Millarmatic 252 buzzing but why??

[Miss the Pontiacs]

My buddy asked me if I had any idea what was causing The buzzing on his Millermatic 252.
I have no idea but said I might know of a few people would have an idea. Guess what those people are you guys.
He said originally the welder operated quietly without buzzing says it doesn’t affect usage.
Any ideas?

 

[PCustoms]

Transformer is loose

 

[BukitCase]

Is the buzzing continuous or intermittent? if intermittent, it could also be the cooling fan - the mm252 is fan on demand so fan only runs when the temp exceeds setpoint... Steve

 

[Miss the Pontiacs]

Transformer is loose

Appreciate the input, will mention this to my buddy. Thanks

Is the buzzing continuous or intermittent? if intermittent, it could also be the cooling fan - the mm252 is fan on demand so fan only runs when the temp exceeds setpoint... Steve

The buzzing started as soon as he turned on the box. Sounded electric not metallic but when he has it tore down will suggest he check the fan mounting bolts. Thanks

 

[May Pop]

It does not know the words!

 

[LXCam]

Mine did it every once in a while. It’s definitely a transformer buzz. The last time I tore it down and cleaned it thoroughly nothing was loose. But it also hasn’t done it since. It also didn’t start doing it till after getting bounced around for a remote project one time. So no doubt something got worked loose during that trip.

 

[Miss the Pontiacs]

MP It is buzzing not humming lol

 

[jonshonda]

Too much to drink, not enough to eat!

 

[Ign]

So I don't think this is your problem but my local trade school ran a literal fleet of these. The early units had some sort of issue where they'd essentially begin to only weld on one leg (of power). At first glance it'd appear ok but the more you used the machine you'd realize it wasn't welding right.

I never experienced this, am merely relaying what my instructor told me. Furthermore, I was never told of a buzz accompanying said issue, but in the school I doubt a buzz would have been noticed with 30-50 kids welding and grinding and running the shear and ironworker and tungsten grinder and and and .......

 

[Miss the Pontiacs]

IGN the way I look at it is any accurate information is good info. I have picked up a lot of know how on GJ much of it not even related to the thread where it was found. So did you continue on in welding or where did technical take you?

 

[Miss the Pontiacs]

Too much to drink, not enough to eat!

Thought I would look up a few jokes about welding and drinking. I’ll post them.
But something I found that I didn’t know was the following.
So why do welders drink milk? The fumes released when welding, cutting, or brazing galvanized steel can cause a condition known as Metal Fume Fever. The thought is that milk helps the body rid of toxins encountered when welding galvanized steel and thus prevents them from getting sick.
Never knew this before.