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Original document - Mi-205 EN Edition: 2021-04
5.6 Assembly of the pneumatic actuator
Note
Observe also the detailed information in the operating manual of the actuator Mi-503EN.
Warning!
Before assembling or disassembling the pneumatic actuator of a butterfly valve installed in the
pipeline depressurise the relevant valve in the pipeline system, isolate the valve and remove the
medium before working on the valve.
The pressurised medium may lead to injuries to personnel.
Warning!
Before carrying out maintenance or repair work on the valve with actuator as well as installation
and disassembly of the butterfly in the pipeline, always disconnect the compressed air supply to
the actuator.
Single action actuators may move to “open” or “closed” position without being connected to the
air system.
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