Masoneilan Positioner Output Signal Repair – DAP Factory

Information:
Masoneilan Positioner, Model: SVI II AP.

Condition:
The new positioner has never been used but does not operate and does not output any signal.

MOG’s Solutions:

• Removed the positioner and inspected each component, identifying the cause as a faulty 4-20mA control circuit;

• Replaced the main control circuit board;

• Installed it on the demo valve, including the feedback linkage, to test operation;

• The positioner is now functioning normally.