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  • RoughneckDave
    started a topic xmt 450 fan

    xmt 450 fan

    Got a new xmt 450 at work running on 3 phase. Fan runs constantly. Even with no welding. How does the fan on demand supposed to work?

    Thanks

  • cruizer
    replied
    Then either the top control board fan control is pooched or simply its a failer thermistor likely the one mounted near the igbt's, right side under that big board

    Leave a comment:


  • RoughneckDave
    replied
    Originally posted by cruizer View Post
    Soooo, you turn the unit on and the fan runs, or do you let it sit and the fan runs in about 10-15 minutes, cause that would be normal as is still producing a minimal output internally
    Runs from the get go.

    Thanks

    Leave a comment:


  • cruizer
    replied
    Soooo, you turn the unit on and the fan runs, or do you let it sit and the fan runs in about 10-15 minutes, cause that would be normal as is still producing a minimal output internally

    Leave a comment:


  • 1997CST
    replied
    If it's less than 3 years old your machine is under warranty. I would take it to a repair center.

    To answer your question, RT1 and RT2 heat sinks sense the temperature increase and PC1 turns on both fan motors.

    Leave a comment:

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