Graco 25C528 Parts list manual

Instructions/Parts
Air Air
Air- - -Driven Driven DrivenAgitators Agitators Agitators3A4792C
EN
Radial Radial
Radialpiston, piston, piston,pneumatic pneumatic pneumaticmotor motor motordriven driven drivenagitators agitators agitatorsfor for formaintaining maintaining maintainingsuspension suspension suspensionand and andeven even evenmixing mixing mixingin in inindustrial industrial industrial
paints paints
paintsand and andcoatings. coatings. coatings.For For Forprofessional professional professionaluse use useonly. only. only.
Important Important
ImportantSafety Safety SafetyInstructions Instructions Instructions
Readallwarningsandinstructionsinthismanualandinyour
associatedcomponentmanualsbeforeusingtheequipment.Save
theseinstructions.
70psi(0.5MPa,5bar)Maximum
RecommendedWorkingPressure
Seepage3formodelpartnumbersand
approvalsinformation.
PROVENQUALITY.LEADINGTECHNOLOGY.

Contents Contents
Contents
Models...............................................................3
RelatedManuals................................................3
Warnings...........................................................4
Installation..........................................................6
AirRegulatorandMuf󰘱ers............................7
Agitator.......................................................8
Grounding...................................................9
AirLineAccessories.....................................11
AirRequirements.........................................11
Operation...........................................................12
AgitatorOperation........................................12
FindingtheProperAgitatorSpeed................12
PressureReliefProcedure............................12
Maintenance......................................................13
GreasingtheAirMotor.................................13
AirMotorMuf󰘱er..........................................13
CleaningtheShaft.......................................13
Service..............................................................14
RemovingtheAirMotor................................14
AligningtheOutletHousing—25C534,
25C535Only..................................15
InspectingtheShaftandAgitatorBlades—
Model25C530Only........................15
Parts..................................................................16
Model25C528.............................................16
Model25C533.............................................17
Model25M481.............................................18
Model25C529.............................................19
Models25C534and25C535........................20
Model25C530.............................................21
Models25N881and25N882........................22
Accessories........................................................22
SensorKit25C373.......................................22
Dimensions........................................................23
MountingHoleLayout.........................................25
AirConsumption.................................................25
TechnicalSpeci󰘰cations......................................26
CaliforniaProposition65...............................27
23A4792C

Models
Models Models
Models
Part Part
PartNo. No. No.Description Description DescriptionRecommended Recommended Recommended
Agitator Agitator
Agitator
Rotation Rotation
Rotation
Approvals Approvals
Approvals
25C528
StainlessSteelDirectDrive,
30/55Gallon,
OneSS5.5"Propeller
Clockwise
25C533
CarbonSteelDirectDrive,
30/55Gallon,
TwoAlum5.5"Propellers
Clockwise
25M481
StainlessSteelDirectDrive,
30/55Gallon,
OneSS8"Impeller
Clockwise
25C534
StainlessSteelDirectDrive,
Helix,
BungMount
Clockwise
25C535
CarbonSteelDirectDrive,
Helix,
BungMount
Clockwise
25C530
StainlessSteelDirectDrive,
55Gallon,
BungMount,
ExpandingBlade
Counter
Clockwise
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
25N881In-Drum,
1.5”BungMountClockwise
25N882In-Drum,
2”BungMountClockwise
II II
II2 2 2G G GEx Ex Exh h hIIB IIB IIBT4 T4 T4Gb Gb Gb
25C529
CarbonSteelDirectDrive,
55Gallon,
SideMount,
TwoAluminum5.5"
Propellers
Clockwise
25C765
Kit,MotorwithAirRegulator
(toreplacedrivemotoron
existingagitators)
II II
II2 2 2G G GEx Ex Exh h hIIB IIB IIBT4 T4 T4Gb Gb Gb
Related Related
RelatedManuals Manuals Manuals
ManualNumberTitle
306287ElevatorsandPumpSupports
308466StainlessSteel,PassivatedDrumCovers
3A5050MotorRepairManual
3A4792C3

