Fisher 3590 Valve Positioner Manual -

Proper mechanical mounting is critical. Incorrect installation is the #1 cause of instability.

Critical Warning from Manual: Do not overtighten the cam locking screw. Use threadlocker on the feedback linkage screws to avoid loosening from vibration. fisher 3590 valve positioner manual

The manual details three primary mounting types: Proper mechanical mounting is critical

The manual emphasizes three core mechanical subsystems: Critical Warning from Manual: Do not overtighten the

For 4–20 mA models with I/P: