Integral Mounted Fisher Actuators; Air-To-Open (667 Size 30I - 76I Or Gx) - Emerson Fisher FIELDVUE DVC7K Series Quick Start Manual

Quick Start Guide
D104766X012

Integral Mounted Fisher Actuators

1. Isolate the control valve from the process line pressure and release pressure from both sides of the valve body. Shut
off all pressure lines to the actuator, releasing all pressure from the actuator. Use lock‐out procedures to be sure
that the above measures stay in effect while you work on the equipment.
2. The DVC7K digital valve controller mounts directly to an integral mounted Fisher actuator without the need for a
mounting bracket. Make sure you have the correct DVC7K housing for your actuator, as shown in figure 2.
3. For GX actuators, identify the yoke side to mount the DVC7K digital valve controller based on the actuator fail
mode. Refer to the GX Control Valve and Actuator System instruction manual (D103175X012).
4. Loosely attach the feedback pieces and magnet assembly to the valve stem connector. Do not tighten the fasteners
until the magnet assembly is positioned and aligned in steps 5 and 6.
WARNING
Do not install a magnet assembly that is shorter than the physical travel of the actuator. Loss of control will result from the
magnet assembly moving outside the range of the index mark in the feedback slot of the DVC7K housing and may result in
personal injury or property damage.
5. Using the alignment template (supplied with the mounting kit), position the feedback assembly inside the retaining
slot.
6. Continue on with the appropriate procedure below to align the magnet assembly.
Air‐to‐Open (667 size 30i - 76i and GX)
Vertically align the magnet assembly so that the center line of the alignment template is lined up as close as possible
with the upper extreme of the valid travel range on the magnet assembly. The magnet assembly should be positioned
so that the index mark in the feedback slot of the DVC7K housing is within the valid range on the magnet assembly
throughout the range of travel. See figure 8.
DVC7K Digital Valve Controllers
October 2023
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