Midstates 300 Inert

[Robdiesel.707]

Does any one have one?

[Jim Caudill]

Your message is less than clear. Frankly, I had never heard of a "Midstates 300 inert".

After some searching, I did find a free Technical Manual that may be of some assistance. In my searching, I noticed that you purchased a somewhat non-functioning Midstates 300 amp welder that is capable of TIG welding (when working properly) last November for around $200.

I don't know how many 300 amp welders that Midstates made that are "TIG ready", but this link to a downloadable pdf version of the manual may help you get yours working. If not, then others may benefit from understanding what it is that you are seeking.

Here's the link:
http://www.liberatedmanuals.com/TM-5-3431-203-15.pdf

[macona]

I thought he was asking for a 300cf inert gas bottle from Midstate welding.

[Robdiesel.707]

The Midstates Inert 300 is a 300 amp Tig welder that came with 2 torches and everything but the flowmeter + 200+ lbs filler rod (assorted types). I have wired it up and it works. There are a set of points inside that need cleaning. I was wanting to know if anyone out there has the same welder. It is supposed to be the same as a Airco Heliweld 2, just wanting to get some feedback on any ajustments ect.

[macona]

If it is the same as the airco heliweld II you might be able to get some info from esab tech support. That thing was made partially by them. Other than that you are going to have to find an old welder repair shop which still has the manuals on paper or fiche.

Post a pic and I can tell you if it is the same machine.

Try around .008 for the gap. Its not that critical.

[Robdiesel.707]

I haven't got the pic thing figured out yet. So the points have a screw type ajustment? On my welder there is a door at the top face of the machine with a key lock. Behind the door is where all the relay's are and switch's ect. The points I belive are in the upper right hand side. The guy I bought the welder from didn't have the time to mess with the machine as he had bought an estate sale and didn't have room for the welder. True to his word the welder does run on the stick sidee and I'm positive it will also run on the Tig side. The points need to be cleaned and re-gaped as they don't lock in they just buzz. It also could be a power problem inside the machine but the guy at the local welding shop said it was probably the points needed cleaning. The machine had been stored for a good 20 years I was told.

[macona]

http://bbs.homeshopmachinist.net/showthread.php?t=29277

Are you talking about High Frequency points or something like the main contactor? If the machine buzzes you may have dirty poles in a contactor somewhere. You can disassemble it and clean out the could and it should quiet down.

HF points will make noise when they are being used. Kind of a frying bacon sound.

[Robdiesel.707]

yes the noise sounds like eggs frying and I ajusted them to .008

[Robdiesel.707]

Name is Mike, for the fella that has knowlage about this type of welder; I look further into the machine, through the door opening with the door limit bar undone, and see there are at least 2 relays down to the lower left side, is yours that way? I have an intermitant problem with the HF comming on. When it's on the points buzz and the HF light is on but it seems like a switch thing. But then I see the relays and wonder if it's a bad relay. The relays are a tall cube type. Do you have this type? Thank's Mike

[macona]

Relays do go bad. Pull it and look up the number to get a replacement. Nothing terribly special about them.