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.
43A4792C

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.
3A4792C5

Installation
Installation Installation
Installation
Toreducetheriskof󰘰reandexplosion,always
maintainaminimumof1in.(25.4mm)clearance
betweentherotatingagitatorpartsandthe
containertopreventsparksfromcontact.
NOTE:Throughoutthemanual,referencenumbers
andlettersinparenthesesrefertocalloutsin󰘰gures
andthepartsdrawings.
SeeAirLineAccessories,page11forpartsnot
includedinyoursystem.
Table Table
Table1 1 1Typical Typical TypicalInstallation Installation Installation
ReferenceDescription
SVAirShutoffValve
AFAirLineFilter
MMotor
ALSupplyLine,Air-In
AGAirPressureGauge
RRegulator
63A4792C

Installation
Air Air
AirRegulator Regulator Regulatorand and andMuf󰘱ers Muf󰘱ers Muf󰘱ers
Theairmotoriscapableofoperatinginaclockwise
orcounterclockwisedirection,dependingonwhere
theairregulatorismounted.
•Whentheairregulatorisinstalledinoneofthe
twolowerportsonthemotor,aclockwiserotation
results,asviewedfromthetopofthemotor.
•Wheninstalledoneithersideinoneofthetwo
upperports,acounterclockwiserotationresults.
•Theportoppositetheregulatormustbeplugged
forthemotortooperate.
Theairregulator,muf󰘱ers,airgauge,nipple
connector,andswivelconnectorarenotfactory
installed.Followthedirectionsbelowtoinstallthese
items:
1.Screwtheswivelconnector(F)intothedesired
port(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: NOTE:
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
3A4792C7

Installation
Agitator Agitator
Agitator
Toreducetheriskof󰘰reandexplosion,always
maintainaminimumof1in.(25.4mm)clearance
betweentherotatingagitatorpartsandthe
containertopreventsparksfromcontact.
Models Models
Models25C528, 25C528, 25C528,25C533, 25C533, 25C533,and and and25M481 25M481 25M481
1.Markanddrillholesinthecovertomountthe
agitator.SeeMountingHoleLayout,page25for
dimensions.
2.Installtheagitatorinthecoverofthe󰘱uid
supplytankwiththegasket(29)inplace.See
Model25C528,page16,Model25C533,page17,
andModel25M481,page18.
3.Positiontheairmotorsotheairlineeasily
attachestotheairregulatorinletwithout
obstructinganyothersystemcomponents.
4.Boltinplace(mountingboltsnotincluded).
Model Model
Model25C529 25C529 25C529
Mounttheagitatorontheedgeofthedrumortank
andsecurelytightentheclampscrew(6).Squeeze
theendoftheretainer(17)tosetinplace.See
Model25C529,page19.
Toadjusttheangleoftheagitatorinthedrum,loosen
thebracketscrew(4),andpositiontheairmotorso
theairlineeasilyattachestotheairregulatorinlet
withoutobstructinganyothersystemcomponents.
Models Models
Models25C534 25C534 25C534and and and25C535 25C535 25C535
Installtheagitatorinthecontainercoverbyscrewing
thehelix(5)throughthedrumbungholeand
screwingtheagitatorhousing(3)intothebung
hole.Torquethesocketheadscrew(2)to150–170
in-lbs(17–19N•m).Torquethehexheadcap
screw(14)to80–100in-lbs(9–11N•m).See
Models25C534and25C535,page20.
Positiontheairmotorsotheairlineeasilyattaches
totheairregulatorinletwithoutobstructinganyother
systemcomponents.
Model Model
Model25C530 25C530 25C530
Toinstalltheagitatorinthecontainercover,lowerthe
shaft(2)withfoldingbladeassemblies(5,6)through
thedrumbunghole,thenscrewthebungadapter(4)
intothebunghole.SeeModel25C530,page21.
Positiontheairmotorsotheairlineeasilyattaches
totheairregulatorinletwithoutobstructinganyother
systemcomponents.
Duetovariabilityindrumheights,thelowestsetof
bladesmaycontactthebottomofthedrum.Ifthe
bungadapter(4)doesnotfullyseat,orifresistance
isfeltwheninstallingtheagitator,movetheblades
uptheshaft.
Tomovetheblades,loosenthesetscrews(SS)in
thecouplerandslidetheassemblyupordowntothe
desiredposition.Thesetscrewmustalwaysremain
onthetop,withthebladeshangingdown,sothe
bladesareabletopassintoandoutofthebunghole.
Figure1AdjustableBladeAssemblies
Toreducetheriskof󰘰reandexplosion,when
usingamodi󰘰eddrum,checkthatthereisno
interferencebetweenthebaseofthedrumandthe
shaftoftheagitatortoavoidsparksfromcontact.
NOTICE NOTICE
NOTICE
Keeptheagitatortightlymountedtothedrumbung
topreventdamagetothethreadsfromvibration.
Angled Angled
AngledAdapter Adapter Adapter16H294 16H294 16H294— — —Model Model Model25C530 25C530 25C530
only only
only
Iftheagitatorisusedonadrumwithanoff-center
bungandthebladescontactthesideofthedrum,the
angledadapter16H294mustbeused.
1.Threadthelockingring(28)ontotheangled
adapter(27)byhand,asfarasitwillgo.
83A4792C

