5 Maintenance
Study the instructons carefully.
The items refer to the parts list and service kits section.
Lubricate the rubber seals and the lip seal beforefitting them.
Step 4
1. Fit the plastic ring of clip assembly (11) on the actuator piston
rod
2. Supply compressed air to the actuator (Only NO)
3. Fit valve plug (19, 20)
4. Fit and assemble clip assembly (11) by using pliers. (For sizes
DN125-150: Screw together valve plug (20) and piston (6). Fix
thread by using Loctite or something similar))
5. Release compressed air.
Pay special attention to the warnings!
Air (NO,A/A)
Air
Air (NO,A/A)
TD425-070_1
Shut-off valve
Change-over valve
Step 5
Shut-off valve
1. Supply compressed air to the actuator (only NC)
2. Fit the actuator
3. Fit and tighten clamp (15)
4. Release compressed air.
Pay special attention to the warnings!
Air (NC, A/A)
TD425-226_1
Step 6
Change-over valve:
1. Fit seal ring (17) correctly in lower valve body (18)
2. Supply compressed air to the actuator (only NC)
3. Assemble lower and upper valve bodies (16, 18)
4. Fit and tighten lower clamp (15)
5. Release compressed air
Pay special attention to the warnings!
Air (NC, A/A)
Turn the
diagonal
surface
of seal
ring (17)
upwards!
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