Comco AccuFlo AF10-E Technical Document

ComcoInc.2151N.LincolnSt.Burbank,CA91504USA
[e-mail]1‐818‐841‐5500

TableofContents
Simoom®Technology…………………………………………… 3
Set‐UpProcedures……………………………………………… 4‐5
TankOrifice&BypassTube……………………………………6
PowderGate®Valve……………………………………………… 7
Tune‐upKits…………………………………………………………… 7
AF10‐EComponents……………………………………………… 8
MaintenanceCounters..………………………………………… 9
Modulator……………………………………………………… 9
Troubleshooting……………………………………………… 10
ElectricalSchematic………………………………………… 11
PneumaticSchematic……………………………………… 12
WarrantyInformation………………………………………13
AccuFlo® Nozzles…………………………………………… 14
FixturingGuide………………………………………………..14
AccuFlo®AF10‐ESpecifications
Model AccuFlo® AF10‐EStandardTank AccuFlo®AF10‐ETTallTank
ShippingWeight 30lb.(13.6kg) 30lb.(13.6kg)
Height 10.5in.(26.7cm) 15.0in.(38.1cm)
Width 17.5in(44.5cm) 17.5in.(44.5cm)
Depth 10.0in.(25.4cm) 10.0in.(25.4cm)
AirPressure 10– 125psi(0.7– 8.6bar) 10– 125psi(0.7– 8.6bar)
Powder Capacity 1liter 2liters
NozzleSizes Round.015‐.060in.Ø(.38mm– 1.5mm)Othershapes&sizesavailable.
FacilityRequirements
InletAirPressure 70– 145psi(4.8– 10bar)
Air Volume Dependingonnozzlesizeandairpressure,consumption istypically
0.2– 4.6SCFM(94– 2170cm3/sec)
AirSupplyQuality Driedto‐25° Fdewpoint(200 ppmofmoisture)andoilcontentfilteredto
<10ppm
Power Requirements 115V60Hz,40W
230V 50Hz,40W
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Congratulations,theComcoAccuFlo®modelAF10‐Eyouhavepurchasedincorporatesthelatest
developmentinmicro‐abrasiveblasting– Simoom®technology.
Thispatentedmethodofmixingairandabrasivesdeliversasteadier,moreconsistentstreamofabrasive
allowingyoutoprocesspartsefficientlyandwithuniformresults.Here’swhyitworkssomuchbetterthan
othermicro‐abrasiveblasters.
HowdoesSimoom®technologywork?
Activatedtheblastandthemodulatoropensandcloses50or60timespersecond(dependingonlocal
powersuppliedat50Hzor60Hz),producingpulsesintheairstream.Therapidchangeinairpressure
fluidizestheabrasiveabovetheorifice.Thepowderisthendrawnthroughtheorificeintothemixing
chamberwhereitenterstheairstreamandexitstheAccuFlo®throughthePowderGate®valvetravelingout
tothenozzle.
Thestrengthofthesemodulatedpulseandthediameteroftheorificedeterminestheamountofabrasive
thatdropsintothemixingchamber.Threemechanismsenableyoutochangetheamountofabrasiveinthe
airstream:thetankorifice,abrasiveblendandbypasstube.
TankOrifice: Alargerorificeincreasesabrasiveflow.Inmostcasestheorificeshouldbeatleast5timesthe
sizeoftheaverageparticlesize,butnotlargerthanthenozzle.
BypassTube:Thebypasstubecreatesanalternatepathforthemodulatorpulses,bypassingtheorifice.A
largerbypasstubedampenstheimpactofeachpulse,reducingmediaflow.
AbrasiveBlend:Theabrasiveblendchangesthestrengthofthepulsebyallowingsomeairtobypassthe
modulator.Withlessairpassingthroughthemodulator,thepulseweakensandlessabrasiveisfedintothe
airstream.Theabrasiveblendvalveallowsyoutofinetunetheabrasiveflow.
FormoretechnicaldetailsonSimoomtechnology,seeUSpatent#7,297,048.

