Graco 3A1939G User Manual

Repair-Parts

EP3

EP3 EP3

Electric

Electric Electric
only.

only. only.
Not

approved

Not Not

approved approved

125 psi (0.9 MPa, 9 bar) Maximum Fluid
Working Pressure
See page 2 for model part numbers and
information. do

and

and and

powered

- --powered powered

Important

Important Important
Readallwarningsandinstructionsinthismanual.Savethese
instructions.

EP4

EP4 EP4

hose

pump

hose hose

pump pump

for

use

for for

use use

Safety

Safety Safety

explosive

in ininexplosive explosive

Instructions

Instructions Instructions

Hose

Hose Hose

for

use

for for

use use

in inin󰘱uid 󰘱uid

atmospheres

atmospheres atmospheres

Pumps

Pumps Pumps

󰘱uid

transfer

transfer transfer

and

metering

and and

metering metering

or

hazardous

or or

hazardous hazardous

applications.

applications. applications.

locations.

locations. locations.

For

professional

For For

professional professional

EN

use

use use

3A1939G

PROVENQUALITY.LEADINGTECHNOLOGY.

Contents

Contents Contents

Models...............................................................2

Warnings...........................................................3

Troubleshooting..................................................6

Repair................................................................8

BeforeYouStart..........................................8

Disassembly................................................8

Reassembly................................................12

Notes.................................................................17

Parts..................................................................18

Models

Models Models

Pump

Model

Pump Pump

Model Model

EP3019

EP3019 EP3019

EP4029

EP4029 EP4029

Hose

ID

Hose Hose
(mm)

(mm) (mm)

19

29

Size

ID ID

Size Size

EP3andEP4HosePumpAssembly.............18

BarePumpAssembly...................................20

PumpMatrix................................................22

PumpKitMatrix...........................................24

VariableFrequencyDrives(VFD)..................26

Notes.................................................................27

TechnicalData...................................................28

GracoStandardWarranty....................................30

Reference

Reference Reference

SeeModelEP3019Pumps,page22foracompletelistof
pumppartnumbersanddescriptiveinformation.

SeeModelEP4029Pumps,page23foracompletelistof
pumppartnumbersanddescriptiveinformation.

2

3A1939G

Warnings

Warnings Warnings

Thefollowingwarningsareforthesetup,use,grounding,maintenanceandrepairofthisequipment.The
exclamationpointsymbolalertsyoutoageneralwarningandthehazardsymbolreferstoprocedure-speci󰘰c
risks.Whenthesesymbolsappearinthebodyofthismanualoronwarninglabels,referbacktothese
Warnings.Product-speci󰘰chazardsymbolsandwarningsnotcoveredinthissectionmayappearthroughout
thebodyofthismanualwhereapplicable.

WARNING

WARNING WARNING

FIRE

AND

FIRE FIRE

Flammablefumes,suchassolventandpaintfumes,inwork work
prevent󰘰reandexplosion:

•Useequipmentonlyinwellventilatedarea.

•Eliminateallignitionsources;suchaspilotlights,cigarettes,portableelectriclamps,and
plasticdropcloths(potentialstaticarc).

•Keepworkareafreeofdebris,includingsolvent,ragsandgasoline.

•Donotplugorunplugpowercords,orturnpowerorlightswitchesonoroffwhen󰘱ammable
fumesarepresent.

•Groundallequipmentintheworkarea.SeeGrounding Grounding

•Useonlygroundedhoses.

•Holdgun󰘰rmlytosideofgroundedpailwhentriggeringintopail.

•Ifthereisstaticsparkingoryoufeelashock,stop stop
equipmentuntilyouidentifyandcorrecttheproblem.

•Keepaworking󰘰reextinguisherintheworkarea.

ELECTRIC

ELECTRIC ELECTRIC
Thisequipmentmustbegrounded.Impropergrounding,setup,orusageofthesystemcan
causeelectricshock.

