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04-21-2011, 11:08 AM #1
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JCI VA-7820 or 7830 (valve actuators)
Has anyone had experience with these actuators failing because they indicate losing control signal? I have had several do this and the signal is always present.
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04-21-2011, 12:30 PM #2
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Blue capes and proper pid tuning save actuator lives.
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04-21-2011, 01:36 PM #3
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- Mar 2011
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I have had issues with other JCI actuators and the solution was to reset the 24Vac. The electronics in the actuator were "locking up" and there was a recall placed on the parts. This was a couple years ago on a M9216-HGA valve though. Could be going down the same path. If you have a relationship with the local branch try them and see if they now of a problem. Otherwise try Milwaukwee on the 800# and see if you can get somewhere.
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04-22-2011, 02:50 PM #4
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Froz:
You are correct in that the 24vac removal resets the actuator. But that does not bode well in an automatic control application. I was looking to see if your second part is true that possibly a manufacturing defect is out there since I have some actuators that do not exhibit this symptom.
Freddy:
I took the blue cape off and replaced it with a real superman suit. Glad to know that blue blood runs in your veins though. LOL:
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