Fisher 3560 Valve Positioner Manual Pdf -

The Fisher 3560 series pneumatic valve positioners have been largely superseded by newer models like the Fisher 3660

1. Installation: Mounting position, cam selection (rotary vs. linear), and conduit connections.
2. Principle of Operation: How the flapper/nozzle and relay work together to multiply output pressure.
3. Calibration Procedure: Step-by-step zero (low signal) and span (high signal) adjustments.
4. Parts List: Exploded view diagrams with kit numbers for repair and maintenance.
5. Troubleshooting Table: "If the valve fails to move when increasing signal… check these three things."

• Hunting cycle? → Check for loose feedback linkage.
• No response? → Check nozzle clog.
• Sluggish response? → Check relay diaphragm.

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