View Full Version : Miller 330 A/BP Noise
06-03-2006, 10:35 PM
Must say great forum.
I recently purchased an old Miller 330 A/BP from GOV auction. Its hooked up and works but it makes a lot of noise. Its NOT fan noise its the type of noise the tansformers make but it seems aweful loud.
Im wondering how yours sounds?
06-03-2006, 10:42 PM
I have had one for over 30 years. Still has the same fan motor in it. The fan has always made some noise, but no transformer noise.
06-03-2006, 11:07 PM
You aren't talking about the high frequency unit are you? Does it sound like a electrical bug zapper set on continuous? Turn off the high frequency and see if the sound goes away.
06-03-2006, 11:18 PM
Yes its one of those high frequency units, and yes it dose sound like that. But as far as i know it is off..... well the switch is off at least. Its not a constant buzz it veries a bit.
thanks for the fast replies!!
06-04-2006, 05:11 PM
Turn off the lights and turn on the welder without connecting the leads. See if you can see a short somewhere. I wonder if the switch for HF might have a problem.
08-14-2006, 11:00 PM
I ended up taking it to a cert tec to have it looked at and it turns out it was what the manual calls a contactor. Its def more quiet.
08-15-2006, 02:26 PM
The old contactor. I wouldn't have guessed that.
08-15-2006, 05:26 PM
Looks like a relay. What was the price, and the part number, just in case I might need one. Thanks
04-18-2008, 01:33 PM
Well, all it is is a monster relay. The correct miller replacement was like $600 but the tech ordered me one for a newer model, ended up being $200.
04-18-2008, 02:00 PM
It's just a 60 amp 115Vac definate purpose 3 pole contactor Furnas (bought out by Siemens)
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