Installation
2.Threadtheangledadapterintothebunguntil
itbottomsout,thenbackitoutuntilthewidest
portionoftheadaptertopispointingjusttothe
leftofdrumcenter.
Figure2AngledAdapterJustLeftofCenter
3.Turndownthelockingringuntilitcontactsthe
drum.Useanappropriatelysizedpipewrenchor
adjustablewrenchtotightentheadapteruntilthe
widestportionoftheadaptertopisinlinewiththe
drumcenter.
Models Models
Models25N881 25N881 25N881and and and25N882 25N882 25N882
SeeModels25N881and25N882,page22.
1.Determinetheagitatorshaftsize:7/16"(11.1
mm)or1/2"(12.4mm)square.Determinethe
sizeoftheshaftadapter(9).Selectthesizeby
placingtheadaptersontothebuilt-inagitator
shaftinsidethedrum.Usethesmallestadapter
thatwill󰘰t.Thereshouldonlybeasmallamount
ofslipbetweentheadapternutandtheshaft.
2.Attachtheshaftadapter(9)tothe󰘱atsideof
themotorshaftclosetothebottomofthemotor.
Tightenthesetscrew(12)securelyto8–9ft-lbs
(11–12N•m).NOTE:Thereisapproximately1/2"
(12mm)ofadjustmenttraveloftheadaptershaft
onthemotorshaftifneededforlateradjustment.
3.Torquethesocketheadscrew(8)to12.5–14
ft-lbs(17–19N•m).
4.Placethethreadedhousingadapter(6)ontothe
motorplate(7)andsecurewithwashers(13)and
screws(11).Torqueto8–9ft-lbs(11–12N•m).
5.Aligntheadapternuttoengagethebuilt-inshaft
inthe55-gallondrum.
6.Slowlyscrewtheunitontothethreadsonthe
centerbung󰘰ttingofthe55-gallondrum.Secure
tightlysothemotordoesnotrotateinthebung.
Motor Motor
MotorReplacement Replacement ReplacementKit Kit Kit25C765 25C765 25C765
Motorreplacementkit25C765isadrop-in
replacementforrotaryvaneairmotorPN101140.
Onpage16—Parts,RefNo.1liststheitems
includedwiththekit.Usetheagitatormanualmotor
replacementprocedureorpartspagediagramto
installthenewmotor.
Grounding Grounding
Grounding
Theequipmentmustbegroundedtoreducethe
riskofstaticsparking.Staticsparkingcancause
fumestoigniteorexplode.Toreducetherisk
ofstaticsparking,themountingcoverandall
electricallyconductiveobjectsordevicesinthe
sprayareamustbeproperlygrounded.
Agroundwireandclamparenotincluded.Fora
groundwireandclamp,orderpartnumber237569.
Togroundtheagitator,dothefollowing:
•For For
Formodels models models25C528, 25C528, 25C528,25C533, 25C533, 25C533,and and and25M481: 25M481: 25M481:
Connectoneendofthegroundwire(GW)tothe
groundconnector(GC)ontherimofthedrum
cover.Connecttheotherendofthegroundwireto
atrueearthground.
Figure3GroundConnector-Models25C528,
25C533,and25M481
3A4792C9

