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1、®InstallationandOperationNon-SpringReturnGeneralInformationTableofContentsPagePreliminarystepsGeneralMounting1.BelimoactuatorswithNEMA1orNEMA2ratingsshould❑Standard............................................244bemountedindoorsinadry,relativelycleanenvironment❑ReversibleClamp...............
2、...............245freefromcorrosivefumes.Iftheactuatorismountedout-❑Linear..................................................246doors,aprotectiveenclosuremustbeusedtoshieldthe❑Rotary................................................247actuator.❑RetrofitBrackets................................2
3、482.Fornewconstructionwork,orderdamperswithextendedshafts.InstructtheinstallingcontractortoallowspaceforOperationmountingtheBelimoactuatorontheshaft.❑Electrical..............................................249❑Mechanical..........................................250Forreplacementofexistingge
4、artrainactuators,therearetwooptions:WiringA.Fromaperformancestandpoint,itisbesttomountthe❑General..............................................251actuatordirectlyontothedampershaft.❑Accessories........................................252B.Ifthedampershaftisnotaccessible,mountthenon-springret
5、urnactuatorwithaZG-NMAorZG-GMAStartupandCheckout..................................255crankarmkit,andamountingbracket(ZG-100,ZG-101,ZG-103,ZG-104)DeterminingTorqueLoadingandActuatorSizingDampertorqueloadings,usedinselectingthecorrectsizeactua-tor,shouldbeprovidedbythedampermanufacturer.Ifthi
6、sTorqueLoadinginformationisnotavailable,thefollowinggeneralselectionguidelinescanbeused.140ChartDamperTypeTorqueLoading120Opposedblade,withoutedgeseals,3in-lb/sq.ft.100fornon-tightclose-offapplicationsParallelblade,withoutedgeseals,4in-lb/sq.ft.80fornon-tightclose-offapplications60Opposedbl
7、ade,withedgeseals,5in-lb/sq.ft.fortightclose-offapplications40Parallelblade,withedgeseals,7in-lb/sq.ft.20fortightclose-offapplicationsDamperArea(sq.ft.)0Theabovetorqueloadingswillworkformostapplicationsunder2in.w.g.staticpressureor1000FPMfacevelocity.For
