Graco 25C536 Parts list manual

Instructions/Parts
Stainless Stainless
StainlessSteel, Steel, Steel,Heavy Heavy HeavyDuty, Duty, Duty,Air Air Air- - -Driven Driven Driven
Agitators Agitators
Agitatorswith with withPressure Pressure PressureTank Tank Tank3A4797B
EN
Radial Radial
Radialpiston piston pistonair air airdriven driven drivenagitators agitators agitatorsfor for formaintaining maintaining maintainingsuspension suspension suspensionand and andeven even even- - -mixing mixing mixingin in inindustrial industrial industrialpaints paints paintsand and and
coatings. coatings.
coatings.For For Forprofessional professional professionaluse use useonly. only. only.
Important Important
ImportantSafety Safety SafetyInstructions Instructions Instructions
Readallwarningsandinstructionsinthismanualbeforeusingthe
equipment.Savetheseinstructions.
100psig(0.7MPa,7bar)pressure
tankMaximumWorkingPressure,70
psig(0.5MPa,5bar)agitatorMaximum
RecommendedOperatingPressure
Seepage3formodelpartnumbersand
approvalsinformation.
PROVENQUALITY.LEADINGTECHNOLOGY.

Contents Contents
Contents
Models...............................................................2
Warnings...........................................................3
Installation..........................................................5
TypicalSystem............................................5
AirRegulatorandMuf󰘱ers............................6
Agitator.......................................................7
Grounding...................................................9
ConnectingHoses........................................9
AirLineFilter...............................................9
Operation...........................................................10
PreparingtheFluid.......................................10
FillingtheTank............................................10
OperatingtheAgitator..................................10
PressureReliefProcedure............................11
SafetyReliefValve.......................................11
Maintenance......................................................12
GreasingtheAirMotor.................................12
AirMotorMuf󰘱er..........................................12
CleaningtheShaft.......................................12
CleaningtheTank........................................12
Service..............................................................13
RemovingtheAirMotor................................13
InstallingtheAirMotor..................................13
ServicingtheAgitatorShaftand
Couplings.......................................14
InstallingtheMotorConversionKit................14
Parts..................................................................15
AllModels...................................................15
TankPartsforModels25C536,25C537,
25C538..........................................17
Accessories........................................................19
Strainer240418...........................................19
Buna-NAirSupplyHose...............................19
Low-PressureRegulatorConversionKit
235041..........................................19
High-PressureRegulatorConversionKit
236680..........................................19
AirRegulatorandFilter202660.....................19
GunAirRegulatorKit235042.......................19
PTFECoatedGasket117574.......................19
NylonFluidSupplyHose..............................19
BottomOutletKit236677..............................19
HeavyDutyAgitator.....................................19
C-clampReplacementKit111381.................19
AntistaticPolyethyleneTankLiners...............19
StainlessSteelAgitatorPaddle
186517..........................................19
Dimensions........................................................20
AirConsumption.................................................21
Notes................................................................22
TechnicalSpeci󰘰cations......................................23
CaliforniaProposition65...............................23
Models Models
Models
Agitators Agitators
Agitatorswith with withPressure Pressure PressureTank Tank Tank
Part Part
PartNo. No. No.Description Description DescriptionApprovals Approvals Approvals
25C536HeavyDutyAgitator
withPressureTank,5Gallon
25C537HeavyDutyAgitator
withPressureTank,10Gallon
25C538HeavyDutyAgitator
withPressureTank,15Gallon
ASME ASME
ASME
2575 2575
2575
II II
II1/2 1/2 1/2G G G
Ex Ex
Exh h hIIB IIB IIBT4 T4 T4Ga/Gb Ga/Gb Ga/Gb
IECEx IECEx
IECExETL ETL ETL17.0019 17.0019 17.0019
ITS17ATEX1001809 ITS17ATEX1001809
ITS17ATEX1001809
0 0
0°C C C≤Tamb Tamb Tamb≤50 50 50°C C C
Agitators Agitators
Agitatorswithout without withoutPressure Pressure PressureTank Tank Tank
Part Part
PartNo. No. No.Description Description DescriptionApprovals Approvals Approvals
25C539HeavyDutyAgitator
(tobeusedwitha5gallontank)
25C540HeavyDutyAgitator
(tobeusedwitha10gallontank)
25C541HeavyDutyAgitator
(tobeusedwitha15gallontank)
2575 2575
2575
II II
II1/2 1/2 1/2G G G
Ex Ex
Exh h hIIB IIB IIBT4 T4 T4Ga/Gb Ga/Gb Ga/Gb
IECEx IECEx
IECExETL ETL ETL17.0019 17.0019 17.0019
ITS17ATEX1001809 ITS17ATEX1001809
ITS17ATEX1001809
0 0
0°C C C≤Tamb Tamb Tamb≤50 50 50°C C C
Motor Motor
MotorConversion Conversion ConversionKit Kit Kit
Part Part
PartNo. No. No.Description Description DescriptionApprovals Approvals Approvals
19A844Toconvertaheavydutyagitator
motorassemblywitharadialpiston
airmotorassembly.
II II
II2 2 2G G GEx Ex Exh h hIIB IIB IIBT4 T4 T4Gb Gb Gb
23A4797B