Installation
•For For
Formodels models models25C529, 25C529, 25C529,25C530, 25C530, 25C530,25C534, 25C534, 25C534,25C535, 25C535, 25C535,
25N881, 25N881,
25N881,and and and25N882: 25N882: 25N882:Connectoneendofthe
groundwire(GW)totheagitatorgroundconnector
(GC).Connecttheotherendofthegroundwireto
atrueearthground.
Figure4GroundConnector-Model25C529
Figure5GroundConnector-Model25C530
Figure6GroundConnector-Models25C534,
25C535
Figure7GroundConnector-Models25N881,
25N882
103A4792C

Installation
Air Air
AirLine Line LineAccessories Accessories Accessories
Installthefollowingaccessoriesintheordershown
below,usingadaptersasnecessary.
Air Air
AirShut Shut Shut- - -off off offValve Valve Valve
Ableed-typemasterairshutoffvalve(A)formounting
location)isolatestheairlinecomponentsfor
servicing.Anairshutoffvalveshouldbeinstalledin
thesupplylineandusedtostopandstarttheagitator.
Ifthevalveisinstalled,youdonotneedtosetthe
agitatorspeedeachtimeitisused.
Orderbleed-typeairshutoffvalvesusingthepart
numberslistedbelow:
Table Table
Table2 2 2Bleed Bleed Bleed- - -Type Type TypeShutoff Shutoff ShutoffValves Valves Valves
MaxWPR
Part
No.
Inlet/
OutletnptpsibarMPaMate-
rial
110223 110223
1102231/4(fxf)25017.21.7Brass
110224 110224
1102243/8(fxf)25017.21.7Brass
110225 110225
1102251/2(fxf)25017.21.7Brass
110226 110226
1102263/4(fxf)25017.21.7Brass
113163 113163
1131631(fxf)25017.21.7Brass
107142 107142
1071421/2(mxf)25017.21.7Brass
107141 107141
1071413/4(mxf)25017.21.7Brass
Air Air
AirLine Line LineFilter Filter Filter
Airline󰘰ltersremoveharmfuldirt,moisture,andoil
fromthecompressedairsupply.Orderpart106148
for3/8nptor106149for1/2npt.
Installanairline󰘰lter(AF)toremovecontaminants
suchasdirt,moisture,andoilfromthecompressed
airsupply.Airline󰘰lters(AF)removeharmfuldirt
andmoisturefromthecompressedairsupply.Order
part106148for3/8nptor106149for1/2npt.See
Installation,page6.
Air Air
AirRequirements Requirements Requirements
Theairmotordoesnotrequirelubricatedair.See
AirConsumption,page25forrequirements.
Connectthesupplyairtotheinletsideoftheair
regulator.
Figure8SupplyAirHoseConnection
3A4792C11

Operation
Operation Operation
Operation
Personalinjury,suchassplashingintheeyes,
mayresultfrompressureinthetank.Alwaysfollow
thePressureReliefProcedure,page12before
openingthetankcoveror󰘰llport.
Personalinjuryorequipmentdamagemayresult
fromlifting/fallingheavyequipment.Toavoid
personalinjuryorequipmentdamage:
•Donotliftthedrumcoverandagitatorwithout
properassistance.
•Donotwalkorstandbeneatharaisedelevator.
Agitator Agitator
AgitatorOperation Operation Operation
1.Starttheagitatorbyopeningtheairshutoffvalve
(SV).Regulatethespeedwiththeairregulator
knob(R).
2.Operatetheagitatorcontinuouslywhensupplying
paintsorother󰘱uidstothesystem.
3.Stoptheagitatorbyclosingtheairshutoffvalve
orbyreducingpressurewiththeairregulator
knob.
Finding Finding
Findingthe the theProper Proper ProperAgitator Agitator AgitatorSpeed Speed Speed
NOTICE NOTICE
NOTICE
Toavoiddamagingtheequipment,donotoperate
theagitatoratahighspeedforalongperiodof
time.Excessiveagitatorspeedcancausefoaming
of󰘱uid(makingthe󰘱uidunusable),vibration,and
increasedwearonparts.Onlyagitatethe󰘱uid
enoughtomaintainevenmixing.
Agitatorsareusedtokeepsolidsinsuspension,
whichassistsinkeepingsolidsfromcloggingthe
siphontube.Ifsolidshavesettledinthecontainer,
useashakerorsomeotherdevicetothoroughly
agitatethe󰘱uidbeforeinstallingandoperatingthe
agitator.
Belowisageneralprocedureto󰘰ndthesuggested
agitatorspeed.Consultyourmaterialsupplier
forspeci󰘰crecommendationsonrecommended
agitationspeeds.
1.Besuregroundwireisattached.See
Grounding,page9.
2.Fillthe󰘱uidsupplycontainertoabout3or4
inches(75to100mm)abovetheagitatorblade.
3.Opentheairshutoffvalve(SV).
4.Starttheagitatorbygraduallyturningtheair
regulatorknob(R)toincreaseairpressureuntila
vortexbeginstoforminthepaint.
5.Reducethespeedslightly,then󰘰llthe󰘱uid
container.
Whenthecontainerisfullavortexshouldnotbe
seen.Materialshouldonlybemovingatafast
enoughspeedtoensureadequatemixing.
6.Operatetheagitatorcontinuouslywhilesupplying
paintsorother󰘱uidstothesystem.
Pressure Pressure
PressureRelief Relief ReliefProcedure Procedure Procedure
Thisequipmentstayspressurizeduntilpressure
ismanuallyrelieved.Tohelppreventserious
injuryfromsplashing󰘱uidandmovingparts,follow
thePressureReliefProcedurebeforecleaning,
checking,orservicingtheequipment.
1.Disconnecttheairline.
2.Closethebleed-typeairshutoffvalve(A)to
relievepressuretotheairregulator.
123A4792C

