Baelz Automatic BA 373-E45 - Principle of Operation; Manual Adjustment

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Motorized Linear Actuator baelz 373-E45
4.3 Principle of operation
Motorizedlinearactuatorstooperatecontrolvalvesforowregulationapplicationsincontrol
andprocesstechnology.Theself-lockingthreadedspindle/spindlenutisdrivenbyanelectric
motorviaagearbox.Thisconvertstherotarymovementintoalinearmovement.Load-
dependentlimitswitchesdictatetheendpositions
4.3.1 Manual adjustment
Manualadjustmentmayonlybecarriedoutwhenthemotorisnotinmotion.Forthe
adjustment,unscrewthecapnutfromthetopofthecover,removethehandcrankfromthe
bracketonthebottomoftheactuatorhousingandinsertitintothetubeinthetopofthecover.
Turnthecrankhandleusinggentlepressure.