EXPLOSION

AND AND

EXPLOSION EXPLOSION

SHOCK

SHOCK SHOCK

HAZARD

HAZARD HAZARD

work

area

area area

canigniteorexplode.Tohelp

Grounding

stop

HAZARD

HAZARD HAZARD

instructions.

operation

operation operation

immediately.

immediately. immediately.

Donotuse

Warnings

•Turnoffanddisconnectpoweratmainswitchbeforedisconnectinganycablesandbefore
servicingorinstallingequipment.

•Connectonlytogroundedpowersource.

•Allelectricalwiringmustbedonebyaquali󰘰edelectricianandcomplywithalllocalcodes
andregulations.

MOVING

MOVING MOVING
Movingpartscanpinch,cutoramputate󰘰ngersandotherbodyparts.

•Keepclearofmovingparts.

•Donotoperateequipmentwithprotectiveguardsorcoversremoved.

•Pressurizedequipmentcanstartwithoutwarning.Beforechecking,moving,orservicing
equipment,followthePressure Pressure

3A1939G 3

PARTS

PARTS PARTS

HAZARD

HAZARD HAZARD

Pressure

Relief

Procedure

Relief Relief

Procedure Procedure

anddisconnectallpowersources.

Warnings

WARNING

WARNING WARNING

ENTANGLEMENT

ENTANGLEMENT ENTANGLEMENT
Rotatingpartscancauseseriousinjury.

•Keepclearofmovingparts.

•Donotoperateequipmentwithprotectiveguardsorcoversremoved.

•Donotwearlooseclothing,jewelryorlonghairwhileoperatingequipment.

•Equipmentcanstartwithoutwarning.Beforechecking,movingorservicingequipment,follow
Pressure

thePressure Pressure

TOXIC

TOXIC TOXIC
Toxic󰘱uidsorfumescancauseseriousinjuryordeathifsplashedintheeyesoronskin,
inhaled,orswallowed.

•ReadMSDSstoknowthespeci󰘰chazardsofthe󰘱uidsyouareusing.

•Storehazardous󰘱uidinapprovedcontainers,anddisposeofitaccordingtoapplicable

PERSONAL

PERSONAL PERSONAL
Youmustwearappropriateprotectiveequipmentwhenoperating,servicing,orwheninthe
operatingareaoftheequipmenttohelpprotectyoufromseriousinjury,includingeyeinjury,
hearingloss,inhalationoftoxicfumes,andburns.Thisequipmentincludesbutisnotlimitedto:

FLUID

FLUID FLUID

guidelines.

HAZARD

HAZARD HAZARD

Relief

Procedure

Relief Relief

Procedure Procedure

OR

FUMES

OR OR

FUMES FUMES

PROTECTIVE

PROTECTIVE PROTECTIVE

anddisconnectallpowersources.

EQUIPMENT

EQUIPMENT EQUIPMENT

•Protectiveeyewear,andhearingprotection.

•Respirators,protectiveclothing,andglovesasrecommendedbythe󰘱uidandsolvent

manufacturer.

PRESSURIZED

PRESSURIZED PRESSURIZED
Fluidfromtheequipment,leaks,orrupturedcomponentscansplashintheeyesoronskin
andcauseseriousinjury.

•FollowthePressure Pressure

cleaning,checking,orservicingequipment.

•Tightenall󰘱uidconnectionsbeforeoperatingtheequipment.

•Checkhoses,tubes,andcouplingsdaily.Replacewornordamagedpartsimmediately.

EQUIPMENT

EQUIPMENT EQUIPMENT

Pressure

Relief

Relief Relief

HAZARD

HAZARD HAZARD

Procedure

Procedure Procedure

whenyoustopspraying/dispensingandbefore

4

3A1939G

WARNING

WARNING WARNING

EQUIPMENT

EQUIPMENT EQUIPMENT
Misusecancausedeathorseriousinjury.

