GE Baker Hughes Masoneilan SVI FF Installation And Operation Manual page 74

Inspect Actuator, Linkages, or Rotary Adapter
Verify that the mounting has not been damaged in shipment for a pre-mounted SVI FF,
physically inspect the actuator, linkage. Record the following information for the configuration
checkout:
1. Valve Air to Open (ATO) or Air to Close (ATC)
2. Actuator pressure rating
3. Actuator bench range
4. Inherent trim characteristic of the control valve; linear, equal percentage, or other.
NOTE
Verify Mounting and Linkage Adjustment
Inspect the mounting and make any needed adjustments before running the positioner and
checking the digital configuration.
Check the Magnet
There are two methods of checking the SVI FF magnet:
"Perform a Visual Inspection"
"Use ValVue to Check Magnet Position" on page 76
Perform a Visual Inspection
You must remove the positioner from the bracket to visually inspect the magnet orientation.
For rotary valves, such as a Camflex, or for actuators with rotation of less than 60°, the
magnet assembly must be aligned as shown in Figure 37.
Figure 37 Magnet Orientation for Rotary Valves with Valve Closed
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BHGE
Refer to the valve data sheet or model number of control valve.
Magnet
Axis
with
Valve
Closed
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