SVI-II Instruc Man.book - Fagerberg

Masoneilan Dresser
SVI II AP Instruction Manual
Physical
Inspection
SVI II AP checkout consists of physical and operational checkout procedures.
The physical checkout procedures are listed below:
Inspect the Actuator, Linkages, or Rotary Adapter
Verify the Mounting and Linkage Adjustment
Check the Magnet
Check the Air Supply
Check the Electronic Module Connections
Valve Mounting
The Air Supply
Actuator, Linkages, or Rotary Adapter
Verify that the mounting has not been damaged in shipment for a
pre-mounted SVI II AP, physically inspect the actuator, linkage. Record the
following information for the configuration checkout:
1. Valve Air to Open (ATO) or
2. Air to Close (ATC)
3. Actuator pressure rating
4. Actuator bench range
5. Inherent trim characteristic of the control valve; linear, equal
percentage, or other.
Note:
Refer to the valve data sheet or model number of control valve.
Verify Mounting and Linkage Adjustment
Checking the Magnet
Performing a Visual Inspection
Inspect the mounting and make any needed adjustments before running the
positioner and checking the digital configuration.
There are two methods of checking the SVI II AP magnet:
Perform a visual inspection
Use ValVue 2.4 to check the magnet
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 degrees, the magnet assembly must be aligned as shown in Figure 17 on
page 31.
For rotary valves, or for actuators with rotations greater than 60 degrees, the
magnet assembly must be aligned as shown in Figure 18 on page 31.
Note:
For a reciprocating valve, it is not necessary to remove the positioner
to visually inspect the magnet setting and linkage of a reciprocating
valve.
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