Maintenance
Maintenance Maintenance
Maintenance
Movingparts,suchasanimpellerblade,cancut
oramputate󰘰ngers.Toreducetheriskofserious
injury,alwaysshutofftheagitatoranddisconnect
theairlinebeforecheckingorrepairingtheagitator.
Beforeperforminganymaintenanceprocedure,
followthePressureReliefProcedure,page12.
Greasing Greasing
Greasingthe the theAir Air AirMotor Motor Motor
Afterapproximately20millionrevolutionsorevery
threetofourmonths(whichevercomes󰘰rst),grease
themotorneedlebearing.Recommendedgrease:
MOBILGREASEXHP222SPECIALorequivalent
withminimum󰘱ashpointtemperatureof399.2°F
(204°C).
1.FollowthePressureReliefProcedure,page12.
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
For For
Formodels models models25C528, 25C528, 25C528,25C533, 25C533, 25C533,25M481 25M481 25M481
Eachweek,cleananydried󰘱uidfromaroundthe
bearing(6)areaoftheshaft(7)andinspectthe
bearingforcrackingorexcessivewear.
For For
Formodel model model25C529 25C529 25C529
Eachweek,cleananydried󰘱uidfromaroundthe
bearing(18)andbracket(23)areaoftheshaft(21).
Lubricatewithseveraldropsoflightoil.
3A4792C13

Service
Service Service
Service
Movingparts,suchasanimpellerblade,cancut
oramputate󰘰ngers.Toreducetheriskofserious
injury,alwaysshutofftheagitatoranddisconnect
theairlinebeforecheckingorrepairingtheagitator.
Iftheairmotorrequiresmorethaninstallationofa
servicekit,itisusuallyquickestandeasiesttosend
ittoaGracodistributorforrepairorreplacement.A
motorrebuildkit(25M535)isavailable.Seemanual
3A5050formoreinformation.
Removing Removing
Removingthe the theAir Air AirMotor Motor Motor
Model Model
Model25C528, 25C528, 25C528,25C529, 25C529, 25C529,25C533, 25C533, 25C533,and and and
25M481 25M481
25M481
1.FollowthePressureReliefProcedure,page12.
2.Removetheairregulatorbyunscrewingthe
swivel󰘰tting(12).
a.SeeModel25C528,page16
b.SeeModel25C529,page19
c.SeeModel25C533,page17
d.SeeModel25M481,page18
3.Loosentheupperclamp(2)andraisethemotor
sotheuppertwosetscrews(3)areaccessible.
Usea1/8inchhextoremovethesetscrews
fromtheshaft.
4.Lifttheairmotorstraightupofftheshaft.
Model Model
Model25C534 25C534 25C534and and and25C535 25C535 25C535
1.FollowthePressureReliefProcedure,page12.
2.Removetheairregulatorby
unscrewingtheswivel󰘰tting(11).See
Models25C534and25C535,page20.
3.Removethescrews(14)holdingthemotor
mountingplate(13)totheoutlethousing(3).
4.Removethesocketheadscrews(2)holdingthe
motor(1)tothemountingplate.
5.Raisethemotorsothetwosetscrews(9)inthe
shaft(4)areaccessible.Usea1/8inchhexto
removethesetscrewsfromtheshaft.
6.Lifttheairmotorstraightupofftheshaft.
Model Model
Model25C530 25C530 25C530
1.FollowthePressureReliefProcedure,page12.
2.Removetheairregulatorbyunscrewingthe
swivel󰘰tting(9).SeeModel25C530,page21.
3.Usinga3/16inchhex,removethethreeset
screws(8)onthebungadapter(4).
4.Raisethemotorsothetoptwosetscrews(7)in
thecoupler(3)areaccessible.Usea1/8inch
hextoremovethetoptwosetscrews.
5.Lifttheairmotor(1)straightupoffthecoupler.
Model Model
Model25N881 25N881 25N881and and and25N882 25N882 25N882
1.FollowthePressureReliefProcedure,page12.
2.Removetheairregulatorby
unscrewingtheswivel󰘰tting(5).See
Models25N881and25N882,page22.
3.Removethescrews(11)holdingthebung
adapter(6)tothemotorplate(7).
4.Liftthemotoroffthebungadapter(6)and
removethescrews(8)thatattachthemotorplate
(7)tothemotor(1).
143A4792C

