Graco 3A1939G Owner's manual

Graco
Brand
Graco
Model
3A1939G
Type
Owner's manual

This manual is also suitable for

Graco 3A1939G - EP3 and EP4 Hose Pumps, Repair-Parts are electric-powered hose pumps designed for use in fluid transfer and metering applications. Featuring a maximum fluid working pressure of 125 psi, these pumps are ideal for professional use in various industries.

Graco 3A1939G - EP3 and EP4 Hose Pumps, Repair-Parts are electric-powered hose pumps designed for use in fluid transfer and metering applications. Featuring a maximum fluid working pressure of 125 psi, these pumps are ideal for professional use in various industries.

Repair-Parts
EP3 EP3
EP3
and and
and
EP4 EP4
EP4
Hose Hose
Hose
Pumps Pumps
Pumps
3A1939G
EN
Electric Electric
Electric
- -
-
powered powered
powered
hose hose
hose
pump pump
pump
for for
for
use use
use
in in
in
uid uid
uid
transfer transfer
transfer
and and
and
metering metering
metering
applications. applications.
applications.
For For
For
professional professional
professional
use use
use
only. only.
only.
Not Not
Not
approved approved
approved
for for
for
use use
use
in in
in
explosive explosive
explosive
atmospheres atmospheres
atmospheres
or or
or
hazardous hazardous
hazardous
locations. locations.
locations.
Important Important
Important
Safety Safety
Safety
Instructions Instructions
Instructions
Readallwarningsandinstructionsinthismanual.Savethese
instructions.
125 psi (0.9 MPa, 9 bar) Maximum Fluid
Working Pressure
See page 2 for model part numbers and
information. do
PROVENQUALITY.LEADINGTECHNOLOGY.
Contents Contents
Contents
Models...............................................................2
Warnings...........................................................3
Troubleshooting..................................................6
Repair................................................................8
BeforeYouStart..........................................8
Disassembly................................................8
Reassembly................................................12
Notes.................................................................17
Parts..................................................................18
EP3andEP4HosePumpAssembly.............18
BarePumpAssembly...................................20
PumpMatrix................................................22
PumpKitMatrix...........................................24
VariableFrequencyDrives(VFD)..................26
Notes.................................................................27
TechnicalData...................................................28
GracoStandardWarranty....................................30
Models Models
Models
Pump Pump
Pump
Model Model
Model
Hose Hose
Hose
ID ID
ID
Size Size
Size
(mm) (mm)
(mm)
Reference Reference
Reference
EP3019 EP3019
EP3019
19
SeeModelEP3019Pumps,page22foracompletelistof
pumppartnumbersanddescriptiveinformation.
EP4029 EP4029
EP4029
29
SeeModelEP4029Pumps,page23foracompletelistof
pumppartnumbersanddescriptiveinformation.
2
3A1939G
Warnings
Warnings Warnings
Warnings
Thefollowingwarningsareforthesetup,use,grounding,maintenanceandrepairofthisequipment.The
exclamationpointsymbolalertsyoutoageneralwarningandthehazardsymbolreferstoprocedure-specic
risks.Whenthesesymbolsappearinthebodyofthismanualoronwarninglabels,referbacktothese
Warnings.Product-specichazardsymbolsandwarningsnotcoveredinthissectionmayappearthroughout
thebodyofthismanualwhereapplicable.
WARNING WARNING
WARNING
FIRE FIRE
FIRE
AND AND
AND
EXPLOSION EXPLOSION
EXPLOSION
HAZARD HAZARD
HAZARD
Flammablefumes,suchassolventandpaintfumes,inwork work
work
area area
area
canigniteorexplode.Tohelp
preventreandexplosion:
•Useequipmentonlyinwellventilatedarea.
•Eliminateallignitionsources;suchaspilotlights,cigarettes,portableelectriclamps,and
plasticdropcloths(potentialstaticarc).
•Keepworkareafreeofdebris,includingsolvent,ragsandgasoline.
•Donotplugorunplugpowercords,orturnpowerorlightswitchesonoroffwhenammable
fumesarepresent.
•Groundallequipmentintheworkarea.SeeGrounding Grounding
Grounding
instructions.
•Useonlygroundedhoses.
•Holdgunrmlytosideofgroundedpailwhentriggeringintopail.
•Ifthereisstaticsparkingoryoufeelashock,stop stop
stop
operation operation
operation
immediately. immediately.
immediately.
