
Installation
Motor, Motor,
Motor,Bearing Bearing
BearingHousing, Housing,
Housing,and and
andImpeller Impeller
Impeller
Installation Installation
Installation
Allelectricalwiringmustbedonebyaqualied
electricianandcomplywithalllocalcodesand
regulations.Onlytrainedandqualiedpersonnel
whohavereadandwhounderstandtheinformation
inthismanualshouldinstallthisequipment.
Alwaysmaintainaminimumof1in.(25.4mm)
clearancebetweenrotatingagitatorpartsand
containertopreventsparksfromcontact.
Personalinjuryorequipmentdamagemayresult
fromlifting/fallingheavyequipment.Toavoid
personalinjuryorequipmentdamage:
•Donotliftthedrumcoverandagitatorwithout
properassistance
•Donotwalkorstandbeneatharaisedelevator.
Forbestresults,donotremoveanyprotective
wrappingsfromanyoftheagitatorpartsuntiljust
priortoassemblyandinstallation.Storeallparts
indoors,incleandryair.
Figure2showstheholesforinstallingagitatoranges
(partnumbers25C454and25C453)tothemounting
surface.Holesrequiredinthemountingsurfaceare:
Shaft Shaft
Shafthole: hole:
hole:1"-2"(2.54cm-5.08cm)
Mounting Mounting
Mountingthe the
theange ange
ange(3 (3
(3methods): methods):
methods):
•(3)holestomounttoGracodrumlidsthathave
mountingsurfaceforback-gearagitatorhousings.
•(4)holesfor3"150#ANSIangepattern(6"
diameterboltcircle).Thispatternisfornew
installations.
•(4)holesformountingtoanexistingGracoLSA
suppliedagitatormountingpattern(6.25"diameter
boltcircle).
Figure2AgitatorMountingHoleDimensions
Motorandbearinghousingweighapproximately50
lbs(22.6kg).Verifythatadequatepersonnelare
availableorasecureliftingdeviceisavailableforuse
inpositioningandinstalling.
NOTE:Eyebolts(26)areshippedloosetobe
attachedforliftingtheagitator.Seeattachment
location(Parts,page13).
1.Installbearinghousing/angeassemblyperthe
following:
a.Forangemount:See
Models25C454and25C463,page13for
partsidentication.Placegasket(20)and
bearinghousing/angeassembly(A)ontank
cover.Installatwashers,mountingbolts,
andnuts(notprovided).Tightensecurely.
b.Forquick-clampangemount:See
Models25C453,25C575,25C464,25C576,
page15forpartsidentication.Place
bearinghousing/angeassembly(A)on
topofquick-clampgasket(notprovided)
andexistingquick-clampangeontank.
Attachwithclamp(notprovided)andtighten
securely.
c.Forpressuretank:SeeModels25C462,
25C470,25C471,25C465,25C472,25C473,
page17forpartsidentication.Placegasket
(21)andbearinghousing/angeassembly
(A)onpressuretankcover.Installand
securewithlockwasher(32)andnut(22).
Tightensecurelytopreventassemblyfrom
rotating.
2.Installtheretainingring(6)inthemachinedslot
intheagitatorshaft(24).
3.Slideshaftthroughthebearinghousing/ange
assemblyfromthetopsideofthebearinghousing
untiltheretainingringrestsontheupperbearing.
4.Slidetheimpeller(23)(seeFigure3)ontothe
shaft(24)sothebladeispushingmaterialdown
withthebladeturningclockwisewhenviewed
fromabove.Shaftcanbemovedupanddownin
thebearinghousingtoinstalltheimpeller.
5.Positiontheimpelleralongtheshaftasrequired:
Thedistancefromthetankbottomtothelowest
impellerblade(BB)shouldbe1/2to1–1/2times
theimpellerbladediameter(bladediameteris
determinedbymeasuringthedistancefromthe
tipoftheimpellertotheshaftcenter(AA)and
multiplyingbytwo).
Figure3ImpellerInstallation
6.Securetheimpellerbytighteningthesetscrews
(23a).SeeParts,page13.
7.Placecoupling(7)ontoagitatorshaftabovethe
retainingringandtightensetscrew(7a)securely.
8.Placespiderdiskcoupling(8)ontop.
3A4553F7