Service
Aligning Aligning
Aligningthe the theOutlet Outlet OutletHousing Housing Housing— — —
25C534, 25C534,
25C534,25C535 25C535 25C535Only Only Only
NOTICE NOTICE
NOTICE
Improperinstallationoftheoutlethousingcould
causetheagitatorshafttobindagainsttheoutlet
housingbearinganddamageit.
Afterrepairingorreplacingtheoutlethousingorair
motor,performthefollowingsteps:
1.FollowthePressureReliefProcedure,page12.
2.Placetheagitatorinaverticalpositionand
loosenthethreeoutlethousingscrews(14).See
Models25C534and25C535,page20.
3.Apply25psi(1.7bar)minimumairpressureto
theairregulator(12).Adjusttheairregulatorso
theagitatorshaftisbarelyturning.
4.Whiletheagitatorshaftisturning,torquethe
threeoutlethousingscrewsto80to100in-lbs(9
to11.3N•m).
5.Iftheagitatorshaftbinds,repeatsteps1to3
above.
Inspecting Inspecting
Inspectingthe the theShaft Shaft Shaftand and andAgitator Agitator Agitator
Blades Blades
Blades— — —Model Model Model25C530 25C530 25C530Only Only Only
1.FollowthePressureReliefProcedure,page12.
2.Turnoff/disconnectpowertotheagitator.
3.Removetheagitator.
4.Cleanwithacompatiblesolventandinspectthe
shaft(2)andblades(5,6)forwearordamage.
SeeModel25C530,page21.
5.Ifnowearordamageisdetected,reinstallthe
agitatorintodrum.
6.Iftheshaftneedsreplacing:
a.Removetheairmotorfollowingthestepsin
RemovingtheAirMotor,page14.
b.Raisethebungadapter(4)toexposethe
bottomtwosetscrews(7)inthecoupler(3).
Usethe1/8inchhextoremovethem.
c.Slidetheshaft(2)outofthecoupler.
d.Slidethenewshaftintothecoupler.Use
a1/8inchhextotightenthetwolower
setscrewsinthecoupler.Torqueto65in-lb
(7.3N•m).
e.Lowerthebungadapterontheshaftorraise
theshaftthroughthebungadapterandinsert
theairmotorintothecoupler.Usethe1/8
inchhextotightenthetwouppersetscrews
(SS)inthecoupler.Torqueto65in-lb(7.3
N•m).SeeModel25C530,page21.
f.Raisethebungadapterandusea3/16inch
hextotightenthethreesetscrews(8)intothe
bungadapter.Torqueto80in-lb(9N•m).
g.Reinstallagitatorintothedrum.
7.Ifthebladeneedsreplacing:
a.Usea3mm(1/8inch)hextoremovethe
setscrewinthelong(6)orshort(5)blade
hubandslidethehub/bladeassemblyoffthe
shaft.
b.Toinstallanewhub/bladeassembly,slideit
ontotheshaftandtightenthesetscrew.The
setscrewmustalwaysremainonthetop,
withthebladeshangingdown,sotheblades
passintoandoutofthebunghole.
c.Reinstalltheagitatorintothedrum.
3A4792C15

