Snap-On EEWB330A - Weight Minimization Execution; Interpreting Minimization Readings

Snap‐onEEWB330AHandspinWheelBalancer
Clampthewheelonthebalancerandreadjustitsothat
thevalveisexactlyperpendiculartoandabovethemain
shaft.PresstheENTERkey(1)toacquirethevalveposition.
ReadingUn.6appears(Fig.5‐34).Spinthewheel
(START).Themachineperformsthesecondmeasuringrun
withthetire.Aftertheme asuringrunthreereadingsare
possible:II‐Un.7ProceedwiththeUNprogram.Itis
recommendedthatthetirebeturnedoveronthe
rim.Un.7‐IIProceedwiththeUNprogram.Itis
recommendedthatthetirebereadjustedontherim.H0
Theoptimumminimizationconditionhasbeenachieved
andcannotbeimproved.Dependingonthereadings,there
areseveralpossibilitiesforproceedingwiththeprogram.
Thesepossibilitiesaredescribedbelow.ReadingII‐Un.7
Turnthetireoverontherim(theleftdisplay barsare
rotating).Option1:Turnthetireoverontherim(normal
program.Readjustthewheelaccordingtotheleftdirection
indicatorandmakeadoublemarkontheleftsideofthe
tireexactlyperpendiculartoandabovethemainshaft
(Fig.5‐36).Removethewheelfromthemachine.Turnthe
tireoverontherimandreadjustuntilthedoublemark
coincideswiththevalve(Fig.5‐37).Clampthewheelonthe
balancerandreadjustitsothatthevalveisexactly
perpendiculartoandabovethemainshaft.Pressthe
ENTERkey(1)toacquirethevalveposition.ReadingUn.8
appears(Fig.5‐34).Spinthewheel(START)(checkrun).If
weightminimizationwascarriedoutcorrectly(accordingto
theprogramcycle),afterthecheckrunthemachine
automaticallyreturnstothetypeofweightpositioning
previouslyselectedandindicatestheresidualdynamic
imbalanceonthewheel.Balancethewheelaccordingto
thereadings.Bothweightminimizationandbalancingare 
accomplished.MessageE9meansthatatleastoneerror
occurredduringtheminimizationcycle.PresstheSTOP
key(5)toexittheminimizationprogramandrepe
minimizationifnecessary.
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