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MakeConnections
1. PlacetheComfortGrip®handpiece insidetheworkchamber.
2. Placetheopenendoftheventhoseintothebackoftheworkstationorintothedustcollectorhose.
3. Connectthepowercordandtheblastcontrolcable.
4. Connecttheairsupplytothe“AirIn”fitting(using¼"tubingprovidedintheaccessorykit).
INLETAIRFITTING
THEABRASIVEHOSEFROMTHE
POWDERGATEVALVERUNS
DIRECTLYTOTHENOZZLE.
DONOTROUTETHISHOSE
THROUGHTHEVENTPINCH!
AddAbrasive
1. Removethetankcover.
2. Fillthetankwithpowder.Donotfillabovethe
topofbypasstube.
3. Replacethetankcoverandsecure(only¾turn
required).
VENTHOSE
ISROUTED
THROUGH
THEVENT
PINCH
TONOZZLE(S)
Alwaysmaintaina10psibufferbetweentheAccuFlo
pressuresettingandyourcompressor.Thisprotects
againstabrasiveflowingbackwardsthroughthe
machine.

AF10‐EControlConnector
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BlastControl:Pin1provides115VACpowerfromtheAccuFlo.Thehostmustprovideaswitchtoputthis
voltagebackintoPin2,whichwillcausetheblastertoblast.WhenPin2isleftfloating,theblasterwillnot
blast.200mAofcurrentistypical.
PE: Pin4providesanoptionalbondingpathtoPrimaryEarththroughtheAccuFlo.Ifthehostisotherwise
bondedtoPE,donotusethispin.
RegulatorControl:Theregulatormustbepoweredby24vdcthroughPin7andgroundthroughPin6.The
regulatorrequires60mAofcurrent.Theblastpressureissetbyprovidinga0‐10vdcsignalatPin8,which
correspondstoapressureof0‐148psi.Theinternalresistanceoftheregulator’sinputis100ohmsminimum.
AF10‐ECablesandControllers
CablingandcontroldependsonhowtheuserdesirestocontroltheAF10‐E.Usetheabovetableto
determinewhichcabletouse.IftheAF10‐EispairedwithanAutoFillunit,refertotheAutoFillmanualfor
additionalwiringinformation.

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TankOrifice&BypassTube
WehaveconfiguredtheAccuFlo®foryour
particularapplication.
Startwiththesesettings.
Youhavetheoptiontoadjustsettings.Minor
changesinpowderconcentrationshouldbemade
withtheAbrasiveBlendControlonthefrontpanel.
Formoresignificantchanges,theabrasive
concentrationintheairstreamcanbemade
leaner(lessabrasive)or richer(moreabrasive)by
changingthetankorificeandbypasstube.Contact
aComcoTechSupportSpecialistforinformationon
additionaloptions.
•Changethetankorificeusinga¼"nutdriver.
•Unscrewthebypasstubeandliftitoutofthe
sleeve.Usingthechartbelow,selectthetube
youdesireandinsertitinthesleeve.
Fingertightenonlydonotforce.
BypassTubeChart
TANKORIFICE
MB1409‐
BYPASSTUBE
MB2265‐
StandardTank‐1C‐1B‐1A
TallTank‐2C‐2B‐2A
‐18
‐25
‐30
1=LeanMixture(lessabrasive)
5=RichMixture(moreabrasive)
TANKORIFICE
MB1409‐x
BYPASSTUBE
MB2265‐x
TANKASSEMBLY
MB2200‐10(Standard)
MB2200‐20(Tall)

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PowderGate®Valve
ThePowderGate®NoseandOutputFittingshouldbereplacedafter250,000cycles.Theyarebothincluded
intheTune‐UpKit.
•UnscrewtheOutputFittingwitha¾"wrench.
•Withpliers,gentlypullthewornNosefromshaft.
•PressonnewNose.
•InstallthenewOutputFitting.
•ConnectthetubingwiththeblueQuicknut.
Tune‐UpKits
ABRASIVEHOSE
MB1233
POWDERGATEOUTPUTFITTING
MB2560‐x
POWDERGATENOSE
MB1653 TUNE‐UPKITMB2247‐x
MB2247‐2
1/4"output fitting
MB2247‐3
3/8"output fitting
PowderGate
OutputFitting MB2560‐3 MB2560‐4
PowderGate
Nose MB1653
O‐ring ST5650‐242
Inadditiontothetune‐upkit,wealsorecommendthatyoukeepaback‐upsupplyofnozzlesandorificesto
fityourapplication.