Warnings
Warnings Warnings
Warnings
Thefollowingwarningsareforthesetup,use,grounding,maintenance,andrepairofthisequipment.Theexclamation
pointsymbolalertsyoutoageneralwarningandthehazardsymbolsrefertoprocedure-speci󰘰crisks.Whenthese
symbolsappearinthebodyofthismanual,referbacktotheseWarnings.Product-speci󰘰chazardsymbolsand
warningsnotcoveredinthissectionmayappearthroughoutthebodyofthismanualwhereapplicable.
WARNING WARNING
WARNINGFIRE FIRE
FIREAND AND ANDEXPLOSION EXPLOSION EXPLOSIONHAZARD HAZARD HAZARD
Flammablefumes,suchassolventandpaintfumes,inwork work
workarea area areacanigniteorexplode.Paintor
solvent󰘱owingthroughtheequipmentcancausestaticsparking.Tohelpprevent󰘰reandexplosion:
•Useequipmentonlyinwellventilatedarea.
•Eliminateallignitionsources;suchaspilotlights,cigarettes,portableelectriclamps,andplastic
dropcloths(potentialstaticarc).
•Groundallequipmentintheworkarea.SeeGrounding Grounding
Groundinginstructions.
•Neversprayor󰘱ushsolventathighpressure.
•Keepworkareafreeofdebris,includingsolvent,ragsandgasoline.
•Donotplugorunplugpowercords,orturnpowerorlightswitchesonoroffwhen󰘱ammable
fumesarepresent.
•Useonlygroundedhoses.
•Holdgun󰘰rmlytosideofgroundedpailwhentriggeringintopail.Donotusepaillinersunlessthey
areantistaticorconductive.
•Stop Stop
Stopoperation operation operationimmediately immediately immediatelyifstaticsparkingoccursoryoufeelashock,Donotuseequipmentuntil
youidentifyandcorrecttheproblem.
•Keepaworking󰘰reextinguisherintheworkarea.
MOVING MOVING
MOVINGPARTS PARTS PARTSHAZARD HAZARD HAZARD
Movingpartscanpinch,cut,oramputate󰘰ngersandotherbodyparts.
•Keepclearofmovingparts.
•Donotoperateequipmentwithprotectiveguardsorcoversremoved.
•Donotwearlooseclothing,jewelry,orlonghairwhileoperatingequipment.
•Equipmentcanstartwithoutwarning.Beforechecking,moving,orservicingequipment,followthe
Pressure Pressure
PressureRelief Relief ReliefProcedure Procedure Procedureanddisconnectallpowersources.
PRESSURIZED PRESSURIZED
PRESSURIZEDEQUIPMENT EQUIPMENT EQUIPMENTHAZARD HAZARD HAZARD
Fluidfromtheequipment,leaks,orrupturedcomponentscansplashintheeyesoronskinand
causeseriousinjury.
•FollowthePressure Pressure
PressureRelief Relief ReliefProcedure Procedure Procedurewhenyoustopspraying/dispensingandbeforecleaning,
checking,orservicingequipment.
•Tightenall󰘱uidconnectionsbeforeoperatingtheequipment.
•Checkhoses,tubes,andcouplingsdaily.Replacewornordamagedpartsimmediately.
3A4797B3

Warnings
WARNING WARNING
WARNINGEQUIPMENT EQUIPMENT
EQUIPMENTMISUSE MISUSE MISUSEHAZARD HAZARD HAZARD
Misusecancausedeathorseriousinjury.
•Donotoperatetheunitwhenfatiguedorunderthein󰘱uenceofdrugsoralcohol.
•Donotexceedthemaximumworkingpressureortemperatureratingofthelowestratedsystem
component.SeeTechnical Technical
TechnicalSpeci󰘰cations Speci󰘰cations Speci󰘰cationsinallequipmentmanuals.
•Use󰘱uidsandsolventsthatarecompatiblewithequipmentwettedparts.SeeTechnical Technical
Technical
Speci󰘰cations Speci󰘰cations
Speci󰘰cationsinallequipmentmanuals.Read󰘱uidandsolventmanufacturer’swarnings.For
completeinformationaboutyourmaterial,requestSDSfromdistributororretailer.
•Donotleavetheworkareawhileequipmentisenergizedorunderpressure.
•TurnoffallequipmentandfollowthePressure Pressure
PressureRelief Relief ReliefProcedure Procedure Procedurewhenequipmentisnotinuse.
•Checkequipmentdaily.Repairorreplacewornordamagedpartsimmediatelywithgenuine
manufacturer’sreplacementpartsonly.
•Donotalterormodifyequipment.Alterationsormodi󰘰cationsmayvoidagencyapprovalsand
createsafetyhazards.
•Makesureallequipmentisratedandapprovedfortheenvironmentinwhichyouareusingit.
•Useequipmentonlyforitsintendedpurpose.Callyourdistributorforinformation.
•Routehosesandcablesawayfromtraf󰘰careas,sharpedges,movingparts,andhotsurfaces.
•Donotkinkoroverbendhosesorusehosestopullequipment.
•Keepchildrenandanimalsawayfromworkarea.
•Complywithallapplicablesafetyregulations.
TOXIC TOXIC
TOXICFLUID FLUID FLUIDOR OR ORFUMES FUMES FUMESHAZARD HAZARD HAZARD
Toxic󰘱uidsorfumescancauseseriousinjuryordeathifsplashedintheeyesoronskin,inhaled,or
swallowed.
•ReadSafetyDataSheet(SDS)toknowthespeci󰘰chazardsofthe󰘱uidsyouareusing.
•Storehazardous󰘱uidinapprovedcontainers,anddisposeofitaccordingtoapplicableguidelines.
BURN BURN
BURNHAZARD HAZARD HAZARD
Equipmentsurfacesand󰘱uidthatisheatedcanbecomeveryhotduringoperation.Toavoidsevere
burns:
•Donottouchhot󰘱uidorequipment.
PERSONAL PERSONAL
PERSONALPROTECTIVE PROTECTIVE PROTECTIVEEQUIPMENT EQUIPMENT EQUIPMENT
Wearappropriateprotectiveequipmentwhenintheworkareatohelppreventseriousinjury,including
eyeinjury,hearingloss,inhalationoftoxicfumes,andburns.Protectiveequipmentincludesbut
isnotlimitedto:
•Protectiveeyewear,andhearingprotection.
•Respirators,protectiveclothing,andglovesasrecommendedbythe󰘱uidandsolventmanufacturer.
43A4797B

