.

MotorSealFailureWarning:Thesealchamberis

oillledandprovidedwithmoisturesensingprobes

todetectwaterleakagethroughthelowershaftseal.

Theprobescanalsodetectmoisturepresentinthe

uppermotorhousing.

Thepresenceofwaterenergizesaredsealleak

warninglightatthecontrolpanel.Thisisawarning

lightonly,anddoesnotstopthemotor.Itindicates

aleakhasoccurredandthepumpmustberepaired.

Normally,thisindicatestheoutboardsealhas

leaked.Allowingtheunittooperatetoolongafter

thewarningcouldcauseuppersealleakagealong

withmotorfailure.

Theresistanceacrossthemoisturesensing(seal

failure)probesshouldbecheckedafteraseal

leakwarninglighthaslit.Thiscanbedoneby

disconnectingtheredandorangecontrolwiresfrom

thecontrolpanel,andmeasuringtheresistancewith

anohmmeterbetweenthewires.TheSX50/SX50H

readingshouldbeabove30,000ohms.Ifthe

measuredvaluesarebelowthoseindicatedabove,

thepumpmayhavealowersealfailureand

requireservice.

OntheMyerscontrolpanelsthesealleaktestswitch

teststhesealleakcircuitcontinuity.Whenpushed

thesealleaktestbulbshouldlight.Ifthetestbulb

doesnotlightitmeanseitherthewiringcircuitryto

thesealleakprobeshavebeenbrokenorthebulb

hasburnedout.

Note:Myersbuiltcontrolpanelssupplythecorrect

circuitryformoistureandheatsensorconnections.

Failuretoinstallthecorrectcircuitrywithproper

connectionwouldnegatewarrantyandCSAListing.

SeeFigure7.

MotorPowerCord,ControlCordandCord

CapAssembly:Eachmotorpowercordhas4

conductors–white,black,redandgreen.Fora

singlephasemotortheblackisconnectedtothe

commonlead,thewhiteisconnectedtothemain

lead,whiletheredisconnectedtothestartcircuitry,

andthegreenisattachedtoagoodground.The

23833A4653

rotationofasinglephasepumpissetproperlyatthe

factory.

Forthreephasemotor,theblack,white,andred

conductorsarepowerleadsandthegreenisground.

Note:Rotationshouldbeclockwisewhenobserved

fromthetopofthepump.Thiscanbecheckedby

notingwhichdirectionthepumptorquesuponinitial

starting.Aproperlyrotatingpumpwilltorque

counterclockwiseuponstart.

ALWAYSCHECKTHREEPHASEPUMPS

FORPROPERROTATIONBEFORE

INSTALLINGPUMPS.

Thecontrolcablehas5conductors–black,white,

red,orangeandgreen.Whiteandblackconnect

totheheatsensorterminalsinthecontrolpanels;

redandorangeconnecttothesealfailureterminals

inthecontrolpanel;andthegreenconnectstothe

groundinthecontrolpanel.

Thecordcapisepoxypotted.Thisallowsthecord

cap,withcords,toberemovedfromthemotor.With

thisarrangement,thecordscanbepermanently

installedinasealedttinginthesump.This

shouldbeanapprovedjunctionboxforthespecic

hazardouslocations.The control and power

cables cannot be spliced!

Note:Eachcablehasagreengroundwireand

mustbeproperlygroundedpertheNationalElectric

Codeandlocalcodes.

ElectricalMotorControls:Allelectricalcontrols

andmotorstartingequipmentshouldbeasspecied

intheseinstructions.Consultfactoryforany

acceptablealternatives.Forhazardouslocationsthe

controlsandcontrolpanelmustbeinstalledoutside

thehazardousarea.Onlyapprovedcontrolsthatare

intrinsicallysafemaybeusedwiththesepumps.

