Kitz F Series - Page 56

Document No.：KE-4010-11                                            Page: 53/58
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8.2FSWmanualoperatorunitscanbemountedonTypeFASspringreturnactuatorsforAIR-FAIL-CLOSE
modeasfollows.
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(1)RotatethehandwheelofaFSWmanualoperatorunitclockwisetillitcompletelystops(Fig.13).
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Fig.13
Fig.14 
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(2)MountanO-ringonthebottomoftheFSWunit(Fig.14).
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(3)Equalizethehousingpressurewiththeatmosphericlevel,andremoveanendcoverfromTypeFASspring
returnactuator(Fig.15).
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Fig.15
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(4)MounttheFSWunitontheendcoveropeningofthehousing,ensuringthattheO-ringdoesnotswellout
throughthecontactoftheunitwiththehousing(Fig.16).
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 Fig.16
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(5)PressurizetheactuatorwiththeactualoperationpressurethroughPort[O］and［S］andcheckexternalair
leakagewithsoapsolution.  Wipeoffthesoapsolutionafterwards.
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(6)Energizetheactuatorfortrialoperationtoensuretrouble-freefunction.  Werecommendtocarefullyread
Section8.4oftheoperationmanualbeforemanuallyoperatingspringreturnactuators.
O-ring<45F>
FSWmanualoperatorunit