MAINTENANCE
Series 264
18/26
Edition 2013-10-09
603392EA
6.3.1
Dismount actuator / plate assembly
WARNING
Movable parts
Human body parts may get jammed and severely injured.
Keep human body parts away from movable parts.
The follow item numbers in brackets refer to «Figure 6-2» on page 17.
1. Open the valve by means of compressed air and hold the position with a nonreturn
valve. If a solenoid valves is assembled to the actuator you may use the emergency
operation button on the solenoid valve to remain the valve opened.
2. Loosen and remove screws (60) uniformly and in crosswise order.
2. Withdraw actuator / plate assembly carefully from body.
3. Remove bonnet seal (62) from groove by using an O-ring removal tool.
6.3.2
Replacement of plate seal
1. Remove plate seal (61) from groove by using an O-ring removal tool.
2. Check sealing surface and clean it with a cleanroom wiper.
3. Put new plate seal (61) on groove and press it into groove at 4 opposite spots.
4. Press remaining sections uniformly into groove.
6.3.3
Mount actuator / plate assembly
1. Check sealing surfaces of bonnet flange / valve seat and clean them with a cleanroom
wiper.
2. Put bonnet seal (62) into body.
3. Insert actuator / plate assembly carefully.
Do not cant
!
4. Fasten screws (60) uniformly and in crosswise order, in 2 to 3 rounds.