Donotuse
equipmentuntilyouidentifyandcorrecttheproblem.
•Keepaworkingreextinguisherintheworkarea.
ELECTRIC ELECTRIC
ELECTRIC
SHOCK SHOCK
SHOCK
HAZARD HAZARD
HAZARD
Thisequipmentmustbegrounded.Impropergrounding,setup,orusageofthesystemcan
causeelectricshock.
•Turnoffanddisconnectpoweratmainswitchbeforedisconnectinganycablesandbefore
servicingorinstallingequipment.
•Connectonlytogroundedpowersource.
•Allelectricalwiringmustbedonebyaqualiedelectricianandcomplywithalllocalcodes
andregulations.
MOVING MOVING
MOVING
PARTS PARTS
PARTS
HAZARD HAZARD
HAZARD
Movingpartscanpinch,cutoramputatengersandotherbodyparts.
•Keepclearofmovingparts.
•Donotoperateequipmentwithprotectiveguardsorcoversremoved.
•Pressurizedequipmentcanstartwithoutwarning.Beforechecking,moving,orservicing
equipment,followthePressure Pressure
Pressure
Relief Relief
Relief
Procedure Procedure
Procedure
anddisconnectallpowersources.
3A1939G 3
Warnings
WARNING WARNING
WARNING
ENTANGLEMENT ENTANGLEMENT
ENTANGLEMENT
HAZARD HAZARD
HAZARD
Rotatingpartscancauseseriousinjury.
•Keepclearofmovingparts.
•Donotoperateequipmentwithprotectiveguardsorcoversremoved.
•Donotwearlooseclothing,jewelryorlonghairwhileoperatingequipment.
•Equipmentcanstartwithoutwarning.Beforechecking,movingorservicingequipment,follow
thePressure Pressure
Pressure
Relief Relief
Relief
Procedure Procedure
Procedure
anddisconnectallpowersources.
TOXIC TOXIC
TOXIC
FLUID FLUID
FLUID
OR OR
OR
FUMES FUMES
FUMES
Toxicuidsorfumescancauseseriousinjuryordeathifsplashedintheeyesoronskin,
inhaled,orswallowed.
•ReadMSDSstoknowthespecichazardsoftheuidsyouareusing.
•Storehazardousuidinapprovedcontainers,anddisposeofitaccordingtoapplicable
guidelines.
PERSONAL PERSONAL
PERSONAL
PROTECTIVE PROTECTIVE
PROTECTIVE
EQUIPMENT EQUIPMENT
EQUIPMENT
Youmustwearappropriateprotectiveequipmentwhenoperating,servicing,orwheninthe
operatingareaoftheequipmenttohelpprotectyoufromseriousinjury,includingeyeinjury,
hearingloss,inhalationoftoxicfumes,andburns.Thisequipmentincludesbutisnotlimitedto:
•Protectiveeyewear,andhearingprotection.
•Respirators,protectiveclothing,andglovesasrecommendedbytheuidandsolvent
manufacturer.
PRESSURIZED PRESSURIZED
PRESSURIZED
EQUIPMENT EQUIPMENT
EQUIPMENT
HAZARD HAZARD
HAZARD
Fluidfromtheequipment,leaks,orrupturedcomponentscansplashintheeyesoronskin
andcauseseriousinjury.
•FollowthePressure Pressure
Pressure
Relief Relief
Relief
Procedure Procedure
Procedure
whenyoustopspraying/dispensingandbefore
cleaning,checking,orservicingequipment.
•Tightenalluidconnectionsbeforeoperatingtheequipment.
•Checkhoses,tubes,andcouplingsdaily.Replacewornordamagedpartsimmediately.
4
3A1939G
Warnings
WARNING WARNING
WARNING
EQUIPMENT EQUIPMENT
EQUIPMENT
MISUSE MISUSE
MISUSE
HAZARD HAZARD
HAZARD
Misusecancausedeathorseriousinjury.
•Donotoperatetheunitwhenfatiguedorundertheinuenceofdrugsoralcohol.
•Donotexceedthemaximumworkingpressureortemperatureratingofthelowestrated
systemcomponent.SeeTechnical Technical
Technical
Data Data
Data
inallequipmentmanuals.
•Useuidsandsolventsthatarecompatiblewithequipmentwettedparts.SeeTechnical Technical
Technical
Data Data
Data
inallequipmentmanuals.Readuidandsolventmanufacturer’swarnings.Forcomplete
informationaboutyourmaterial,requestMSDSfromdistributororretailer.