Installation
Installation Installation
Installation
Typical Typical
TypicalSystem System System
Besurethatallaccessoriesareproperlyratedtowithstandthepressuresinthesystem.
NOTE:Throughoutthemanual,referencenumbersandlettersinparenthesesrefertonumbersandlettersin󰘰gures
andthepartsdrawings.
Reference Reference
ReferenceSold Sold SoldSeparately Separately Separately- - -Description Description DescriptionReference Reference ReferenceIncluded Included
Included- - -Description Description Description
SHAirsupplyhoseTHTankAirInletHose
SVAirShutoffvalveRVSafetyreliefvalve(farside)
GCWGroundclampandwireBVAirinletballvalve
AHAtomizingairhoseFVFluidoutletballvalve
FHFluidhoseTRTankairregulator
AGAirspraygunAMAirmotor
AFAirinlet󰘰lterARMotorairregulator
TTankAAAgitatorairinlethose
3A4797B5

Installation
Air Air
AirRegulator Regulator Regulatorand and andMuf󰘱ers Muf󰘱ers Muf󰘱ers
Theairmotoriscapableofoperatinginaclockwise
orcounterclockwisedirection,dependingonwhere
theairregulatorismounted.Clockwisedirectionis
preferredforthisbladeorientation
•Whentheairregulatorisinstalledinoneofthe
twolowerportsonthemotor,aclockwiserotation
results,asviewedfromthetopofthemotor.
•Wheninstalledoneithersideinoneofthetwo
upperports,acounterclockwiserotationresults.
•Theportoppositetheregulatormustbeplugged
forthemotortooperate.
Theairregulator,muf󰘱ers,airgauge,nipple
connector,andswivelconnectorarenotfactory
installedonmodels25C539,25C540,and25C541.
Followthedirectionsbelowtoinstalltheseitems:
1.Screwtheswivelconnector(F)(seebelow)into
thedesiredport(upperorlower)inthemotor(K).
2.Screwthenippleconnector(G)intotheair
regulator(H)outlet.Notearrowdirectionson
theregulator.
3.Attachtheairregulatorbyscrewingitintothe
swivelconnector.
4.Installaplug(E)intheportoppositetheregulator
(thisisnecessaryformotoroperation).
5.Attachtheairgauge(J)byscrewingitintothe
holeinthetopoftheairregulator.
6.Installaplug(E)intheregulatorintheport
oppositetheairgauge.
7.Screwonemuf󰘱er(D)intothetopofthemotor.
8.Screwthesecondmuf󰘱erintotheopenporton
thefarsideofthemotorfromtheregulator.
9.Installthethirdmuf󰘱erintheopenportabove
orbelowtheregulator.Anadditional󰘰ttingmay
beneeded(notprovided)tospacetheregulator
fartherawayfromthemotor.
NOTE:Useofthethirdmuf󰘱erisnotnecessary,
butisbene󰘰cialforincreasedaircirculationin
humidconditions.Ifathirdmuf󰘱erisnotused,
theholemustbeplugged(E).
Clockwise Clockwise
ClockwiseAgitator Agitator AgitatorRotation Rotation RotationCounterclockwise Counterclockwise CounterclockwiseAgitator Agitator AgitatorRotation Rotation Rotation
Reference Reference
ReferenceLetter Letter LetterDescription Description
Description
DMuf󰘱ers
EPlugs
FSwivelconnector
GNippleconnector
HAirregulator
JAirgauge
KAirmotor
63A4797B

