Kitz F Series - Page 31

Document No.：KE-4010-11                                            Page: 28/58
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④ Leaktestshouldbedoneafter15minuitsto30minutspastsincepressurizingactuators.Ifnot,internalair
residueremainsandtheleaktestcannotbedonewithaccuracy.
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⑤ Wipeoffallsoapsolutionafterwards.
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Ifany leakagehas been detected,disassembletheactuator againto checkif any part or componentis
scratched,deformedorworn,andreplacethem,ifnecessary,withKITZgenuineparts.
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(11)Plugtheleakdetectorholewithasealwasherandahexagonheadedbolt,tocompletereassemblyofan
actuator(Fig.19).
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(12)MountanindicatorplateontopofthehousingwithtwoheadedscrewssothatMark[O]maypoint(a)the
left-hand of the housing for ball valves, or(b)theair inlet/outletportsforbutterfly valvesas shown in
Fig.20.  Aftercheckingcorrectmountingoftheindicatorplate,assembleapositionindicatorthroughthe
shaftsecurelywithasnapring.
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
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Fig.19
Fig.20 
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(13)Checktrouble-freeoperationofreassembledactuatorsandmountthemonvalves.
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21.4Bolttighteningtorques 
Allboltsandscrewsshallbesecurelytightenedwiththetorquesrecommendedbelow:
Recommendedbolttighteningtorques [N・m ]
Actuatorsize FA/FAS-1 FA/FAS-2 FA/FAS-3 FA/FAS-4 FA/FAS-5 FA/FAS-6
Piston/ 
rackassembly
M5;  2〜3 M5;   2〜3 M6;   4〜5
M10;  17〜20 M12;  29〜34 M16;  71〜84
Endcover/
springcover
mounting
M6; 4〜5 M8;  9〜10 M10;   17〜20
M10;  17〜20 M12;  29〜34 M16;  71〜84
Opening range
adjusterbolt
M6;  3〜5 M8;   5〜8 M10;    9〜15
M12;  25〜30 M16;  40〜50 M20;100〜120
Leak detector
holeplugging
M5;  2〜4
Airinlet/outlet
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Forballvalves
Airinlet/outlet
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Forbutterflyvalves
Indicator<97>
Indicatorplate<98>
Snapring<48B>
Headedscrew<39>
Sealwasher<155B>
Hexagonheadedbolt<13B>