Miller 330 A/BP Noise

[willoland]

Hello,
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?

Thanks,
-William

[riley mcmillan]

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.

[smithboy]

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.

[willoland]

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!!

[smithboy]

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.

[willoland]

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.

[smithboy]

Ahhhh...
The old contactor. I wouldn't have guessed that.

[riley mcmillan]

Looks like a relay. What was the price, and the part number, just in case I might need one. Thanks

[willoland]

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.

-William

[Cruizer]

It's just a 60 amp 115Vac definate purpose 3 pole contactor Furnas (bought out by Siemens)