JunctionBox:Ifajunctionboxisusedina

hazardouslocation,itmustbeanapprovedtype

withapprovedcordconnectors.Wiresfromthe

junctionboxmustpassthroughanapprovedseal

connectorforhazardouslocations.

LevelSensingControls:Intrinsicallysafe-type

oatcontrolsarerecommendedforallapplications

andrequiredforhazardouslocations.Anintrinsically

safecontrolpanelrelaywilllimitthecurrentand

voltagetothelevelcontrols.AMyerscontrolpanel

canbesuppliedwiththistypecircuitry.

Theoatlevelcontrolsmaintainthebasinsewage

waterlevelbycontrollingpumpturn-onand

turn-offlevels.

1. Thelowerturn-offcontrolshouldbesetsothat

thepumpstopswiththewatercoveringtheentire

motorhousing.Consultthefactoryforany

 settingsbelowthispoint.

2. Theupperturn-oncontrolshouldbesetabove

thelowerturn-offcontrol.Theexactheight

 betweenthetwocontrolsisdeterminedbythe

numberofpumpstartsdesiredandthedepth

ofthebasin.Amaximumof10startsperhour

shouldnotbeexceeded.

3. Theoverridecontrolissetataspeciedheight

abovetheupperturn-oncontrol.

4. Thealarmcontrolissetabout6"to12"abovethe

overridecontrol.

5. Nocontrolshouldbesetabovetheinletinvert.

ElectricalConnections:Allelectricalwiringmust

beinaccordancewithlocalcodeandonlyqualied

electriciansshouldmaketheinstallations.Complete

wiringdiagramsareincludedforuseinmakingthe

installation.Allwiresshouldbecheckedforshorts

togroundwithanohmmeterormeggerafterthe

connectionsaremade.Thisisimportant,asone

groundedwirecancausefailureofthepump,control

panelorpersonalinjury.

Pump:Theuidendofthepumpiseldserviceable

andcanbedisassembledincaseofwear,damage,

pluggingoroutboardsealfailure.Thefollowingwill

describethedisassemblyandreassemblyprocess.

WARNING!Disconnectpumpfrompowersource

beforeservicingorhandling.

Disassembly

1. Withthepumplocatedinasecureplace,remove

theboltsfasteningthesealhousingtothevolute.

Themotorandimpellercannowberemovedas

 aunit.

2. Laytheunitdownonitsside.Ifthelowersealis

toberemoved,itisrecommendedthattheoilin

thesealchamberbedrained.Thiscanbedone

byremovingthelowersealchamberplugand

drainingtheoilintoaholdingcontainer.

23833A465 4

3. Usingaproperwrench,theimpellerretaining

nutmustberemoved.Thismayrequireapiece

ofwoodplacedbetweenthevanestokeepthe

impellerfromrotatingwhileremovingthenut.

 Loctite®isusedonthisboltandheatingto

450–500°Fmayalsoberequiredtoloosen.The

impellerismountedonathreadedshaft.To

removeimpeller,rotateimpellerwithonehand,

whileholdingpumpshaftwithscrewdriver.

4. Ifthelowersealneedstoberemoved,rst

removethecompressionspringthatrides

betweentheimpellerandthesealassembly.

Nexttakeapairofscrewdriversandremove

thecompressionringthatsurroundstherubber

bellowsontherotatingportionoftheseal

assembly.Againusingthescrewdrivers,prythe

remainingportionoftherotatingsealassembly

offtheshaft.Theceramicstationarycanbe

removedbyplacingascrewdriverbetweenthe

rubberandtheceramicface,andthenprying,

workingaroundtheentirediameter.Note,

thesepartsshouldbediscardedandanewseal

assemblyinstalled.

5. Iftheoilinthesealchamberwasdrained,

examinethecontentstodetermineiftheupper

sealhasbeendamaged.Signsofgritorother

abrasivematerialmayindicatethattheupper

sealhasalsobeendamaged.Pressurizingthe

motorhousingassemblybetween7and10psi

andobservinganydropinpressurewillindicateif

theuppersealisfunctioningproperly.

