The Fisher valve is not functioning
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With the fisherdvc6200 locator, the valve on-site can only be fully open; it cannot be set to any intermediate position. The current measured on-site is normal
Check if the debugging mode hasn’t been exited
First, check whether the feedback rods of all valve connections are loose or detached
There are no other abnormalities; it is suspected that there may be a problem with the locator
Ah, it’s a FISHER model; I’ve taken it apart and it’s not easy to repair
I don’t know if it’s split or integrated
Press the amplifier down with a screwdriver to see if the valve moves
Let me give an overview of the valve’s air circuit; please analyze it
It’s quite ordinary: the air supply enters through a filter and pressure reducing valve, followed by a positioner and a cylinder
Fisher’s locator, Tyco’s valves