For current applications requiring similar functionality, Emerson typically recommends the Fisher DVC6200 series of digital valve controllers or to find a compatible replacement for an existing unit?
There are different types of manuals available for the Fisher 3590 Valve Positioner, including: fisher 3590 valve positioner manual
Observe the valve position. The valve stem should just begin to move from its fully resting or closed state. If the positioner does not respond correctly, use
If the positioner does not respond correctly, use this matrix to identify and resolve the root cause. Potential Cause Corrective Action No air supply or low pressure Check regulator gauge; verify supply line is clear. Missing input signal Measure mA current at the terminal block with a multimeter. Slow or sluggish response Clogged internal pneumatic relay Clean or replace the internal relay assembly. Air leaks in tubing Apply soapy water to joints; tighten loose fittings. Valve hunts or oscillates Loose feedback linkage Slow or sluggish response Clogged internal pneumatic relay
Check for loose feedback linkages or excessive friction in the valve packing. Cleaning the Orifice
Unscrew the bellows posts, invert the bellows, and adjust the bias spring to ensure the correct starting point of the piston travel. Document Change: Note the action change on the label. 3.3 Zero and Span Adjustment
Connect the OUTPUT port directly to the actuator diaphragm casing or piston cylinder.