•Donotleavetheworkareawhileequipmentisenergizedorunderpressure.
•TurnoffallequipmentandfollowthePressure Pressure
Pressure
Relief Relief
Relief
Procedure Procedure
Procedure
whenequipmentisnotinuse.
•Checkequipmentdaily.Repairorreplacewornordamagedpartsimmediatelywithgenuine
manufacturer’sreplacementpartsonly.
•Donotalterormodifyequipment.
•Useequipmentonlyforitsintendedpurpose.Callyourdistributorforinformation.
•Routehosesandcablesawayfromtrafcareas,sharpedges,movingparts,andhotsurfaces.
•Donotkinkoroverbendhosesorusehosestopullequipment.
•Keepchildrenandanimalsawayfromworkarea.
•Complywithallapplicablesafetyregulations.
3A1939G 5
Troubleshooting
Troubleshooting Troubleshooting
Troubleshooting
NOTE: NOTE:
NOTE:
Checkallpossibleremediesbeforedisassemblingthepump.
Problem Problem
Problem
Cause Cause
Cause
Solution Solution
Solution
Inletoroutletpipediameterstoo
small.
Increasepipesizeoraddpulsation
dampeners.
Highpumpspeed.
Reducespeedofpump.
Inletoroutletconnectionsnot
properlyanchored.
Securepiping.
Hammeringinpiping.
HighInletoroutletpressures.Addpulsationdampeners.
Lowlubricantlevel.Addhoselubetotheproperlevel.
Improperlubricant.
UseonlyGracohoselubeforlow
temperatureoperation.
Pumpeduidtemperaturetoo
high.
ConsultyourGracodistributorfor
maximumtemperaturelimitsof
yourpump.
Highpumptemperature.
Highpumpspeed/pump
undersized.
Reducethepumpspeedorswitch
toalargerpump.
Blockedoutletline.
Clearanyobstructionsintheoutlet
line.
Narrowedpipediameterdueto
settledsolids.
Determineifsolidshavesettled
inpipingandush/removeas
required.
Highoutletpressure.
Viscosityorspecicgravityof
pumpeduidtoohigh.
ConsultyourGracodistributorfor
suitableoperatingconditionsfor
yourpump.
Failedhose.
Checktoseeifthehosehasfailed.
Ifso,replacewithanewhoseand
lubricant.
Blockedinletline.
Clearanyobstructionsintheinlet
line.
Inletlinetoolongortoosmall.Trytolocatethepumpasnear
totheuidsourceaspossible.
Oversizetheinletpipingwhen
possible.
Lowinletpressure.
Viscosityorspecicgravityof
pumpeduidtoohigh.
ConsultyourGracodistributorfor
suitableoperatingconditionsfor
yourpump.
Lowow.
Failedhose.
Checktoseeifthehosehasfailed.
Ifso,replacewithanewhoseand
lubricant.
6 3A1939G
Troubleshooting
Problem Problem
Problem
Cause Cause
Cause
Solution Solution
Solution
Chemicalincompatibility.ConsultyourGracodistributorto
seeifyouhavethecorrecthose
foryourapplication.
Normalwear.
Thehosemayhavefaileddueto
normalwear.Replaceasrequired.
Failureduetopulsations.
Ifyoupumpisequippedwitha
pulsationdampener,adjustits
pressure.Ifyoudonothavea
dampener,consultyourGraco
distributor.
Toohighoutletpressure.
Checkitemslistedin“Highoutlet
pressure.”Runningthepump
againstaclosedvalve,evenfora
shortamountoftime,maydamage
hose.
Poorhoselife.
Settledsolidsinhose.
Flushthepumpandhosepriorto
turningthepumpoff.
Hoselubeleakingfromfrontcover.Coverboltsover-tightened.
Refertotorquespecicationsin
InstalltheFrontCover,page16.
Lubricantleaks
Hoselubeleakingfromhose
clamps.
Pumphousingoverlled.Check
hoselubelevelandadjustas
necessary.
Hosefailedbecauseitwrapped
aroundroller.
Pumpwasoperatedagainsta
closedoutletvalveorblockedline.
Replacehose.Checkpressure
reliefsystem.Checkthatvalves
areopen.Clearanyblockages.
3A1939G
7
Repair
Repair Repair
Repair
Before Before
Before
You You
You
Start Start
Start
1.Flushthepump.
