ITT Engineered Valves BioviZion, Инструкция по установке, эксплуатации и обслуживанию, Страница: 26 / 32

Figure 25: Diaphragm Installation
12. Rotate the diaphragm assembly 90° until the long tabs fit into the thin bonnet recesses.
NOTICE:
The diaphragm assembly should turn freely with minimal resistance. If resistance is felt reverse
diaphragm installation and remove the diaphragm from the compressor slot. Ensure pressure
ring is flush with bonnet flange and the compressor is extended.
13. Lightly pull the diaphragm away from the compressor to confirm a secure installation.
14. Adjust the spindle position until the diaphragm flange is flush with the bonnet, not deformed, and
with the tabs securely engaged into the bonnet recesses.
15. Turn the handwheel counter clockwise to position the diaphragm.
16. Ensure that the backing cushion is still properly centered.
17. Place the topworks assembly on the valve body.
For more information see 4.2 Assemble the BioviZion Valve on page 11
6.7 Replace the EnviZion Valve Diaphragm
1. Disassemble the valve.
For more informaiton see
6.5 Disassemble the EnviZion Valve on page 22 .
2. Secure the bonnet in the inverted orientation.
3. Close the valve.
If the topworks is Then
Manual Turn the handwheel clockwise to the closed position.
Actuated Fully extend the spindle to the over-travel position. This may require ac-
tuator pressure, depending on the actuator mode.
4. Lift the edges of the backing cushion to detach it from the compressor ring.
5. Turn the diaphragm and backing cushion assembly 90° in either direction.
6. Lift the diaphragm and backing cushion assembly up off the bonnet.
7. Replace with a new diaphragm.
NOTICE:
Inspect the diaphragm sealing surface and do not use the diaphragm if the seal surfaces are
defective.
6.7 Replace the EnviZion Valve Diaphragm
24 EnviZion and BioviZion Valves Installation, Operation, and Maintenance Manual