Installation
Agitator Agitator
Agitator
Toreducetheriskof󰘰reandexplosion,always
maintainaminimumof1in.(25.4mm)clearance
betweentherotatingagitatorpartsandthe
containertopreventsparksfromcontact.
•Ifinstallinganewagitatorontoanewtank,follow
steps1–2,and7–15(models25C536,25C537,
25C538).
•Ifreplacinganestablishedagitator,followsteps
1,3–12,and14–15(models25C539,25C540,
25C541).
1.Relievepressurefromthesystem(if
applicable)byfollowingtheprocedureinthe
PressureReliefProcedure,page11,andremove
thepressuretankcoverfromthetank.
2.Unscrewandremovethehexjamnut(49),plug
(P),ando-ring(R)fromthetankcover.
3.RemovetheupperU-bolt(56).
4.Loosenthetwoagitatorpaddlesetscrews(46)
andremovetheagitatorpaddle(45).
5.On10and15gallontanks,removethelower
U-bolt(56),loosenscrews(54),andslidethe
baf󰘱e(53)offthe󰘱uidtube(12).
6.Unscrewandremovethehexjamnut(49),
gasket(50),andagitatorfromthetankcover.
7.Toinstallthenewagitator,placethegasket(50)
ontopofthetankcovercenterhole.Insertthe
agitatorshaft(47)throughthegasketandcenter
hole.
NOTE:Positiontheairmotorandregulatoras
showninTypicalSystem,page5.
8.Installthejamnut(49)belowthetankcover,
andtighten󰘰rmlytoassureasealbetweenthe
gasket(50)andtankcover.
9.Installtheshaftsupport(44)ontotheshaft
housing(42).
10.ClampwithupperU-bolt(56),clamp(43),lock
washer(41),andnut(55).
TightentheU-boltatapositionleaving
approximately0.015in.(0.006mm)clearance
gapbetweenthethrustwasherandthetopof
theshaftsupport.
11.Onthe10and15gallontanks,placethelower
bearingassembly(66)and(67)ontheshaft.
12.Onthe5gallontank,clampthelowerU-bolt
directlytotheshaftsupport(44)(seebelow).
Slidethebaf󰘱e(53)overthe󰘱uidtube(12)and
positionthebaf󰘱eabout1/2in.(13mm)above
thehighestpointontheagitatorpaddle(45).
ClampinplacewiththelowerU-bolt(56),washer
(41),andnut(55).
Misalignmentbetweentheshaftand󰘱uidtube
maycausetheagitatorshafttobindwhen
clampingtheU-bolt(56)inplace.Loosenif
requiredtoallowshaftrotation.Theagitator
motorshouldrunat20psig(1.4bar)airpressure
whendry.
13.Aligntheagitatorpaddle(45)ontheagitator
shaft(47)asfollows:
•For10and15gallontanks:Alignthetopofthe
paddlehubwiththelowermarkontheagitator
shaft.
•For5gallontanks:Ifa5gallonpailistobe
placedinsidethepressuretank,alignthetop
ofthepaddlehubwiththeuppermarkonthe
agitatorshaft.Ifapailisnottobeplacedinside
thetank,alignthetopofthehubwiththelower
markontheagitatorshaft.Afterthepaddleis
properlyaligned,applylowstrengthsealantto
thetwosetscrews(46)and󰘰rmlysecurethe
paddle.
14.Removetheplugorexistingelbowfromtheair
inletmanifold(5).Installthenewelbow(69)into
thepressuretankairinletmanifold.
15.Connecttheswivelendoftheairhose(70)to
theelbow(69).
3A4797B7

Installation
Table Table
Table1 1 1Agitator Agitator AgitatorInstallation Installation Installation
Ref Ref
RefNo No NoDescription Description
DescriptionRef Ref
RefNo No NoDescription Description
Description
12FluidTube(includedwithmodels
25C536,25C537,25C538)50Gasket
41Washer53AgitatorBaf󰘱e
42ShaftHousing54Screw
43ClampPlate55Nut
44ShaftSupport56U-Bolt
45AgitatorPaddle66Bearing(models25C537,25C538,25C540,
25C541)
46SetScrew67BearingHousing(models25C537,25C538,
25C540,25C541)
47AgitatorShaftPPlug
49JamNutRO-ring
83A4797B

Installation
Grounding Grounding
Grounding
Theequipmentmustbegroundedtoreducethe
riskofstaticsparking.Staticsparkingcancause
fumestoigniteorexplode.Toreducetherisk
ofstaticsparking,themountingcoverandall
electricallyconductiveobjectsordevicesinthe
sprayareamustbeproperlygrounded.
Agroundwireandclampareincludedwiththetank.
•Togroundtheagitator,connectoneendofthe
groundwire(GW)tothegroundconnector(77)on
agitatordriveguard(74).Connecttheotherendof
thegroundwiretoatrueearthground.
•Togroundthepressuretank,connectoneendof
a12awg(1.5mm2)minimumgroundwiretothe
pressuretankandtheotherendofthewiretoa
trueearthground.
Connecting Connecting
ConnectingHoses Hoses Hoses
Installanairinlet󰘰lter(AF)upstreamfromtheair
inletballvalve(17)toremovedirtandmoisturefrom
thecompressedairsupply.Connectanairsupply
hose(SH)betweentheairinletballvalveandtheair
󰘰lterairoutlet.
Connecttheatomizingairhose(AH)totheairspray
gun(AG)fromanairoutletoftheairmanifold.
Connecta󰘱uidhose(FH)betweenthe󰘱uidoutlet
ballvalve(18)andtheairspraygun(AG)󰘱uidinlet.
Recommended Recommended
RecommendedHose Hose HoseSizes Sizes Sizes
Generalpurposehosesizesarelistedbelow.
FluidAir
Forrunsof:Use:Forrunsof:Use:
0to35ft(0
to11m)
3/8"ID0to50ft(0
to15m)
5/16"ID
35to100ft
(11to30m)
1/2"ID50to100ft
(15to30m)
3/8"ID
100to200ft
(30to61m)
3/4"ID100ft+(30
m+)
1/2"ID
Air Air
AirLine Line LineFilter Filter Filter
Airline󰘰ltersremoveharmfuldirtandmoisturefrom
thecompressedairsupply.Orderpart106148for
3/8nptor106149for1/2npt.
3A4797B9

