Kitz B Series - Note for Users System Design

DocumentNo.:KE-4025-06                                           1/50
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1NoteforUsersSystemDesign
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 Holdingvalveposition
KITZpneumaticactuatorsdonotassurenon-leakage.Theactuatordoesnotkeep
thevalveinthepredeterminedopenpositionforalongtimewithoutcontinuousair
supply.Whenconnectingtheactuatortotheairtank,itmaybecomeimpossibleto
holdthevalveopeningpositionduetoleakagefromtheactuator.Pleaseperiodically
performaninspectiontodetectleakagefromthesealwasher,retightenthevalve
andcheckthepressuredropintheairtankwhenaactuatorisconnectedtotheair
tank.Ifyou needtokeep thevalveinthe predeterminedposition foralongtime,
pleasecontactKITZ.
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 Residualpressureinthecylinderofthespringreturntypeactuator
Outputtorqueofthespringreturntypeactuatorindicatesthevaluewithoutinternal
airresidueremainsinsidethecylinders.Pleasedesignthecircuitsystemtobeable
toexhausttheinternalpressurefromthecylinderduringthespringreturnaction.If
internalpressureremainsinthecylinder,theoutputtorquewillbedroppedandthe
valvemaynotbeclosed.
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 The actuator may move to the opening direction if pressure is applied to the
both sides of the cylinder port of the double action type actuator. If manual
operationis needed, thecircuit system shall be designedtoequalize thecylinder
internalpressureandtheatmosphericpressure.
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 DONOTpressurizethebreathingportofthespringreturntypeactuator.
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 Preventdust,rainwater orwaste fromenteringintotheactuator throughthe
breathingport.
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