Parts
Parts Parts
Parts
Model Model
Model25C528 25C528 25C528
Ref Ref
Ref
No. No.
No.Part Part
PartNo. No. No.Description Description DescriptionQty Qty
Qty
125C765
MOTOR,Air,Rotary
Piston;includes12,13,
14,and30.
1
2101368CLAMP,Hose2
3100053
SCREW,Set,Socket
Head;5/16-18x0.25”;
torqueto96–132in-lb
(11–15N•m)
4
4158865COUPLING,Motor1
5222696GUIDE,Agitator1
6115166BEARING,Agitator,
PressFit1
7185389SHAFT,Agitator1
8185401PIN,Shear1
9185398PROPELLER,Agitator1
10110248
SCREW,Set,Socket
Head;#10–24x0.25”;
torqueto15–20in-lb
(1.7–2.3N•m)
1
11100579PIN,Cotter1
12156823FITTING,Union,Swivel1
13156971FITTING,Nipple,Short1
14116513REGULATOR,Air1
15159858COUPLING1
19100633TOOL,Wrench,Allen
(notshown)1
20101369TOOL,Wrench,Allen
(notshown)1
27065251CABLE,Copper,Flat
Braid,0.33ft1
29190192GASKET,Guide,Agitator1
30104655GAUGE,Pressure,Air1
32▲17P806SafetyTag(notshown)1
▲Replacementsafetylabels,signs,tags,and
cardsareavailableatnocost.
163A4792C

Parts
Model Model
Model25C533 25C533 25C533
Ref Ref
Ref
No. No.
No.Part Part
PartNo. No. No.Description Description DescriptionQty Qty
Qty
125C765
MOTOR,Air,Rotary
Piston;includes12,13,
14,and30.
1
2101368CLAMP,Hose2
3100053
SCREW,Set,Socket
Head;5/16-18x0.25”;
torqueto96–132in-lb
(11–15N•m)
4
4100579PIN,Cotter2
5207622GUIDE,Agitator1
6166565BEARING,Agitator,
PressFit1
7172313SHAFT,Agitator1
8100633TOOL,Wrench,Allen
(notshown)1
9101369TOOL,Wrench,Allen
(notshown)1
11158865COUPLING,Motor1
12156823FITTING,Union,Swivel1
13159858COUPLING1
14156971FITTING,Nipple,Short1
15160077PIN,Shear2
16159854PROPELLER,Agitator2
17101118
SCREW,Set,Socket
Head;#10–24x0.25”;
torqueto15–20in-lb
(1.7–2.3N•m)
2
22116513REGULATOR,Air1
23104655GAUGE,Pressure,Air1
27065251CABLE,Copper,Flat
Braid,0.33ft1
29190192GASKET,Guide,
Agitator1
35▲17P806SafetyTag(notshown)1
▲Replacementsafetylabels,signs,tags,and
cardsareavailableatnocost.
3A4792C17

Parts
Model Model
Model25M481 25M481 25M481
Ref Ref
Ref
No. No.
No.Part Part
PartNo. No. No.Description Description DescriptionQty Qty
Qty
125C765
MOTOR,Air,Rotary
Piston;includes12,13,
14,and30.
1
2101368CLAMP,Hose2
3100053
SCREW,Set,Socket
Head;5/16-18x0.25”;
torqueto96–132in-lb
(11–15N•m)
4
4158865COUPLING,Motor1
5222696GUIDE,Agitator1
6115166BEARING,Agitator,
PressFit1
7185389SHAFT,Agitator1
917N708
IMPELLER,Hydrafoil;8”
StainlessSteel;includes
item10
1
10———
SCREW,Set,Socket
Head;3/8–16x0.5”;
torqueto180–200in-lb
(20–23N•m)
2
1117R167SPACER,Shaft1
12156823FITTING,Union,Swivel1
13156971FITTING,Nipple,Short1
14116513REGULATOR,Air1
15159858COUPLING1
19100633TOOL,Wrench,Allen(not
shown)1
20101369TOOL,Wrench,Allen(not
shown)1
27065251CABLE,Copper,Flat
Braid,0.33ft1
29190192GASKET,Guide,Agitator1
30104655GAUGE,Pressure,Air1
32
▲
17P806SafetyTag(notshown)1
▲Replacementsafetylabels,signs,tags,and
cardsareavailableatnocost.
183A4792C

