5 Maintenance
Study the instructions carefully. The items refer to the parts list and service kits section. Handle scrap correctly.
NC = Normally closed.
NO = Normally open.
5.2
Dismantling of valve
1. Supply compressed air to the actuator (only NC).
2. Loosen and remove clamp.
3. Release compressed air (only NC)
4. Lift away the actuator.
5. Unscrew and remove valve plug.
6. Remove O-ring, lip seal and bushing in bonnet. (Use bushing
tool and rubber mallet).
Pay special attention to the warnings!
Note!
For plug seal replacement please see chapter 5.3 Plug seal
replacement
2404-0018
TD 461-837_1
5.3
Plug seal replacement
1. Remove old seal ring using a knife, screwdriver or similar.
Be careful not to damage metal parts.
2. Pre-mount plug seal without pressing it into the groove.
3. Squeeze plug seal into the groove using opposite pressure
points.
4. Release compressed air behind plug seal.
1
4
3
2
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Summary of Contents for Unique RV-ST
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