Note:UppersealrepairsmustbedoneataMyers

authorizedservicecenterorattheMyersfactory.

Anyunauthorizedeldrepairvoidswarrantyandthe

CSAlisting.

Reassembly

1. Removetheceramicportionofthenewsealfrom

thepackage.Brushnewdielectricoilaroundthe

rubberportionofthestationaryassemblyandinto

thepocketinthesealhousing.Note,keepthe

oiloffthesealface.Withoutscratchingtheseal

face,presstheceramicstationaryportionintothe

sealhousing.ApieceofPVCpipethattsonto

thefaceofthesealworkswellforinstallation.

Withcleancloth,lightlywipethefaceoftheseal

surfacetomakesureitisdirtfree.Removethe

rotatingportionofthesealfromthepackageand

lubricatetheinsidediameteroftherubberbellows

andtheoutsidediameteroftheshaft.Placethe

sealovertheshaft.Evenlypressonthebody

oftherotationalassemblyandslideitdownthe

shaftuntilthesealfacesmeet.APVCpipewith

theinsidediameterslightlylargerthantheshaft

diametercanworkwelltopresstherotational

assemblyintoposition.Oncethesealassembly

isinposition,placethespringovertheregisteron

therotationalportionoftheseal.

2. Threadtheimpellerontotheshaft,makingsure

thatthesealspringisregisteredproperlyonto

thebacksideoftheimpeller.Placetheproper

Loctiteuidontheimpellerretainingnut.Tighten

nutonshaft.

3. Fillthesealchamberwithnewdielectricoil.An

airgapof10–15%volumemustbeleftforthe

expansionoftheoilwhenitisatoperating

 temperature.

4. Themotorandimpellerassemblycanbeinstalled

intothevolute,makingsurethattheunitsare

alignedproperly.Installthevoluteretainingbolts

andtighten.

5. Airtendstotrapinthepumpcasewhenwater

risesinthesumporwhenthepumpislowered

intothewaterafterservice.Toventoffthisaira

smallholeisdrilledintothevolutecasting.Be

sure this vent hole is clean after any service

work on pump.Airventingisnotaproblemafter

initialstart.

23833A4655

SX50DIMENSIONS

[Dimensionsinmm]

SX50HDIMENSIONS

[Dimensionsinmm]

