![]() Im stuck with an electrically live blow gun. Now the center conductor is electrically isolated from the tip and the cutter does not sense a short (connection between the conductor and the tip) so it never tells the main transformer to turn on, click click click.nothing. Once the air starts flowing this new torch has a 'floating' center conductor that is physically blown back off the tip (breaking contact) due to the air forcing its way around it out the little kerf hole at the end. I can't explain how the original torch (High frequency start, pilot arc, scratch start, lift start?) worked as I have yet to see one, but this machine starts the air flowing first with the torch trigger to protect the original torch tip I presume. I found that the 'blowback' torch design that the PO tried to replace the original torch head with ("sure its compatible", said the salesman.) is ***-backwards in the way it strikes an arc compared to the original torch. Talk about no factory support, this is an orphan. Huge props to "Toplscuda" Carl for guiding me through some troubleshooting tips on this antique. Marquette M12150 mystery solved.I got the wrong torch head! But can I make it work.?
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