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AF10‐EComponents

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MaintenanceCounters
AccuFlo®Modulator
Foreasiermaintenancetherearetwocounterson
thefrontpanel.
TheCYCcountsthenumberofblastcyclesonthe
AccuFlo (eachtimethePowderGate®valveopens.)
Abrasivetypeandblastpressurewillimpact
maintenancefrequency,buttypicalconfigurations
willlastmorethan250,000cyclesbeforeneeding
maintenance.
TheHRS counterrecordsthenumberofblasthours
(i.e.actualtimethemodulatorhasoperated.)
Yourmaintenancerequirementsmayvarywithyour
application.
Themodulatorshouldbereplacedafter5000hours
ofoperation.
ToreplacetheAccuFlo®AF10‐Emodulator:
•Disconnect3coloredtubesfromthemodulator
andtheelectricalplugfromfrontpanel.
•Removethetwoscrewsholdingthemodulator
tothebracketusingaPhillipsscrewdriver.
•Installthenewmodulatorinreverseorder,
makingsurethetwogrommetsremaininthe
bracket.
MODULATOR
MB2250‐1(115V)
MB2250‐2(230V)

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Troubleshooting
Iftheunitdoesnotpressurizewhenyouturniton:
•Istherepowertotheunit?Doesthelightonthepowerswitchilluminate?
Ifnot,checkthepowercordconnectionsatthebackoftheunitandatthepowersource.Checkthefuse.
•Istheairlineconnected?Aretheupstreamvalvesopen?
Checktheinletairsupply.
•Doyouhearairescapingfromtheunitwhenitisturnedon?
Checkthattheinletair,venthose,andabrasivehoseexitingthePowderGate®valveareconnectedproperly.
Seetheset‐upguideonpages4and5.Makesurethetankcoverissecurelyfastened.
Ifyouaregettingairthroughthenozzle,butnoabrasive;orifthecuttingactiondecreases:
•Isthepowdertankempty?Refill.
•Istheabrasiveinthetankdampandstickingtothewalls?
Replacewithfreshpowder.Checkthatyourairdryerisworkingproperly.
•Isthetankorificeplugged?
Emptypowder,removeorifice,andinspect.Checktoseeifyoursupplierofabrasivepowderisprovidinghigh
qualitymaterial.FordetailsseetheSupportsectiononourwebsite.
•Isthemodulatorfunctioningproperly?
Youshouldhearabuzzingsoundwhentheblastisactivated.Ifnot,themodulatormayneedtobereplaced.
ForfurtherdetailscontactTechnicalSupport.
Ifnothinghappenswhentheblastisactivated:
•Isthenozzleplugged?Removeandinspect.
•IsthePowderGate®valvefailingtoopen?ContactTechnicalSupport.
IfyoususpectthePowderGate®valveisnotclosingcompletely:
WhenthePowderGate®valvecloses,placeafingerovertheendofthenozzlefor3seconds.Whenyouremove
yourfinger– isthereasmallpuffofair?Ifso,therearetwopossibilities:
•ThePowderGate®noseiswornandcanbereplacedasdescribedabove.
•Theabrasivemixturemaybetoorich.ReduceAbrasiveBlendadjustmentonfrontpanel,orchecktheBypass
TubeChartforaleanermixturetohandleyournozzlesize.
PreventMoistureandOilContamination
Contaminationoftheabrasivepowderfrommoistureand/oroilisoneofthemostcommonproblems
associatedwithmicro‐abrasiveblasting.Moisturewillcausethepowderto“clumpup,”preventingitfrom
flowingfreelyfromthetank.
Moisturewillcausethepowderto"clumpup"preventingitfromflowingfreelyfromthetank.
Oilintheairsupplywillnotonlyaffectabrasiveflow,itcanalsocausemajorcomponentfailureswithinyour
blaster,resultingincostlyrepairs.
Toavoidmoistureandoilcontamination,runyourairsupplythroughapositiveairdryerequippedwithan
appropriateoilfilter.