FIG.1

23833A465 6

SX50PUMPPARTS

FIG.2

23833A4657

SX50HPUMPPARTS

FIG.3

23833A465 8

SX50/SX50HPARTSLIST

23833A4659

Ref. Description Qty. SX50 SX50H

1 CAP, CORD 1 22407C602 22407C602

2 CONNECTOR 7 12762A001 12762A001

3 TUBE, PLASTIC x 1-1/4" LG. 2 10649A102 10649A102

4 SCREW, CAP 5/16 x 1-1/4" LG. 8 19100A012 19100A012

5 O-RING, 4-1/2" x 4-1/4" x 1/8" 1 05876A122 05876A122

6 CAP, UPPER BEARING 1 21570B100X 21570B100X

7 O-RING, 4-7/8" x 4-5/8" x 1/8" 1 05876A123 05876A123

8 PLUG, PIPE 1/4" NPT 2 05022A054 05022A054

9 SCREW, MACH. #10 x 1/2" LG. 1 05434A034 05434A034

10 WASHER, LOCK 1 06107A015 06107A015

11 SCREW, MACH. 5/16 x 1" LG. (SX50) 2 07597A017

11 SCREW, MACH. 5/15 x 1" LG. (SX50H) 6 07597A017

12 HOUSING W/STATOR (1Ø) 1 21571D150K 21571D150K

HOUSING W/STATOR (3Ø) 230/460V 1 21571D152K 21571D152K

HOUSING, MOTOR 21571D100X 21571D100X

STATOR ONLY (1Ø) 21656C103 21656C103

STATOR ONLY (3Ø) 230/460V 1 21656C106 21656C106

13 OIL, TRANSFORMER (1 GAL. CAN) 1.06 gal. 11009A008K 11009A008K

14 WASHER, SPRING 2 19331A005 19331A005

15 BEARING, BALL (UPPER) 1 08565A013 08565A013

16 RING, RETAINING 1 11816A006 11816A006

17 ROTOR W/SHAFT (1Ø) 1 26859C101X 26859C101X

ROTOR W/SHAFT (3Ø) 1 26859C104X 26859C104X

18 BEARING, BALL (LOWER) 1 08565A018 08565A018

19 HOUSING, UPPER SEAL 1 21574D100X 21574D100X

20 SEAL, SHAFT 2 21576A010 21576A010

21 RING, RETAINING 1 12558A006 12558A006

22 ELECTRODE W/RESISTOR 1 22578A003 22578A003

23 O-RING, 6-1/8" x 5-7/8" x 1/8" 2 05876A125 05876A125

24 FERRULE, RUBBER 1 22579A000 22579A000

25 PLUG, SPECIAL 1 21577A000 21577A000

26 HOUSING, LOWER SEAL 1 21578C110X 21578C115X

27 SCREW, CAP 5/16 x 1" LG. 4 06106A008 -----

28 CASE, VOLUTE 1 21612D000 26226D012

29 SCREW, CAP 1/4 x 1" LG. 3 19099A012 19099A012

30 IMPELLER, RECESSED 1 21663C020 21663C010

31 NUT, JAM 1 19109A070 19109A070

32 SCREW, SET 2 05013A027 05013A027

Available Models Motor Electrical Data

Standard HP Volts Phase Hertz Start Amps Run Amps

Service Factor

Amps NEC Code Letter Service Factor

SX50-21 ½ 230 1 60 12.5 4.9 5.9 H 1.2

SX50H-21 ½ 230 1 60 12.5 4.9 5.9 H 1.2

SX50-23 ½ 230 3 60 10.8 3.2 4.0 G 1.25

SX50H-23 ½ 230 3 60 10.8 3.2 4.0 G 1.25

SX50-43 ½ 460 3 60 5.4 1.6 2.0 G 1.25

SX50H-43 ½ 460 3 60 5.4 1.6 2.0 G 1.25

SX50/SX50H

MOTOR ELECTRICAL DATA

23833A465 10

WIRINGDIAGRAMS

FIG.6

CORDCONNECTORS

NOTE:Allcomponentsshownmustbeapprovedforhazardouslocations.

Altri manuali per SX50

Questo manuale è adatto per i seguenti modelli

Indice

Altri manuali MYERS Pompa di potenza

MYERS

MYERS SX50 Manuale utente

Manuali Pompa di potenza popolari di altre marche

BLACKMER

BLACKMER GNXH2A Manuale

Eaton

Eaton Vickers VT16 Manuale utente

BLACKMER

BLACKMER XLW2F Manuale

Pfeiffer

Pfeiffer MVP 020-3 AC Manuale utente

Greenlee

Greenlee 976-22 Manuale utente

Powermate

Powermate PP0100342 Manuale utente

Simplex

Simplex G3 Manuale utente

Draper

Draper BP1 Manuale utente

BLACKMER

BLACKMER XL4B Manuale

Titan

Titan WindMaster 2010 Manuale utente

Greenlee

Greenlee 975 Manuale utente

ProMinent

ProMinent Sigma X Schema elettrico

BLACKMER

BLACKMER CRL8A Manuale

Greenlee

Greenlee 976-22 Manuale utente

Greenlee

Greenlee Soiltest 1721-M4 Guida

Zenith

Zenith Pumps Manuale di istruzioni

Clarke

Clarke CBB75 Istruzioni per l'installazione

Greenlee

Greenlee 990 Manuale utente