Installation, Operation and Maintenance Manual
Control Valves Electric Actuated Type M 24
(15) Countermeasures to avoid leakage (only for body material PVDF)
- Be sure to conduct a regular replacement of damaged parts for permanent measures. (The structure of
tightening the ‘Packing Holder’ is for emergency measures against the leakage from the slide piston.)
- Do not tighten the stopper and the packing holder excessively. (Can damage the products)
- Perform regular maintenance. (Leakage may develop due to temperature changes or over periods of
prolonged storage, rest or in operation.)
Protective gloves Safety goggles Screwdriver (-)
Procedure
1) Turn the stopper [59] counterclockwise by using a screwdriver.
2) Tighten the packing holder [58] clockwise by using a screwdriver properly.
3) Fix the packing holder [58] and tighten the stopper [59] clockwise.
(16) Inspection items
- Perform regular maintenance. (Leakage may develop due to temperature changes or over periods of
prolonged storage, rest or operation.)
Portion to be inspected Inspection item
Actuator
- Existence of rust, corrosion.
- Tightening condition of respective threaded portions. (Loose or not)
- Existence of abnormality in opening and closing operating sounds.
- Smooth operation of manual handle.
* It is unnecessary to supply oil to this actuator.
Va l v e
- Existence of scratches, cracks, deformation, and discoloring.
- Existence of leakage from the valve to the outside.
- Existence of leakage when the valve is closed fully.
Positioner
- Existence of scratches, cracks, deformation, discoloring and rust.
- Tightening condition of respective threaded portions. (Loose or not)
- Existence of air leakage from the air piping.
Caution
Warning
Necessary items
Caution
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