I recently acquired an old Airco stick welder, manufactured, I think, sometime in the late 1960's or early 70's, with the thought of restoring it for use. The welder ID is as follows:
Airco BusyBee Transformer Welder, 225 Ampere A.C. MSM
- Model 2-25ADT-2P-A
- Stock no. 1353-01451
- Made by Miller
- Manual:MEMCO Miller Welders Model M-180, M-180P, M-225, M-225P Operating and Maintenance Manual Form no. MO-114-8J-C2
the welder clearly had sat for a few years in a somewhat damp location, and I fortunately decided to remove the cover to verify the condition inside, which revealed a cracked power cord and a mouse nest, and a somewhat rusty chassis. The transformer looks good and the core slides easily, but the case of the large capacitor used for power correction was very rusty. I decided that the condition of the capacitor was suspect enough that I would clean it up to make sure I would see any leaks rather than leave it alone, knowing that when I touched it with a wire brush I might find myself with some leaks.
Unfortunately, that is exactly what happened: the rust had weakened the case at the bottom and I now have a couple of pinhole leaks. I probably lost only a drop or two of oil so far.
Initially, I thought I would just buy a replacement Miller capacitor. The Miller part number was listed as 31614, and when I did a search, I found it was replaced by Miller part number 059417. The description is as follows:
Capacitor, Ppr Oil 30. Uf 460 Vac Part# MI059417. The price of the replacement was well over $200! The welder isn't worth putting that kind of money into it. So...either I plug the leaks and hope the existing capacitor is serviceable, or try to find a cheaper alternative.
Here are my questions:
1. Is it practical to just clean up the case of the capacitor and seal the pinholes with JB-weld? I believe I lost just a very small amount of oil, perhaps a couple of drops at most. Is it safe to patch the case and put it back in?
2. Is there a less expesnive alternate capacitor I could find that would do the job? I have done searches and have come across some HVAC dual core capacitors with the same UF and voltage rating, and they are less than $10. Will one of those work? If not, what should i be looking for?
3. Should I just salvage the cables and cord, and find another welder? I don't mind fixing this machine if it will perform safely and I don't have to spend over a $100 in parts; there doesn't seem to be much to the machine itself.
On the other hand, I don't want to be foolish and invest in a welder that is outdated. It is only an AC model, but with copper windings, and it weighs about 150 pounds.
Finally, I should add that the only welding I have done in my life dates back thirty years ago with a torch; this will be a new experience for me teaching myself to weld, and then hopefully finding a class somewhere.
Thoughts? Advice? I am attaching a couple of pictures for reference, before I took it apart. Thanks.
Results 1 to 8 of 8
05-31-2013, 11:24 PM #1Junior Member
- Join Date
- May 2013
- Northern VA
Restoring old Airco BusyBee 225 amp, 220v AC stick welder (Miller equivalent M225P)