Operation
Operation Operation
Operation
Personalinjury,suchassplashingintheeyes,
mayresultfrompressureinthetank.Alwaysfollow
thePressureReliefProcedure,page11before
openingthetankcoveror󰘰llport.
Personalinjuryorequipmentdamagemayresult
fromlifting/fallingheavyequipment.Toavoid
personalinjuryorequipmentdamage:
•Donotliftthedrumcoverandagitatorwithout
properassistance.
•Donotwalkorstandbeneatharaisedelevator.
Preparing Preparing
Preparingthe the theFluid Fluid Fluid
Preparethe󰘱uidaccordingtomanufacturer
instructions.Strainthe󰘱uidtoremovelargeparticles
thatcouldclogthespraygunorthesiphontube.
Filling Filling
Fillingthe the theTank Tank Tank
Agitatorsareusedtokeepsolidsinsuspension,
whichassistsinkeepingsolidsfromcloggingthe
siphontube.Ifsolidshavesettledinthecontainer,
useashakerorsomeotherdevicetothoroughly
agitatethe󰘱uidbeforeinstallingandoperatingthe
agitator.
1.FollowthePressureReliefProcedure,page11.
2.Fillthe󰘱uidsupplycontainer(throughthe󰘰llport
inthecover,orremovethecoverandpour󰘱uid
directlyintothetank)toabout3or4inches(75
to100mm)abovetheagitatorblade.
Ifutilizinga5-gallontank,useoneofthefollowing
methodsforpaintplacement:
a.Removethecoverandplacea5-gallonpail
of󰘱uidinthe5-gallontank.
b.Removethecoverandplacea5-gallon
antistaticpolyethylenelinerinthe5-gallon
tank.Pourthe󰘱uidintotheantistatic
polyethyleneliner.
NOTE:Ifa5-gallonpailisusedinsidethe
tank,anadjustmentisrequiredtotheagitator
paddlepositiontoavoidinterference.See
step12inAgitator,page7foradjustment
information.
3.Besurethegroundwireisattached.
4.Replacethe󰘰llercaporcover,tightenthe
c-clamphandlesto8-10ft-lbs,approximately1/2
to1turnpasthandtight.
Operating Operating
Operatingthe the theAgitator Agitator Agitator
Over-pressurizingthetankoraccessoriescould
causeaparttorupture.Toreducetheriskof
seriousinjury,suchassplashing,orproperty
damage,neverexceedthemaximumairand󰘱uid
workingpressureofthelowestratedcomponent
inyoursystem.
NOTICE NOTICE
NOTICE
Toavoiddamagingtheequipment,donotoperate
theagitatoratahighspeedforalongperiodof
time.Excessiveagitatorspeedcancausefoaming
of󰘱uid(makingthe󰘱uidunusable),vibration,and
increasedwearonparts.Onlyagitatethe󰘱uid
enoughtomaintainevenmixing.
1.Fillthepressuretank.See
FillingtheTank,page10.
2.Besuretheairinletballvalve(17)isclosed.
3.Closetheairregulatorvalves(31,38)byturning
theknobscounterclockwise.
4.Turnontheairsupply.
5.Opentheairsupplyinletballvalve(17).
6.Tostarttheagitator,slowlyopentheagitatorair
regulatorvalve(38).Adjustthespeedofthe
agitator,toabout40to60rpm,ifneeded.
7.Openandadjustthetankairregulator(31)tothe
approximatepressuredesired.
8.Openthe󰘱uidoutletballvalve(18).
9.Turnontheatomizingairtotheairspraygun.
Testsprayasmallareaandadjustthepressure
asnecessary.Alwaysusethelowestpossibleair
pressuretoobtainthedesiredresults.
10.Tostoptheagitator,turntheairregulator
counterclockwisetoreducepressuretozero,or
closetheairinletballvalve(17)tothetank.
103A4797B

Operation
Pressure Pressure
PressureRelief Relief ReliefProcedure Procedure Procedure
FollowthePressureReliefProcedure
wheneveryouseethissymbol.
Theagitatorandpressuretanksremainpressurized
untilpressureismanuallyrelieved.Tohelpprevent
seriousinjuryfromsplashing󰘱uidandmoving
parts,followthisprocedure:
•Beforeyoucheckorserviceanypartofthespray
system
•Beforeyouloosenorremovethepressuretank
coverof󰘰llport
•Wheneveryoustopspraying
1.Shutofftheairsupplytothetankbyclosingthe
airinletvalve(17).
2.Openthedraincock󰘰tting(7)byturningit
counterclockwise.
3.Waituntilthereisnoairescapingthroughthe
draincock󰘰ttingbeforeremovingthecoveror
openingthe󰘰llport.
4.Leavethedraincock󰘰tting(7)openuntilyou
havereinstalledthecoveror󰘰llport.
NOTE:Tightenthec-clampto8-10ft-lbs
(approximately1/2to1turnpasthandtight).
Safety Safety
SafetyRelief Relief ReliefValve Valve Valve
Asafetyreliefvalve(4)automaticallyrelievesthe
tankpressurewhentheairpressureexceeds95to
100psi(0.5to0.6MPa,6.5to7bar).
Eachweek,checktheworkingorderofthesafety
reliefvalve.
Onlyasatest ,raisetheairpressure
to95to105psi(0.5to0.6MPa,6.5to7.1bar).If
thesafetyreliefvalvedoesnotrelievethepressure,
replaceitimmediately.Donotattempttorepairit.
Thesafetyreliefvalvewillresetautomaticallywhen
thepressureisrelieved.
3A4797B11