•Donotoperatetheunitwhenfatiguedorunderthein󰘱uenceofdrugsoralcohol.

•Donotexceedthemaximumworkingpressureortemperatureratingofthelowestrated
systemcomponent.SeeTechnical Technical

•Use󰘱uidsandsolventsthatarecompatiblewithequipmentwettedparts.SeeTechnical Technical
inallequipmentmanuals.Read󰘱uidandsolventmanufacturer’swarnings.Forcomplete
informationaboutyourmaterial,requestMSDSfromdistributororretailer.

•Donotleavetheworkareawhileequipmentisenergizedorunderpressure.

•TurnoffallequipmentandfollowthePressure Pressure

•Checkequipmentdaily.Repairorreplacewornordamagedpartsimmediatelywithgenuine
manufacturer’sreplacementpartsonly.

•Donotalterormodifyequipment.

•Useequipmentonlyforitsintendedpurpose.Callyourdistributorforinformation.

•Routehosesandcablesawayfromtraf󰘰careas,sharpedges,movingparts,andhotsurfaces.

•Donotkinkoroverbendhosesorusehosestopullequipment.

•Keepchildrenandanimalsawayfromworkarea.

•Complywithallapplicablesafetyregulations.

MISUSE

MISUSE MISUSE

HAZARD

HAZARD HAZARD

Technical

Data

Data Data

Pressure

inallequipmentmanuals.

Relief

Relief Relief

Procedure

Procedure Procedure

whenequipmentisnotinuse.

Warnings

Technical

Data

Data Data

3A1939G 5

Troubleshooting

Troubleshooting

Troubleshooting Troubleshooting

NOTE:

NOTE: NOTE:

Checkallpossibleremediesbeforedisassemblingthepump.

Problem

Problem Problem

Hammeringinpiping.

Highpumptemperature.

Highoutletpressure.

Cause

Cause Cause

Inletoroutletpipediameterstoo
small.

Highpumpspeed.

Inletoroutletconnectionsnot
properlyanchored.

HighInletoroutletpressures.Addpulsationdampeners.

Lowlubricantlevel.Addhoselubetotheproperlevel.

Improperlubricant.

Pumped󰘱uidtemperaturetoo
high.

Highpumpspeed/pump
undersized.

Blockedoutletline.

Narrowedpipediameterdueto
settledsolids.

Solution

Solution Solution

Increasepipesizeoraddpulsation
dampeners.

Reducespeedofpump.

Securepiping.

UseonlyGracohoselubeforlow
temperatureoperation.

ConsultyourGracodistributorfor
maximumtemperaturelimitsof
yourpump.

Reducethepumpspeedorswitch
toalargerpump.

Clearanyobstructionsintheoutlet
line.

Determineifsolidshavesettled
inpipingand󰘱ush/removeas
required.

Viscosityorspeci󰘰cgravityof
pumped󰘱uidtoohigh.

Lowinletpressure.

Low󰘱ow.

Failedhose.

Blockedinletline.

Inletlinetoolongortoosmall.Trytolocatethepumpasnear

Viscosityorspeci󰘰cgravityof
pumped󰘱uidtoohigh.

Failedhose.

ConsultyourGracodistributorfor
suitableoperatingconditionsfor
yourpump.

Checktoseeifthehosehasfailed.
Ifso,replacewithanewhoseand
lubricant.

Clearanyobstructionsintheinlet
line.

tothe󰘱uidsourceaspossible.
Oversizetheinletpipingwhen
possible.

ConsultyourGracodistributorfor
suitableoperatingconditionsfor
yourpump.

Checktoseeifthehosehasfailed.
Ifso,replacewithanewhoseand
lubricant.

6 3A1939G

Troubleshooting

Problem

Problem Problem

Poorhoselife.

Lubricantleaks

Cause

Cause Cause

Chemicalincompatibility.ConsultyourGracodistributorto

Normalwear.

