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Spectrum 625 xtreme fan noise

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  • 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
    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
    Maxstar 150 STH
    Cutmaster 42
    Victor Journeyman OA

    A rockcrawler, er money pit, in progress...


    • #3
      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
        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.
        Lincoln Vantage 400
        Trailblazer® 302 Air Pak™

        Miller Dynasty® 350
        Millermatic 350P Aluminum
        Millermatic® 252
        Syncrowave 351
        Lincoln LN-25 Pro

        Multimatic™ 200

        XR-Aluma Pro Gun
        Diversion™ 180

        Spectrum® 625 X-TREME™

        Thermal Dynamics® Cutmaster® 52
        Victor Oxy/Acetylene Set


        • #5
          thanks guys.


          • #6
            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