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?
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Thread: Spectrum 625 xtreme fan noise
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01-16-2013, 10:25 PM #1
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Spectrum 625 xtreme fan noise
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01-16-2013, 10:27 PM #2
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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.
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01-17-2013, 06:48 AM #3
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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
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01-17-2013, 09:58 AM #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.
Trailblazer® 302 Air Pak™
Miller Dynasty® 350
Millermatic® 252
Syncrowave 351
SuitCase® X-TREME™ 12VS
Millermatic® 211 Auto-Set™ w/MVP™
Spoolmate™ 100 Series
Diversion™ 180
Spectrum® 625 X-TREME™
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01-18-2013, 01:35 AM #5
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thanks guys.
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01-23-2013, 01:42 PM #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


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