Kitz F Series - Page 53

Document No.：KE-4010-11                                            Page: 50/58
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7.2Forconversionofthespringreturnmodetothedoubleactionmode,removethespringcartridgefromthe
housingandmounttheendcoverinstead.  Afteradjustmentofthevalveopeningrange,followingSection14
oftheoperationmanual,detectexternalairleakagewithsoapsolution,throughthecontactoftheendcover
andthestopperboltwiththehousing.
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 BeforedisassemblyofspringcartridgesfromTypeFASactuator,evenlyloosenallof4
springcoverbolts(butdon’tcompletelyremovethemfromthecover)andcheckifthe
springhasbeenreleasedfromthecompressionforceandboltscanberotatedbyhand.
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 Ifthespringcoverboltsarefoundtootighttoberotatedbyhand,thespringstillremains
energized, possibly due to damage of the spring cartridge or the housing pressure
remaininghigherthantheatmosphericlevel.  Insuchacase,disassemblyworkmustbe
immediatelydiscontinuedtopreventthespringcartridgefromjumpingout.
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 Ifyouhaveaconcernofdamageofaspringcartridge,securelyretightenspringcover
bolts,andreplacetheactuatoritselfwithoutremovalofthespringcartridge.
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 A compressed heavy-duty spring is packed in a spring cartridge of Type FAS spring
returnactuators.  Carelessdisassemblyofthecartridgemaycausethespringtojump
outandresultindamageofpropertiesorinjuryofpersonnel.  Don’tloosenaretainer
guidefromthespringcover.
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 Don’t fall or step on a spring cartridge.  Careless or rude handling may cause an
unintendedseparationofthehighlyenergizedspringfromthecartridge.
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 Don’tremoveanendcoverfromapressurizedactuatorhousing.  Disassemblyofany
energizedactuatorisforbidden.
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 Don’tusecompressedairasthemeasureofdisassemblyofanactuator.  Apistonmay
hazardouslyjumpout.
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Retainerguide
Springretainer
Spring
Springcover