2.Relievethepressure.
3.Disconnectpowertothepump.
4.Makesurethepumpiselectricallyisolated.
Unexpectedoperationofthepumpcancause
seriousinjury.Removethefancoveronlyafter
themotorhasbeenlockedout.
Disassembly Disassembly
Disassembly
Drain Drain
Drain
the the
the
Oil Oil
Oil
1.Holdapailunderthedrainplug(17)andunscrew
theplugtodrainthelubricatingoil.Disposeof
theoilproperly.Takecare,astheoilmaybe
contaminatedbythepumpeduid.
2.Removetheventplug(15)andushthepump
housingwithacompatiblesolvent.
Figure1PumpDrainandVent
Remove Remove
Remove
the the
the
Front Front
Front
Cover Cover
Cover
1.Unscrewthesocketheadcapscrews(14)and
washers(13)thatholdthefrontcover(12),
removingthetopscrewandwasherlast.Take
thecoveroffthepump.SeeFig.5,page11.
2.Removethefrontcovergasket(11).
3.Inspectandcleanthesightglass(16)andcover
(12),thensetaside.
8 3A1939G
Repair
Remove Remove
Remove
the the
the
Hose Hose
Hose
1.SeeFig5,page11.Removethescrewsholding
themotorfancover(FC).Turnthefanbyhand
untiltheroller(102)stopsatthebottomofthe
pumphousing(1)inthe6o’clockposition.
NOTE: NOTE:
NOTE:
LowRPMpumpsandhighratio
gearboxesmayrequiremanyturnsofthemotor
fantomovetherollertothe6o’clockposition.
2.Removethefourscrews(21)fromeachbarb
clamp(20)ontheinletandoutletportsofthe
pumpandliftofftheclamps.
3.
On EP4 Pumps only:
Removethetophalfofthe
barbedttingpositioningwasherandkeepfor
reuse.Thebottomhalfofthewasheriswelded
inplaceandcannotberemoved.
4.Ifpossible,ensurethatthehoseclamps(104)
arepositionedwiththeclampportionatthetop.
Cutthroughtheclampwithahacksaworrotary
tool.Becarefulnottodamagethehose(103)or
thepumphousing(1).
Figure2CuttheClamp
5.Usingascrewdriver,removetheclamp,then
removetheband.
Figure3RemovetheClamp
6.Thehoseassemblyisseatedrmlyinthepump
housing(1).Placeasmooth,smalldiameter
metalrodintothebarbedttings(105)andlift
thehoseassemblytofreeit.Pullthehoseso
itextendsabout2–3in.(51–76mm)outofthe
pump.
7.Removeonebarbedtting(105)fromthehose
(103).
8.Graspthehose(103)fromtheinsideofthepump
housing(1)andpullitintothehousing.The
centerofthehosewillstillbeheldbytherollerin
the6o’clockposition.
9.Removethesecondbarbassemblyasdescribed
above.
10.Turnthemotorbyhanduntiltheroller(102)isnot
compressingthehose(103).Thiswillbenear
the9o’clockor3o’clockposition.
Figure4Rollerin3O’ClockPosition
11.Pulltheotherendofthehoseintothepump
housing(1).
12.Removeandsafelydiscardtheusedhose,per
yourfacility’swastedisposalpolicy.
3A1939G 9
Repair
Remove Remove
Remove
the the
the
Roller Roller
Roller
1.Usingexternalsnapringpliers,removetheroller
retainingring(9)fromthefrontoftheeccentric
shaft(7).Slidethebushing(10)offtheshaft.
2.Pulltheroller(102)offtheshaft.Itshouldslide
offeasily.
3.
On EP3 Pumps only:
Slidethesecondbushing
(10)offtheshaft.Removethesecondroller
retainingring(9).
4.Inspecttheinsideandoutsidediameterofthe
roller(102),andreplaceitifwornordamaged.
Figure5RemovetheHoseandRoller
10 3A1939G
Repair
Remove Remove
Remove
the the
the
Eccentric Eccentric
Eccentric
Shaft Shaft
Shaft
1.Usingexternalsnapringpliers,removethe
eccentricshaftretainingring(8)fromthemotor
outputshaft(2).SeeFig6.
2.Removetheeccentricshaft(7)fromthemotor
outputshaft.Be Be
Be
sure sure
sure
to to
to
retain retain
retain
the the
the
eccentric eccentric
eccentric
shaft shaft
shaft
key key
key
(6). (6).
