hi does anyone have any experience of miller ac dc tig welders. there is an old one on flebay im looking at. i would like to know if they are any good and also if they are reliable. the item no is. 250783910975. any help will be appreciated.
I know of one Miller in a factory which is used every day and has been no trouble for years. The owner has recently bought a more modern Miller, a Dynasty 200DX which he is also very impressed with.
They're good machines, but that's a VERY old unit. I think you could find something a bit newer with more features for that kind of money. I've had a dialarc or two in the past, I'd aim for something like that as a minimum.
Probably a decent welder if it has been cared for, but certainly not a bargain. Al.
Mine is 38 years young. Still works like new. Actually is an Airco, Miller made them for Airco then bought out Airco.
It is a single-phase machine (all AC/DC transformer TIGs are.) Can be wired for 208, 220, 480 and I think 380V AC.
They did not say the model number. There was a 200 and 300 amp version. This is the "old school" rating. My 300A goes up to 475 amps, has 60% duty cycle at 300A.
Mine runs off a 50A breaker on 220V. It specs 108 amps at full load . Still gives me 200A out with no problems.
The footpedal and remote control are hard to find and are specific to the unit.
Usually what fails on these is the oil-filled HV caps. I made replacements using modern parts.
That is a high price for it. Have seen "unknown condition" ones for $200US. Highest I've seen sold is around $600, one at $900 but was complete with torch, tanks, pedal and fully restored. I got mine for way less than the scrap value (about $300 in copper at the time.)
Edit: That does look the the "extended range" model that goes down to 1 amp. And mine weighs 750lbs (370kg).
hehe, yeah grab the hook on the top and throw it on my back for site work Was the only time I saw my engine hoist flex when i moved it into the garage.
I got it as part of an ebay steal with 2 other industrial welders.
While cleaning it up and looking for info, I saw a utube vid of some guys Tesla coil. He was feeding it 100 amps at 220V. Huge bolts of lightning some 30' long...The Airco specs the same current/voltage.
..Believe me I hid under the bench when I fired it up