13
1
Maintenance
Study the instructions carefully.
The items refer to the drawings and the parts list on
page 16-19.
Lubricate the lip seal before fitting it.
NO = Normally open.
NC = Normally closed.
3. Reassembly
1. Supply compressed air and current of
20 mA to open the NC version.
Pay special attention to the warnings!
2. Fit seal ring (4c) in valve body (1).
3. Fit the actuator and the internal valve parts.
4. Fit and tighten clamp (3).
6
5
1. Adjust the valve plug adjuster so that it
contacts the actuator piston rod.
2. Tighten lock nut (8) using a spanner.
3. Fit and tighten clamp fitting (9) to connect
the actuator piston rod with valve plug (2).
4
Screw lock nut (8) and valve plug adjuster (7) onto
valve plug (2).
3
Fit lip seal (4a) and plate (4b) on valve plug (2).
2
Fit bearing (6) in bonnet (5).
1. Fit bonnet (5) on actuator (11).
2. Tighten striking nut (10) using a plastic-
hammer.
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