Kitz F Series - Page 52

Document No.：KE-4010-11                                            Page: 49/58
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7.  ConversionofActuatorDriveMode 
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7.1TypeFAdoubleactionactuatorscanbeconvertedtoTypeFASspringreturnactuatorsbyreplacementof
severalparts.
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(1)Disassembletheairtubing,equalizethehousingpressurewiththeatmosphericlevelandremovetheleft
hand end cover ( with air inlet/outlet ports facing to the front) of an actuator set for the standard
AIR-FAIL-CLOSEmode.  IfyounowwanttheoppositeAIR-FAIL-OPENmode,removetherighthandend
coverinstead(Fig.8).
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 Fig.8
           Fig.9 
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(2)Mounta stopperbolt,asealwasher,ahexagonnutandabreathingholeplugon aspringcartridgeunit
(Fig.9).  PuttheO-ringremovedfromtheendcover,oranewO-ringifneeded,onthespringcartridgeunit.  
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(3)Insertthespringcartridgeunitintotheendcoveropening,andsecurelyfixitwith4hexagonheadedbolts. 
(Fig.10). 
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(4)PutaplugtoPort[S](Fig.10). 
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 Fig.10
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(5)Adjustthevalveopeningrange,followingSection14oftheoperationmanual.
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(6)Energizetheactuatorfortrialoperationtoensuretrouble-freefunction.
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(7)InsertMizukilleronabreathingportofaspringcase.
Springunit
O-ring
Breathingholeplug
Stopperbolt/Sealwasher/ 
Hexagonnut
Hexagonheadedbolt
Plug