Series 111
16/27
Edition 09.07.2019
984132EA
7.3
Replacement of valve gate / mechanism unit
WARNING
Loaded spring steel sheet
Human body parts may get jammed and severely injured.
Do not put human body parts between valve gate and spring steel sheet.
NOTICE
Contamination
Product may get contaminated.
Always wear cleanroom gloves when handling the product.
NOTICE
Inappropriate tools
Sealing surfaces may get damaged.
Do not use sharp-edged tools.
1.
Vent chambers on either side to atmospheric pressure.
2.
Open the valve.
3.
Disconnect compressed air supply.
4.
Disconnect electrical power supply.
5.
Remove screws (1) according to «Figure 7-2» on page 17.
6.
Lift actuator / mechanism unit carefully from body without touching the body wall;
see «Figure 7-2» on page 17. Use only the eyebolt threats; see dimensional drawing.
7.
Remove locking ring (5) according to «Figure 7-3» on page 17.
8.
Withdraw bolt (4) by pulling it downwards according to «Figure 7-3» on page 17.
9.
Put mechanism to the horizontal position.
10. Insert new mechanism in reverse order.
11. Mount bolt (4) according to «Figure 7-3» on page 17.
12. Mount locking ring (5) according to «Figure 7-3» on page 17.
13. Clean sealing surface of bonnet flange and valve seat, use cleanroom wiper.
14. Replace bonnet seal.