Maintenance
Maintenance Maintenance
Maintenance
Movingparts,suchasanimpellerblade,cancut
oramputate󰘰ngers.Toreducetheriskofserious
injury,alwaysshutofftheagitatoranddisconnect
theairlinebeforecheckingorrepairingtheagitator.
Beforeperforminganymaintenanceprocedure,
followthePressureReliefProcedure,page11.
Greasing Greasing
Greasingthe the theAir Air AirMotor Motor Motor
Afterevery20millionrevolutionsoreverythree
tofourmonths(whichevercomes󰘰rst),grease
themotorneedlebearing.Recommendedgrease:
MOBILGREASEXHP222SPECIALorequivalent
withminimum󰘱ashpointtemperatureof399.2°F
(204°C).
1.FollowthePressureReliefProcedure,page11.
2.Removethemotortopcover(103).
3.Usingamanualgreasegun,pushgreaseinto
the21RC󰘰tting(102)untilgreaseisseenbelow
thetopwasher(109a).
Air Air
AirMotor Motor MotorMuf󰘱er Muf󰘱er Muf󰘱er
Dependingontheenvironmentofthemotor,
periodicallycheckthecleanlinessoftheairmotor
muf󰘱er.Dirtyorcloggedairmuf󰘱ersresultin
decreasedmotoref󰘰ciencyandmaycausethemotor
torunirregularly.Ifthemuf󰘱erisdirtyorclogged,
replaceitwithanewmuf󰘱er.
Cleaning Cleaning
Cleaningthe the theShaft Shaft Shaft
Eachweek,cleananydried󰘱uidfromaroundthe
bearing(66)areaoftheshaft(47)andinspectthe
bearingforcrackingorexcessivewear.
Cleaning Cleaning
Cleaningthe the theTank Tank Tank
Toavoid󰘰reandexplosion,alwaysgroundthe
equipmentandwastecontainer.Toavoidstatic
sparkingandinjuryfromsplashing,always󰘱ushat
thelowestpossiblepressure.
•Flushequipmentonlyinawell-ventilatedarea.
•Flushatthelowestpressurepossible.Check
connectorsforleaksandtightenasnecessary.
•Flushwitha󰘱uidthatiscompatiblewiththe
󰘱uidbeingdispensedandtheequipmentwetted
parts.
1.FollowthePressureReliefProcedure,page11.
2.Followtheprocedurebelowtoforcethe󰘱uid
backthroughthehoseandintothetank:
a.Loosenthespraygunaircapretainingring
abouttwoturns.
b.Holdaragovertheaircapandtriggerthe
gunforafewseconds,untilthe󰘱uidisforced
backintothetank.
3.Removethetankcover.
4.Emptythe󰘱uidfromthetankandpourasuitable
amountofsolventintoit
NOTE:Besurethatthesolventiscompatible
withthe󰘱uidbeingsprayedandwiththe
wettedmaterialsinthetank.Referto
TechnicalSpeci󰘰cations,page23forinformation
onwettedpartmaterials.
5.Replacethetankcoverandtightenthec-clamps,
to8-10ft-lbs,approximately1/2to1turnpast
handtight.
6.Closethedraincock󰘰tting(7).
7.Turnontheairsupply.
8.Holdametalpartofthegunagainstagrounded
metalwastecontainerandtriggertheguninto
thewastecontaineruntilcleansolventcomes
fromthegun.
9.Removethesolventfromthesystemand
wipetheinsideofthetankandtherestofthe
equipmentcleanwithasolvent-dampenedrag
123A4797B

Service
Service Service
Service
Movingparts,suchasanimpellerblade,cancut
oramputate󰘰ngers.Toreducetheriskofserious
injury,alwaysshutofftheagitatoranddisconnect
theairlinebeforecheckingorrepairingtheagitator.
Beforeperforminganyserviceprocedure,followthe
PressureReliefProcedure,page11.
Iftheairmotorrequiresmorethaninstallationofa
servicekit,itisusuallyquickestandeasiesttosend
ittoaGracodistributorforrepairorreplacement.A
motorrebuildkit(25M535)isavailable.Seethemotor
rebuildkitmanual3A5050formoreinformation.
Removing Removing
Removingthe the theAir Air AirMotor Motor Motor
Toremovetheairmotorforservice,followthese
steps,
1.Removethescrew(75)holdingtheguardand
thenremovetheguard(74).
2.Removethefourscrews(26)securingthemotor
tothemountingbracket(58).
3.Removethethreescrews(35)securingthe
motor(34)theadapterplate(22).
4.Disconnecttheairregulator(38).
Installing Installing
Installingthe the theAir Air AirMotor Motor Motor
Toinstalltheairmotor,followthesesteps.
1.Securethemotor(34)totheadapterplate(22)
usingthreescrews(35).Torqueto150–170
in-lbs(17–19N•m).
2.Installtheuppercouplinghalf(52b)onthemotor
shaft.Lightlytightenthesetscrew.Youwill
tightenitfurtherinalaterstep.
3.Installthelowercouplinghalf(52c)onthe
agitatorshaft(47).Donottightenthesetscrew
atthistime.
4.Installthemotor(34)andadapterplate(22)
assemblyonthetopofthebracket(58)using
thefourscrews(26).Donottightenthescrews
securelyatthistime.
3A4797B13