Failureduetopulsations.

Toohighoutletpressure.

Settledsolidsinhose.

Hoselubeleakingfromfrontcover.Coverboltsover-tightened.

Hoselubeleakingfromhose
clamps.

Solution

Solution Solution

seeifyouhavethecorrecthose
foryourapplication.

Thehosemayhavefaileddueto
normalwear.Replaceasrequired.

Ifyoupumpisequippedwitha
pulsationdampener,adjustits
pressure.Ifyoudonothavea
dampener,consultyourGraco
distributor.

Checkitemslistedin“Highoutlet
pressure.”Runningthepump
againstaclosedvalve,evenfora
shortamountoftime,maydamage
hose.

Flushthepumpandhosepriorto
turningthepumpoff.

Refertotorquespeci󰘰cationsin

InstalltheFrontCover,page16.

Pumphousingover󰘰lled.Check
hoselubelevelandadjustas
necessary.

Hosefailedbecauseitwrapped
aroundroller.

Pumpwasoperatedagainsta
closedoutletvalveorblockedline.

Replacehose.Checkpressure
reliefsystem.Checkthatvalves
areopen.Clearanyblockages.

3A1939G

7

Repair

Disassembly

Repair

Repair Repair

Disassembly Disassembly

Before

Before Before

1.Flushthepump.

2.Relievethepressure.

3.Disconnectpowertothepump.

4.Makesurethepumpiselectricallyisolated.

You

Start

You You

Start Start

Unexpectedoperationofthepumpcancause
seriousinjury.Removethefancoveronlyafter
themotorhasbeenlockedout.

Drain

Drain Drain

1.Holdapailunderthedrainplug(17)andunscrew

2.Removetheventplug(15)and󰘱ushthepump

the

Oil

the the

Oil Oil

theplugtodrainthelubricatingoil.Disposeof
theoilproperly.Takecare,astheoilmaybe
contaminatedbythepumped󰘱uid.

housingwithacompatiblesolvent.

Figure1PumpDrainandVent

Remove

Remove Remove

1.Unscrewthesocketheadcapscrews(14)and
washers(13)thatholdthefrontcover(12),
removingthetopscrewandwasherlast.Take
thecoveroffthepump.SeeFig.5,page11.

2.Removethefrontcovergasket(11).

3.Inspectandcleanthesightglass(16)andcover
(12),thensetaside.

the

Front

the the

Front Front

Cover

Cover Cover

8 3A1939G

Repair

Remove

Remove Remove

1.SeeFig5,page11.Removethescrewsholding
themotorfancover(FC).Turnthefanbyhand
untiltheroller(102)stopsatthebottomofthe
pumphousing(1)inthe6o’clockposition.

NOTE:

NOTE: NOTE:
gearboxesmayrequiremanyturnsofthemotor
fantomovetherollertothe6o’clockposition.

2.Removethefourscrews(21)fromeachbarb
clamp(20)ontheinletandoutletportsofthe
pumpandliftofftheclamps.

On EP4 Pumps only:

3.
barbed󰘰ttingpositioningwasherandkeepfor
reuse.Thebottomhalfofthewasheriswelded
inplaceandcannotberemoved.

4.Ifpossible,ensurethatthehoseclamps(104)
arepositionedwiththeclampportionatthetop.
Cutthroughtheclampwithahacksaworrotary
tool.Becarefulnottodamagethehose(103)or
thepumphousing(1).

the

Hose

the the

Hose Hose

LowRPMpumpsandhighratio

Removethetophalfofthe

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.

Figure2CuttheClamp

5.Usingascrewdriver,removetheclamp,then
removetheband.

Figure3RemovetheClamp

Figure4Rollerin3O’ClockPosition

11.Pulltheotherendofthehoseintothepump
housing(1).

12.Removeandsafelydiscardtheusedhose,per
yourfacility’swastedisposalpolicy.

3A1939G 9