Emerson Advantage 2.1 Installation, Operation And Maintenance Manual page 15

4. Rotate the diaphragm until hard stop or heavy resistance is achieved and additional force
does not significantly rotate the diaphragm into the compressor.
5. If replacing a PTFE diaphragm, re-invert the diaphragm.
6. If the actuator mode of operation is fail open or fail close, select one of these steps.
If the actuator
mode of
operation is ...
Fail open
Fail close
7. For more information, see
8. If the actuator mode of operation is fail open, then release the air, allowing the valve to
open.
Advantage 2.1 Actuator Installation and Operation Manual
Designed and Manufactured by ITT
Then ...
Reduce the air pressure until the back of the diaphragm is flat against the
bonnet.
1. Connect the air line to the bonnet's cylinder.
2. Load the chamber with sufficient air to move the diaphragm upward until the
back of diaphragm is flat against the bonnet. Do not apply excessive air
pressure that results in inversion of the diaphragm.
Tighten the bonnet fasteners
Installation
(page 10).
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