Service
Servicing Servicing
Servicingthe the theAgitator Agitator AgitatorShaft Shaft Shaftand and and
Couplings Couplings
Couplings
Setting Setting
Settingthe the theAgitator Agitator AgitatorShaft Shaft ShaftCoupling Coupling Coupling
1.Withtheagitatorshaft(47)pushedupagainst
thewasher(48),securethelowerportionofthe
couplinghalf(52c)totheshaftbytighteningthe
couplingsetscrewagainstthe󰘱atontheshaft.
Leaveabouta0.015in.(0.38mm)gapbetween
thecouplinghalfandwasher(48).
2.Aligntheuppercoupling(52b)withthelower
couplingandtightenthefourscrews(26).
Tightento150–170in-lbs(17–19N•m).Leave
a0.015in.(0.38mm)gapbetweeneachofthe
couplinghalvesandthespider(52d).Tightenthe
setscrewonthelowercoupling(53b).
3.Connecttheairregulator(38).Checkfor
properalignmentbyrunningtheagitatoratlow
pressuresandspeeds.Ifnecessary,adjustthe
alignmentbylooseningandretighteningthefour
adapterplatescrews(26).
Replacing Replacing
Replacingthe the theAgitator Agitator AgitatorShaft Shaft Shaft
1.Removetheagitatorpaddle(45).Removethe
setscrewfromthelowercoupling(52b).Pullout
theagitatorshaft(47)andinstallthenewshaft.
Replacetheagitatorpaddle(45).
2.Withtheagitatorshaft(47)pushedupagainst
thewasher(48),securethelowerportionofthe
couplinghalf(52b)totheshaftbytighteningthe
couplingsetscrewagainstthe󰘱atontheshaft.
Leaveabouta0.015in.(0.38mm)gapbetween
thecouplinghalfandwasher(48).
Replacing Replacing
Replacingthe the theShaft Shaft ShaftSeals Seals Seals
1.Removetheguardmountingscrew(75)and
removetheguard(74).
2.Removethethreecapscrews(51)andwashers
(40)fromthemountingbracket(58),andremove
theairmotorassembly.
3.Withairmotorassemblyremoved,removethe
setscrewfromthelowercouplinghalf(52b).Pull
outtheagitatorshaft(47).
4.Removethehexnut(49)andremovetheshaft
housing(42).Removetheseals(42a)fromthe
shafthousing,andinstallthenewseals.
5.Reinstalltheshafthousingandshaft.Use
installationstepslistedinSettingtheAgitator
ShaftCoupling.
Installing Installing
Installingthe the theMotor Motor MotorConversion Conversion ConversionKit Kit Kit
Followthesestepstoinstallthemotorconversion
kit19A844.
1.Removetheexistingmotorandgearbox.See
manual308371forinstructions.
2.Installtheairmotor.See
InstallingtheAirMotor,page13and
SettingtheAgitatorShaftCoupling,page14.
3.Installtheairregulatorandmuf󰘱ers.See
AirRegulatorandMuf󰘱ers,page6.
4.Attachthe󰘰ttings(36,8)andthehose(70)to
completetheconversion.
143A4797B

Parts
Parts Parts
Parts
All All
AllModels Models Models
1
Locatethebottomshoulderoftheshaft(47)
againstthewasher(48)whenassembling
thecoupler(52).
2
Bearings66and67arenotusedonthe
5-gallonmodel.AttachtheU-bolt(56)tothe
supportshaft(44).
3
Applylow-strength(cyanoacrylate)thread
sealant.
Followrecommendedtorquespeci󰘰cationsfound
intheInstallationsectionofthismanual.
3A4797B15

Parts
Ref Ref
Ref
No. No.
No.Part Part
PartNo. No. No.Description Description DescriptionQty Qty
Qty
8**100030Bushing1
22**17R038Plate,Adapter,Agitator1
26**100057Screw,Cap,SocketHead4
34**25C675Motor,Air,RotaryPiston;
includes36,37,38,391
35**124313Screw,Shcs,M6-1x16
mm,StainlessSteel3
36156823Fitting,Union,Swivel2
37156971Fitting,Nipple,Short1
38116513Regulator,Air1
39108190Gauge,Pressure,Air1
40100020Washer,Lock3
41104123Washer,Lock,Spring6
42236092HousingAssembly,Shaft;
includes42aand42b1
42a103553Seal,shaft1
42b104431Seal,shaft1
43112533Plate,Clamp1
44210576Support,Shaft;includes
item661
45*236098Paddle,Agitator;plastic1
46112230Screw,Set,Sch2
188886
Shaft,Agitator;15inches;
Models25C536and
25C539
1
188887
Shaft,Agitator;21inches;
Models25C537and
25C540
1 47
188888
Shaft,Agitator;31inches;
Models25C538and
25C541
1
Ref Ref
Ref
No. No.
No.Part Part
PartNo. No. No.Description Description DescriptionQty Qty
Qty
48104373Washer,Thrust2
49188784Nut,Jam,Hex1
50196309Gasket3
51102598Screw,Cap,SocketHead3
52**17R478Coupling,Flexible1
53171989Baf󰘱e,Agitator1
54112222Screw,Cap,Sch2
55112223Nut,Hex,Regular6
56110278Bolt,U2
58181749Bracket,Mounting1
66171970
Bearing,PTFE;included
withmodels25C540and
25C541only
1
67187324
Housing,Bearing;included
withmodels25C540and
25C541only
1
69112307Fitting,StreetElbow1
70160023Hose,Coupled1
74194701Guard,Agitator,Drive1
75100078Screw,ThreadForming,
HexHead1
76157021Washer,Lock,Int1
77111593Screw,Grounding1
78186620Label,Symbol,Ground1
80▲17P806SafetyTag(notshown)1
▲Replacementsafetylabels,signs,tags,and
cardsareavailableatnocost.
*Awelded304stainlesssteelpaddleisavailable.
Orderpartnumber186517.
**IncludedwithMotorConversionKit19A844.
163A4797B

Parts
Tank Tank
TankParts Parts Partsfor for forModels Models Models25C536, 25C536, 25C536,25C537, 25C537, 25C537,25C538 25C538 25C538
3A4797B17