(6).
NOTE: NOTE:
NOTE:
Youmayneedtouseapullerto
disengagetheeccentricshaftfromthemotor
outputshaft.
Remove Remove
Remove
the the
the
Motor Motor
Motor
Output Output
Output
Shaft Shaft
Shaft
NOTE: NOTE:
NOTE:
Themotoroutputshaftisheldinplacewith
aretainingring(3)locatedbehindtheouteru-cup
seal(4).Theoutersealmustberemovedbefore
removingtheretainingring.Thissealwilllikelybe
damagedwhenremovedsinceitisheldinplaceby
atightpresst.
1.Usingaatheadscrewdriver,removetheouter
u-cupseal(4).
2.Usinginternalsnapringpliers,removethe
retainingring(3)fromthepumphousing(1).
3.Removethefourscrews(109)andwashers(108)
holdingthegearboxandmotorassembly(107)
tothepumphousing(1).Removethegearbox
andmotorassemblytoallowaccesstotheinner
u-cupseal(5).Be Be
Be
sure sure
sure
to to
to
retain retain
retain
the the
the
motor motor
motor
output output
output
shaft shaft
shaft
key key
key
(106). (106).
(106).
NOTE: NOTE:
NOTE:
Formotorandgearboxrepairinformation,
contactSEW-Eurodrive.
4.Removetheinneru-cupseal(5).Thissealwill
likelybedamagedwhenremovedsinceitisheld
inplacebyatightpresst.
5.Tapthegearboxendoftheshaft(2)witharubber
mallettodrivetheshaftoutthroughthefrontof
thepumphousing(1).
Figure6RemovetheEccentricShaftandMotorOutputShaft
3A1939G
11
Repair
Reassembly Reassembly
Reassembly
Clean Clean
Clean
and and
and
Inspect Inspect
Inspect
All All
All
Parts Parts
Parts
NOTICE NOTICE
NOTICE
UseonlygenuineGracoreplacementparts.
Non-standardpartswillvoidyourwarrantyand
maydamageyourequipment.
•Discardallusedseals,gasketsandwornparts.
•Ensurethatallnewandexistingpartsareclean
andundamaged.
•Thoroughlycleanallpartswithacompatible
solventandinspectfordamageorwear.Replace
allgaskets,washers,wornpartsandhardwareas
necessary.
•Inspecttheinnerdiameterofthepumproller.Ifthe
surfacehasbeenworn,replacetheroller.
•Inspectthebearingsonthemotoroutputshaft(2).
Ifthebearingsareworn,replacetheshaft.
•Inspecttheshaftandbearingboreinthepump
housing(1).Ensureitisround,withoutgroovesor
othersignsofwear,andfreeofdirt,lings,orother
debris.Adirtyordamagedbearingborewillgreatly
reducethelifeofthebearings.
•Inspectallmetalpartsforsignsofwearorcracks.
Replaceallwornparts.
NOTICE NOTICE
NOTICE
Thepumphousingisaluminum.Tohelpprevent
galling,blowoutthethreadswithcompressedair
beforeinstallinganyttingsorfasteners.
Install Install
Install
the the
the
Motor Motor
Motor
Output Output
Output
Shaft Shaft
Shaft
1.Inspectthebearingsandmakesurethatallrotate
freelyandareseatedagainsttheshoulderofthe
shaft(2).SeeFig7.
2.Coattheouterracesoftheshaftbearingsand
theinnerdiameterofthebearingborewithlight
lubricatingoil.Makesurethereisnodirtordebris
oneitherthebearingsorthebearingbore.
3.Inserttheshaft(2)intothepumphousing(1)from
thefront,makingsurethatthebearingsengage
thebearingboreushandstraight.Taptheroller
endoftheshaftwitharubbermalletuntilthe
shaftisrmlyseatedinthepumphousing.
NOTICE NOTICE
NOTICE
Donotforcetheshaftandbearingsintothe
pumphousing.Thismaycausedamagetothe
bearingsorthehousing.
4.Installthebearingretainingring(3)infrontofthe
outerbearing.
Install Install
Install
the the
the
Seals Seals
Seals
1.Pressanewinneru-cupseal(5)ontothegearbox
endoftheshaft(2)andintotheboreattherear
ofthepumphousing(1).Thelipsoftheu-cup
mustfaceintothepumphousing.SeeFig7.
