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  1. #1
    Join Date
    May 2007
    Location
    Los Angeles
    Posts
    130

    Default Spectrum 625 xtreme fan noise

    I just bought a Miller spectrum 625 xtreme and i noticed that when i go to shut off the unit the cooling fan kicks in and goes to what it seems like full RPM for a second or two before it shuts off. It will do this even if i turn the unit on and then off again without even cutting anything. Is this normal?

  2. #2
    Join Date
    Nov 2012
    Location
    Northern Arizona
    Posts
    456

    Default

    I think it is. Same behavior on my cst280 stick machine. Heck, If forget to power it off and the unplug it the fan will crank on for a couple seconds. I've also seen this with a 875 plasma.
    MillerMatic 251
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  3. #3
    Join Date
    May 2012
    Posts
    27

    Default

    My 875 does the samething. They told me that is normal. I have had this machine going on almost two years and it is awsome. Ask cruzier first he knows his s#%t.good luck

  4. #4
    Join Date
    Jun 2012
    Location
    Tracy, CA
    Posts
    218

    Default

    Yes. I have the 625. It's always done it. Even if I just turn it on and off again without using it. It also does it if I unplug it from the wall without turning the power switch off first.
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  5. #5
    Join Date
    May 2007
    Location
    Los Angeles
    Posts
    130

    Default

    thanks guys.

  6. #6
    Join Date
    Aug 2011
    Location
    Appleton Wisconsin
    Posts
    38

    Default

    The fan turning on is normal. The unit uses the fan to bleed off the voltage stored on the bus capacitors.
    Tim Lux
    Service and Aplications Specialist
    Miller Electric Mfg. Co

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