Verify the 25%, 50%, and 75% travel points against the corresponding input signals (e.g., 6, 9, and 12 psig for a 3–15 psig range). Maintenance and Troubleshooting Common maintenance tasks involve:
Increase the input signal to the maximum (e.g., 15 psig). Adjust the flapper assembly or span adjustment screw until the valve reaches the full intended travel.
During installation, it is vital to correctly set the based on the actuator travel. For travels between 20 and 30 mm, the long portion of the plate's slot should be closest to the positioner. Calibration Steps for the 3560 Fisher 3560 Valve Positioner Manual Pdf
Standard ranges include 0.2 to 1.0 bar (3 to 15 psig) or 0.4 to 2.0 bar (6 to 30 psig).
Maximum pressures can reach up to 10.4 bar (150 psig) depending on the specific configuration, while the minimum is typically around 2.4 bar (35 psig). Verify the 25%, 50%, and 75% travel points
Used when the actuator has tapped holes in the posts.
The provides two primary mounting methods: During installation, it is vital to correctly set
Standard nitrile O-rings and diaphragms are rated for –34 to 71°C (–30 to 160°F). Installation and Mounting Procedures
Understanding the performance limits of the 3560 series is critical for safe operation:
The Fisher 3560 (often cited alongside similar legacy models like the 3582 or 3570) is a single-acting pneumatic positioner. It is typically used with diaphragm-actuated, sliding-stem control valve assemblies to modulate supply pressure and maintain a specific valve plug position. Key Technical Specifications