2.GreasethepumpwithNLGI#2typegrease.
Removetheplug(18)fromthepumphousing
andreplacewithazerktting.Addgreaseuntil
itpassesthroughtheouterbearingoftheshaft.
Thisprovidesavisualreferenceoftheproper
amountofgrease.Donotover-grease.Remove
thezerkttingandreinstalltheplug(18).
3.Pressanewouteru-cupseal(4)ontothepump
endoftheshaft(2)andintotheboreatthefront
ofthepumphousing(1).Thelipsoftheu-cup
mustfacetowardtheshaftbearings.
4.Makesurethattheshaftrotatessmoothly.
12
3A1939G
Repair
Figure7InstalltheMotorOutputShaftandEccentricShaft
Key Key
Key
for for
for
Figure Figure
Figure
7 7
7
Note Note
Note
Description Description
Description
1
Lipsoftheu-cup(4)mustfacetowardtheshaftbearings.
2
Lipsoftheu-cup(5)mustfaceintothepumphousing.
3
Lubricatewithhoselube.
Install Install
Install
the the
the
Motor Motor
Motor
and and
and
Gearbox Gearbox
Gearbox
1.Lubricatethemotoroutputshaft(2)andthe
keywaywithananti-seizecompound.
2.Thegearboxismanufacturedwithahollow
bore.Removetheplasticcaponthebackofthe
gearboxtohelpwithalignmentoftheshaft.
3.Slidethemotorandgearboxassembly(107)
ontotheshaft(2).Installthekey(106).Secureto
thepumphousing(1)withthefourscrews(109)
andwashers(108).
Install Install
Install
the the
the
Eccentric Eccentric
Eccentric
Shaft Shaft
Shaft
1.Ensurethatthekeywayonthemotoroutputshaft
(2)isfacingup.Itmaybenecessarytoturnthe
motorfanbyhandtopositiontheshaft.
2.Slidetheeccentricshaft(7)overtheendof
themotoroutputshaft(2).Installthekey(6).
Theeccentricandthekeyshouldslideeasily
together.
3.Securetheeccentricshaft(7)withtheeccentric
shaftretainingring(8).
3A1939G 13
Repair
Install Install
Install
the the
the
Roller Roller
Roller
NOTE: NOTE:
NOTE:
Therollersizeistypicallymarkedonthe
roller.Verifythatyouhavethecorrectlysizedroller.
1.
On EP3 Pumps only:
Installarollerretainingring
(9)usingexternalsnapringpliers.Makesure
thattheringisfullyseatedinthegrooveonthe
eccentricshaft(7).Installabushing(10).See
Fig8.
2.Lubricatetheeccentricshaft(7)withhoselube.
Slidetheroller(102)ontotheshaft.Theroller
shouldtontotheshaftsnuglywithminimal
radialmovement.
3.Installabushing(10)andarollerretainingring
(9).Verifythattheroller(102)turnsfreelyon
theshaft(7).
Figure8InstalltheRoller,Hose,andFrontCover
Key Key
Key
for for
for
Figure Figure
Figure
8 8
8
Note Note
Note
Description Description
Description
4
EP3019:Torqueto115in-lb(13.0N•m).
EP4029:Torqueto140in-lb(16.0N•m).
5
EP3019:Torqueto25in-lb(2.8N•m).
EP4029:Torqueto35in-lb(4.0N•m).
14
3A1939G
Repair
Install Install
Install
the the
the
Hose Hose
Hose
1.Movetheroller(102)byturningthemotorfan
untiltherollerreachesthe6o’clockposition.
Figure9Rollerin6O’ClockPosition
2.Installoneendofthehose(103)throughthe
rearportofthepumphousingonthelefthand
sidewhenlookingatitfromthefront.Extend
thehose2-3in.(51–76mm)beyondthepump
housing(1).
3.Slidethehoseclamp(104)overthehoseand
installthebarbedtting(105).
4.Positionthehoseclampabout1/4in.(6mm)
fromtheendofthehose.Ensurethatthe
bandwilltintotherecessesofthebarbclamp
(20)andpumphousing(1).Usingthe24L497
ClampingTool,tightentheclamptosecurethe
hoseontothebarbedtting.
Figure10TightentheClamp
5.Cuttheexcessband,thenattentheendwitha
rubbermallet.
