Kitz F Series - Disassembly and Reassembly of Actuators ・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・２０

Document No.：KE-4010-11                                            Page: 20/58
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20.5Ifalubricatorisused,thequalityofthelubricantmustbeappropriatelycontrolled.  Werecommenduseof
TurbineOilClass1ISOVG32,ortheequivalentforrefill.
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20.6 Seal washers are used for cylinders stopper bolts. Leakage may occur from the seal washers after
long-termuse.Thenretightennutsorreplacesealwashers.
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20.7Ensuretocarryoutthefollowinginspectionsperiodically.  Doitasfrequentlyaspossibleforsafeand
trouble-freeoperationofactuatorsandactuatedvalves.
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◇ Checkthefullyopenorclosedpositionofavalve.
◇ Ensurethat the valveopening orclosing rangeis correctly maintained in accurate response to a signal
currencyorasignalpressureofactuatorsandaccessories.
◇ Checktheairleakagethroughallairtubingconnectionsandvalves.
◇ Checkanabnormalnoisegeneratedfromtheairtubingorvalves.
◇ Checkvibrationofactuatorsandvalves.
◇ Ensurethatallboltsandnutsaresecurelytightened.
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  Don’tuseanyspindleoilorgearoilforlubricationofactuatorsandaccessories.
 Anabnormal noise may be generated due to valve seatgalling (valveseats getting
stuck with foreign objects ) or blockage of actuator air tubing caused by internal
residues.  Take corrective measures immediately, since damage of valve seats and
malfunctionofactuatorsandvalvesmaybecausedbynegligenceofsuchproblems.
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 Ensuretoreplaceterminalsofelectricdevices,ifneeded,withthosedesignedwiththe
same specifications.  Different design specifications could be a cause of technical
troubles.
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 Leavinganabnormalvibrationofactuatorsandvalvesalsocausesequipmentfailure.
Supportthepipingsystemsecurely.
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21.  DisassemblyandReassemblyofActuators
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21.1 KITZ F Series pneumatic valve actuators are available in two types, depending on the basic drive
mechanism.  WhileTypeFAactuatorsaredesignedfordoubleactiondrive,springcartridgemodulesareadded
toType FA mechanismtomakeType FAS spring returnactuators.  When you disassembleor reassemble
theseactuatorsforinspectionormaintenance,theutmostcaremustbetakentorespectthewarningsand
cautionsmentionedhere.