I just purchased an Airco Bumblebee 250a AC/DC [MA] machine. Looks great, never abused. It was owned by Florida State University mail room department for shop repairs. The guy said it was rarely used and it looks like it!! I also got 50' leads with it and they are in excellent condition.
What I need to know is exactly which Miller model this crosses too. Another thread posted about this type welder showed that one to cross to a Miller DialArc 250.
I am sure mine is a Miller DialArc 250 but not completely sure which one. My machine is not a Bumblebee II [MSM], which is the case in most of the posts I found here.
Mine is a Bumblebee [MA].
Serial# HG050397
Stock # 1341-0266
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07-04-2011, 12:28 PM #1
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Another Airco Bumblebee [MA] machine
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07-04-2011, 01:00 PM #2
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from your serial number and pic.... looks like a 1976 model... here is a link to the manual that corresponds.. hope this helps...
http://www.millerwelds.com/om/o314c_mil.pdf
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07-04-2011, 01:16 PM #3
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Thank You!!
Can you also tell me what the [MA] versus [MSM] designation means?
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07-04-2011, 01:36 PM #4
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fraid that I do not know the answer to that.... perhaps "Cruizer" will see this thread and help us out..... he is a very knowledgable welder repair tech...
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07-04-2011, 01:58 PM #5
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Just a guess
just guessing..... but since your machine is a Magnetic Amp machine.... maybe it is Magnetic Amp (MA) vs Moveable Shunt Machine (MSM) for amp control where a section of the transformer core is slid in and out to regulate current...
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07-04-2011, 02:47 PM #6
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That's it! Thanks!
Originally Posted by H80N
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07-05-2011, 06:28 AM #7
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That machine sure looks new, nice find!
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07-05-2011, 06:37 PM #8
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It still had the paper tag, I guess a consumer warning label, attached to the side panel.
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07-05-2011, 08:05 PM #9
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MA, is the old way of saying *** Metal Arc*** welding
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07-05-2011, 08:13 PM #10
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Cruizer
thanks for helping out.... guesses usually get me in trouble.. even ones that sound so logical.....
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