Figure11SeattheBarbedFitting
6.Pushtheassembledhoseendintothebarb
clamprecess,usingasmoothmetalrodtohold
thebarbinplace.Thetmaybetight;usea
rubbermallettoseatthebarbedttingassembly.
NOTE: NOTE:
NOTE:
Verifythatthebarbedtting(105)is
correctlypositioned.Thehexonthebarbedtting
(105)mustbealignedwiththecorrespondinghex
onthepumphousing.Thiswillholdthebarbed
ttingrmlyinplace.
7.
On EP4 Pumps only:
Installthetophalfofthe
barbedttingpositioningwasher.Thebottom
halfofthewasherisweldedinplace.
8.Installtheclamp(20)andscrews(21).Torque
thescrewsto115in-lb(13N•m)fortheEP3
Pumpsandto140in-lb(16.0N•m)fortheEP4
Pumps.
9.Loopthehose(103)360degreesandpassthe
otherendthroughthefrontportontherighthand
sideofthepumphousing(1).Assemblethe
barbedtting(105)andclamp(104)asexplained
insteps3–8.
10.Turntheroller(102)tothe12o’clockpositionto
compressthehose,thenpushthehoseintothe
pumphousing.Usearubbermalletifthehose
isdifculttoseat.
11.Returntheroller(102)tothe6o’clockposition.
Itiscriticalthattherollerisatthebottomofthe
pumptoensurethecorrectcapacityofhoselube.
Reinstallthemotorfancover.
NOTICE NOTICE
NOTICE
Therollermustbereturnedtothe6o’clock
positionbeforeinstallingthefrontcover.
Failuretodosowillresultinoverllingofthe
pumpwithhoselube.
3A1939G 15
Repair
Install Install
Install
the the
the
Front Front
Front
Cover Cover
Cover
1.Scrapealldebrisfromthegasketmatingsurfaces
onthefrontcover(12)andthepumphousing
(1),thencleanwithacetoneorbrakecleanerto
removeanyresidue.Thisiscriticaltoensurea
leak-freeassembly.
NOTE: NOTE:
NOTE:
Thepumphousingandfrontcovermust
befreeofdirt,debrisandresiduetoensurea
leak-freeseal.
NOTE: NOTE:
NOTE:
Theholepatternofthefrontcover(12),
gasket(11),andhousingareasymmetric.This
ensuresthatthegasketandcovergooninonly
onedirection.
2.Lineuptheholesinthegasket(11)withtheholes
inthecover(12).Placethegasketonthecover.
3.Lineupthefrontcover(12)andgasket(11)with
thepumphousing(1)byplacingasockethead
capscrew(14)andwasher(13)inthetophole
andscrewingitintothepumphousing.
4.Installtheremainingfrontcoverscrews(14)and
washers(13).Torquethescrewsoppositelyto
25in-lb(2.8N•m)fortheE3Pumpsandto35
in-lb(4.0N•m)fortheE4Pumps.
NOTE: NOTE:
NOTE:
Donotover-tightenthefrontcover
screws.Thiswillcausethegaskettodeformand
thepumptoleak.
Lubricate Lubricate
Lubricate
the the
the
Pump Pump
Pump
NOTICE NOTICE
NOTICE
Thepumphousingisaluminum.Tohelpprevent
galling,blowoutthethreadswithcompressedair
beforeinstallinganyttingsorfasteners.
1.Wrapthedrainplug(17)threadswithPTFEtape
andinstalltheplug.
2.Wrapthesightglass(16)threadswithPTFEtape
andinstall.
3.Usingafunnel,addhoselubethroughthevent
portuntiltheoilbecomesvisiblethroughthe
sightglass.Theoillevelmustnotriseabovethe
halfwaypointontheroller.
NOTE: NOTE:
NOTE:
Do Do
Do
not not
not
overll. overll.
overll.
Overllingthepump
housingwithhoselubewillincreasepressure
inthepumphousing,causinghoselubetoleak
fromthecoverortheclamparea.Seethetable
belowforthecorrectamountofhoselubefor
yourpump.Pre-measuringthecorrectamount
willhelppreventoverlling.
Pump Pump
Pump
Model Model
Model
Amount Amount
Amount
of of
of
Hose Hose
Hose
Lube Lube
Lube
(approximate) (approximate)
(approximate)
EP3019
0.25gal.(1liter)
EP4029
0.5gal.(2liters)
Figure12HoseLubeLevelinSightglass
NOTE: NOTE:
NOTE:
Higheroperatingspeedsprovidemore
vigorouslubrication,whichmaycausesplashing
ofoil.Whenoperatingataspeedof85RPM
orgreater,reducetheamountofhoselubeas
showninthetablebelow.