Parts
Model Model
Model25C529 25C529 25C529
Ref Ref
Ref
No. No.
No.
Part Part
Part
No. No.
No.Description Description
DescriptionQty Qty
Qty
125C765
MOTOR,Air,Rotary
Piston;includes12,13,
14,and30.
1
2101368CLAMP,Hose2
3100053
SCREW,Set,Socket
Head;5/16-18x0.25”;
torqueto96–132in-lb
(11–15N•m)
4
4100017
SCREW,Cap,Hex
Head;1/2–13x1.5”;
tightensecurely;donot
over-tighten
1
5100018WASHER,Lock,Spring1
Ref Ref
Ref
No. No.
No.
Part Part
Part
No. No.
No.Description Description
DescriptionQty Qty
Qty
6203399CLAMP,Screw1
7100633TOOL,Wrench,Allen(not
shown)1
8101118
SCREW,Set,Socket
Head;#10–24x0.25”;
torqueto15–20in-lb
(1.7–2.3N•m)
3
9160077PIN,Shear2
10156971FITTING,Nipple,Short1
11101369TOOL,Wrench,Allen(not
shown)1
12156823FITTING,Union,Swivel1
13116513REGULATOR,Air1
14104655GAUGE,Pressure,Air1
15158865COUPLING,Motor1
16159056PAD,Mounting,Screw1
17159057RETAINER1
18104391BEARING,Agitator,Press
Fit1
19159704CUP,Protector,Bearing1
20159854PROPELLER,Agitator2
21172311SHAFT,Agitator1
22159858COUPLING1
23159863BRACKET,Mounting1
24159864CLAMP,Agitator1
25100579PIN,Cotter2
31104029CLAMP,Ground,Electric1
32104582WASHER,Tab1
33100718WASHER,Lock1
34110911NUT,Hex;M5x81
37186620LABEL,Symbol,Ground
(notshown)1
39065251CABLE,Copper,Flat
Braid,0.33ft1
43▲17P806SafetyTag(notshown)1
▲Replacementsafetylabels,signs,tags,and
cardsareavailableatnocost.
3A4792C19

Parts
Models Models
Models25C534 25C534 25C534and and and25C535 25C535 25C535
Ref Ref
Ref
No. No.
No.Part Part
PartNo. No. No.Description Description DescriptionQty Qty
Qty
125C765
MOTOR,Air,Rotary
Piston;includes12,13,
14,and30.
1
2124313
SCREW,SocketHead;
M6–1x16mm,Stainless
Steel;torqueto80–100
in-lb(9–11N•m)
3
235535
HOUSING,Agitator
Outlet,StainlessSteel
(model25C534)
1
3
224876
HOUSING,Agitator
Outlet,CarbonSteel
(model25C535)
1
235530SHAFT,Agitator(model
25C534)1
4
224852SHAFT,Agitator(model
25C535)1
5224393HELIX,Agitator1
6187054PLUG,Tube,Fluid1
7101946PIN,Cotter;Stainless
Steel1
8111312PACKING,O-ring1
9112364
SCREW,Set,Socket
Head;1/4–20x0.38”;
torqueto35–40in-lb(4–5
N•m)
2
10156823FITTING,Nipple,Short1
11156971FITTING,Union,Swivel1
12116513REGULATOR,Air1
13187577PLATE,Mounting,Motor1
14102023
SCREW,Cap,HexHead;
1/4–20x0.75”;torqueto
80–100in-lb(9–11N•m)
3
16104655GAUGE,Pressure,Air1
17111593
SCREW,Grounding,
SlottedHexWasher
Head;#8–32x0.375”
1
18157021WASHER,Lock,Internal1
19186620LABEL,Symbol,Ground
(notshown)1
27403123CAP,Plug(notshown)1
30▲17P806SafetyTag(notshown)1
▲Replacementsafetylabels,signs,tags,and
cardsareavailableatnocost.
203A4792C