Parts
Ref Ref
Ref
No. No.
No.Part Part
PartNo. No. No.Description Description DescriptionQty Qty
Qty
1100361Plug,Pipe1
2100840Fitting,Elbow,Street2
3164724Hose,Coupled1
4103347Valve,Safety;100Psi1
5189016Manifold,Air,Inlet1
6112306Plug,Pipe,StainlessSteel;
3/8Npt1
7101759Fitting,Cock,Drain1
8100030Bushing;1/8-27npt(f)x
1/4-18npt(m)1
9112538Fitting,Elbow,Street;90
Degree1
10176347Label,Identi󰘰cation1
11110475Fitting,Tee,Street1
171976Tube,13inches;Model
265C5361
171975Tube,18inches;Model
265C5371
12
171974Tube,29inches;Model
265C5381
14156849Pipe,Nipple1
15171988Gasket1
16110756Elbow,Street;90Degree1
17208390
Valve,Ball
3/8-18npsm(m)x3/8-18
npt(m)
1
18237533
Valve,Ball;316Stainless
Steel
3/8-18npsm(m)x3/8-18
npt(m)
1
Ref Ref
Ref
No. No.
No.Part Part
PartNo. No. No.Description Description DescriptionQty Qty
Qty
20210575Cap,Filler1
21159239Fitting,Nipple,Pipe
Reducing1
23▲175078Label,Warning1
25104813Plug,Pipe1
236087
TankAssembly,Pressure;
5Gallon,Model25C536;
includesgasket117571
1
236088
TankAssembly,Pressure;
10Gallon,Model25C537;
includesgasket117571
1 27
236089
TankAssembly,Pressure;
15Gallon,Model25C538;
includesgasket117571
1
15D059
Liner,Tank;5Gallon,
Model25C536;qtyof20
(notshown)
1
15D060
Liner,Tank;10Gallon,
Model25C537;qtyof20
(notshown)
1 29
15D061
Liner,Tank;15Gallon,
Model25C538;qtyof8
(notshown)
1
30160430Gauge,Pressure,Air1
31171937Regulator,Air1
32155665Union,Adapter1
60222011Clamp,Grounding1
80▲17P806SafetyTag(notshown)1
▲Replacementsafetylabels,signs,tags,and
cardsareavailableatnocost.
183A4797B

Accessories
Accessories Accessories
Accessories
Strainer Strainer
Strainer240418 240418 240418
300psi(2.1MPa,21bar)MaximumWorking
Pressure
Installatthetankairinlettoremovedirtandmoisture
fromtheairsupply,oratthetank󰘱uidoutletto
removeparticlesfromthepaintwhichcouldclogthe
spraygunnozzle.
Buna Buna
Buna- - -N N NAir Air AirSupply Supply SupplyHose Hose Hose
200psi(1.4MPa,14bar)MaximumWorking
Pressure
5/16”ID;cpld1/4npsm(f)swivel
Low Low
Low- - -Pressure Pressure PressureRegulator Regulator RegulatorConversion Conversion Conversion
Kit Kit
Kit235041 235041 235041
5psi(0.1MPa,1bar)WorkingPressure.0to15psi
(0to0.1MPa,0to1bar)regulatedpressurerange
Toconverttoalow-pressureregulatorassembly.
High High
High- - -Pressure Pressure PressureRegulator Regulator RegulatorConversion Conversion Conversion
Kit Kit
Kit236680 236680 236680
100psi(0.7MPa,7bar)WorkingPressure.0to100
psi(0to0.7MPa,0to7bar)regulatedpressure
range
Toconverttoahigh-pressureregulatorassembly
Air Air
AirRegulator Regulator Regulatorand and andFilter Filter Filter202660 202660 202660
100psi(0.7MPa,7bar)MaximumWorkingPressure
Forairregulationand󰘰ltration
Gun Gun
GunAir Air AirRegulator Regulator RegulatorKit Kit Kit235042 235042 235042
100psi(0.7MPa,7bar)WorkingPressure
Tosupplyatomizingairtoaspraygunfromthe
pressurepot
PTFE PTFE
PTFECoated Coated CoatedGasket Gasket Gasket117574 117574 117574
Optionalreplacementforstandard117571gasket.
Nylon Nylon
NylonFluid Fluid FluidSupply Supply SupplyHose Hose Hose
300psi(2.1MPa,21bar)MaximumWorking
Pressure
3/8”ID;cpld3/8npsm(fbe)swivel;neoprenecover
Bottom Bottom
BottomOutlet Outlet OutletKit Kit Kit236677 236677 236677
Forbottomoutlet󰘱uidfeeding
Heavy Heavy
HeavyDuty Duty DutyAgitator Agitator Agitator
Toconverttoaheavydutyagitatorassembly.
Recommendedfor󰘱uidviscositiesover1000cP.
•236661 236661
2366615-gallontanksize
•236662 236662
23666210-gallontanksize
•236663 236663
23666315-gallontanksize
C C
C- - -clamp clamp clampReplacement Replacement ReplacementKit Kit Kit111381 111381 111381
ToreplacethepressuretankC-clampassembly.The
kitincludestheT-handle,C-clamp,pin,andcotter
pin.
Antistatic Antistatic
AntistaticPolyethylene Polyethylene PolyethyleneTank Tank TankLiners Liners Liners
Liners󰘰tinsidethetank.Foreaseofcleanupand
maintenance.
•15D059 15D059
15D0595-gallontanksize(Quantityof20)
•15D060 15D060
15D06010-gallontanksize(Quantityof20)
•15D061 15D061
15D06115-gallontanksize(Quantityof8)
Stainless Stainless
StainlessSteel Steel SteelAgitator Agitator AgitatorPaddle Paddle Paddle
186517 186517
186517
Materialof304stainlesssteelweldedconstruction.
Replacesplasticagitatorpaddle236098.
3A4797B19

Dimensions
Dimensions Dimensions
Dimensions
Reference Reference
ReferenceDimension Dimension
DimensionReference Reference
ReferenceDimension Dimension
Dimension
A19in.(483mm)D
5gallons:13.2in.(335mm)
10gallons:18.2in.(462mm)
15gallons:28.9in.(735mm)
B14in.(356mm)
C12.6in(320.5mm)E
5gallons:30.5in.(775mm)
10gallons:33.9in.(860mm)
15gallons:44.6in.(1132mm)
Reference Reference
ReferenceDimension Dimension
DimensionReference Reference
ReferenceDimension Dimension
Dimension
A
25C539:25.5in.(648mm)
25C54031.3in.(794mm)
25C54141.5in.(1054mm)
B11.7in.
(297mm)
203A4797B