Oper- Oper-
Oper-
ating ating
ating
Speed Speed
Speed
(RPM) (RPM)
(RPM)
Amount Amount
Amount
of of
of
Hose Hose
Hose
Lube Lube
Lube
0–84Asrecommendedinthetable
above.
85–104
70%ofrecommendedquantity
105–114
60%ofrecommendedquantity
115and
above
50%ofrecommendedquantity
4.Wraptheventplug(15)threadswithPTFEtape
andscrewitintotheventportcarefully.
16 3A1939G
Notes
Notes Notes
Notes
3A1939G
17
Parts
Parts Parts
Parts
EP3 EP3
EP3
and and
and
EP4 EP4
EP4
Hose Hose
Hose
Pump Pump
Pump
Assembly Assembly
Assembly
EP3019 EP3019
EP3019
and and
and
EP4029 EP4029
EP4029
Pumps, Pumps,
Pumps,
Series Series
Series
A A
A
Includesitems101–119
18 3A1939G
Parts
Ref. Ref.
Ref.
No. No.
No.
Part Part
Part
No. No.
No.
Description Description
Description
Qty Qty
Qty
24L888
ASSEMBLY,pump;
EP3019;seeBarePump
Assembly,page20
1 101
24L889
ASSEMBLY,pump;
EP4029;seeBarePump
Assembly,page20
1
24K589
ROLLERKIT;forEP3019;
includesitems9and10
(page20)
1
102
24K614
ROLLERKIT;forEP4029;
includesitems9and10
(page20)
1
103
SeeHOSEKIT;includestwo
hoseclamps(104)
1
10424M117KIT,hoseclamp;package
of10
1
BARBEDFITTINGKIT;
forEP3019;kitincludes
onebarbedttingandone
clamp(104)
2
105
See
Pump
Matrix,
page22
BARBEDFITTINGKIT;for
EP4029;kitincludesone
barbedtting,oneclamp
(104),andonehalf-washer
2
---
KEY,motorshaft;EP3019
1
106
---
KEY,motorshaft;EP4029
1
Ref. Ref.
Ref.
No. No.
No.
Part Part
Part
No. No.
No.
Description Description
Description
Qty Qty
Qty
MOTORandGEARBOX(s-
eePumpMatrix,page22f-
orthemotorandgearbox
usedonyourpump)
24L9871.5HP;35.91gearratio;
EP3019
24L9881.0HP;100.36gearratio;
EP3019
24L9892.0HP;19.70gearratio;
EP4029
24L9902.0HP;34.29gearratio;
EP4029
107
24L9912.0HP;79.72gearratio;
EP4029
1
---
WASHER,splitlock;M8;
EP3019
4
108
---
WASHER,splitlock;M10;
EP4029
4
---
SCREW,cap,hexhd;M8
x25mm;EP3019
4
109
---
SCREW,cap,hexhd;M10
x30mm;EP4029
4
119
u
24K694
HOSELUBE,glycerin;1
gallon(3.8liter);notshown
1
u
Hose lube is also available in a 1 quart (0.95 liter)
bottle. Order Part No. 24K692.
Parts labeled --- are not available separately.
3A1939G 19
Parts
Bare Bare
Bare
Pump Pump
Pump
Assembly Assembly
Assembly
Model Model
Model
24L888 24L888
24L888
Pump Pump
Pump
Assembly, Assembly,
Assembly,
Series Series
Series
A, A,
A,
for for
for
EP3019 EP3019
EP3019
Pumps Pumps
Pumps
Includesitems1–23
Model Model
Model
24L889 24L889
24L889
Pump Pump
Pump
Assembly, Assembly,
Assembly,
Series Series
Series
A, A,
A,
for for
for
EP4029 EP4029
EP4029
Pumps Pumps
Pumps
Includesitems1–23
20 3A1939G
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Graco 3A1939G Owner's manual

Graco
Brand
Graco
Model
3A1939G
Type
Owner's manual
This manual is also suitable for

Graco 3A1939G - EP3 and EP4 Hose Pumps, Repair-Parts are electric-powered hose pumps designed for use in fluid transfer and metering applications. Featuring a maximum fluid working pressure of 125 psi, these pumps are ideal for professional use in various industries.

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