Test procedure for feeders?

[taltexan]

22a and 70’s mostly. I want to know how to test the boards to check if they are good....

[taltexan]

Where can I find test procedures for Miller feeders? Like the pre power up for the XMT. Thanks...

[taltexan]

Thanks for your help. Everything working.

[taltexan]

Trailblazer 325 EFI. Serial MC490592R

[taltexan]

Excel plugs are not working. The other 110v plugs are fine. I have checked the fuse above the plug and it is ok. Is there a breaker or fuse on the interior of machine? The main breaker on machine has "thrown" on two occasions. Heck of a place for the main breaker, anyway is it something...

[taltexan]

Propane is 3.20 for home delivery in Northeast Texas.

[taltexan]

I am having problems with porosity in welds. The flowmeter has condensation on the outside of meter. I have checked the plastic cone on meter and found moisture inside also. I have two different Miller 252 running gas shielded flux core wire (.045) with 75-25 gas. They both are having the same problem....

[taltexan]

I have been told if air plasma is used a nitrate build-up on the cut edge with cause weld problems (brittle,,stress cracks) on the finished part.....I have been told if you grind the weld area on cut part that there would be no problem. Have any of you experience this problem. I just bought a table...

[taltexan]

I cant say as to the experience of the tech that read the film. The report stated porosity in weld. Pictures arent really good and clear but all of the "spots" in the film are all shaped in a circular fashion.
I could see the root in the test pipe and everything looked good.
...

[taltexan]

porosity

Here are pictures of xrays .....

[taltexan]

porosity

Thanks Guys,
Appreciate all your input. I have a little more info..

Just got back from viewing the xrays. Porosity scattered throughout weld. I counted 10. Porosity was not grouped but singles here and there mostly in the center of the weld. I try to keep...

[taltexan]

I tested on 2" pipe using 6010 stringer and hot pass with 7018 cap. Test failed from porosity in weld. Approx. 12 to 14 inclusions in entire weld. I used an unopened box of rods I had bought approx. 8 month ago. This was a plastic container with tape to close.
Going back to retest and...