Document No.:KE-4011-03 Page: 11/27
16. Automated Operation of Actuators
16.1 KITZ FBS pneumatic valve actuator is operated with the standard air pressure of 0.4MPa , however,
can be set for operation with minimum 0.3MPa and maximum 0.7MPa air pressure. Actuators
equipped with air filter-regulators are set for operation with 0.4MPa.
16.2 Compressed instrumentation air ( or nitrogen gas ) is the standard operation medium. Use of air
filters and air dryers are recommended to keep the air in the housing dry and clean for trouble-free
operation of actuators.
16.3 Check the following points during pilot operation of your actuators.
(1) Check trouble-free function of an actuator by manually or automatically operating it a few cycles.
(2) Check air leakage from the air tubing through a travel from a compressor to the actuator. If the
operation mode of the equipped solenoid valve is changed from AIR-TO-OPEN to AIR-TO-CLOSE
or vice versa, the gasket connection between the solenoid valve and its adaptor must be also
checked for air leakage.
(3) Check if a solenoid valve is provided with your required specifications.
(4) Check if the operating pressure has been set with your required specification.
(5) Check if an equipped air regulator has been set for your required operation pressure.
(6) If a speed controller is equipped, adjust the flow rate of the exhaust air to match your required
operation speed.
Use either compressed instrumentation air or nitrogen gas for operation of
actuators. Use of any other operating medium may affect the function of
actuators.
Use of operation pressure exceeding 0.7MPa may damage actuators or
accessories.
Keep the operation medium completely dry. High humidity causes rust and may
result in malfunction or failure of actuators or accessories.
A part to avoid entering water into a spring case (“Mizukiller”) is installed on
spring return type actuator’s breathing port. And The Mizukiller is sealed with a
sticker. Remove the sticker before running automated operation.
(For products shipped before December 2009, a cap is installed on spring return
type actuator’s breathing port instead of the Mizukiller. Remove the cap before
running automated operation. If the cap remains, actuator speed may become
slow.)
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