Broke my ThermalArc Fabricator 131?

Was welding tonight, nothing heavy, 1/8 & 1/4" round stock.

Half an hour into my project I stuck the wire to the tip.

Undid the ground, tapped the tip on my welding table and pulled the trigger a few times, no luck getting it unstuck.

Turned welder off, cut the wire @ the feed roller, decided to put a new tip on.

Turned welder on, hand fed wire a bit, now I just get a click when I pull the trigger, no wire feed, no gas.

Not sure if arc is still being transmitted or if it's just the wire/gas feed that's not working.

Any thoughts?

Thanks

-Tom

Reply to
TT
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--Open up the switch assembly and see if a wire's come loose, I know this is a constant problem with my Thermal Arc plasma torch..

Reply to
steamer

I don't know your machine in particular but here is what I do when things go wrong. The click is something that is working. Usually that sound is the gas solenoid opening when you pull the trigger. With your gas cylinder valve open check that you are getting shielding gas out the diffuser. Because your problem is not wire feed I would guess you are going to feel gas coming out. The click sound also indicates that you have something working OK at the gun trigger so I would not bother checking the trigger switch. Often on feeders there is a fuse to protect the motor. It will be likely be a relatively small glass Buss style fuse readily accessible. It is always a good idea to have a spare taped to the inside cover of your feeder. If you have a manual feed switch that advances wire without you having to pull the trigger this should be tried. If the motor does not move with trigger switch or wire advancing switch and you have changed the fuse, there is a real problem that needs the attention of a technician. If you are handy with a meter you could hot wire the motor directly to see if you have a control problem or motor problem. Be careful because some motors run on 110 volt AC and others run off lower voltages such a 12 DC. You can also check to see if your contactor relay is working. On some machines it is audible. On others it can't be heard over the click of the gas solenoid. Put your meter on volts on a range over 30 volts. Select DC current. Connect your leads between ground and your power strap leading to the gun or between the contact tube of the gun and ground. When you pull the trigger you should see voltage. If your machine has a voltmeter installed you would see this response on the panel. I had a feed problem on my machine today. I eliminated a lot of stuff by pulling the trigger and looking at the digital readout on my boom. I had not response so wiggled the gun connection to the feeder and I was back in business. Some of these problems and tactics are not directly related to your problem but might remove future obstacles to running your machine. Tell us the resolution to your problem so that we all can learn. Randy

"TT" wrote in message news:6Ok5f.5976$OM4.1905@dukeread06... Was welding tonight, nothing heavy, 1/8 & 1/4" round stock.

Half an hour into my project I stuck the wire to the tip.

Undid the ground, tapped the tip on my welding table and pulled the trigger a few times, no luck getting it unstuck.

Turned welder off, cut the wire @ the feed roller, decided to put a new tip on.

Turned welder on, hand fed wire a bit, now I just get a click when I pull the trigger, no wire feed, no gas.

Not sure if arc is still being transmitted or if it's just the wire/gas feed that's not working.

Any thoughts?

Thanks

-Tom

Reply to
R. Zimmerman

I had the case open.

The click is coming from a magnetic coil switch on the circuit board that fires when the gun trigger is pulled. There is no gas flow and no wire feed.

Everything inside looks ok, nothing looks or smells burned. There is a 3A fuse that I tested with a fuse tester and it checks out ok. I didn't see any other fuses.

The cooling fan runs.

I can't find my Fluke 83 at the moment! so I'm stuck at this point.

Will report on findings.

-Tom

Reply to
TT

sounds like a great time to read the manual, find the Fluke 83 and follow the schematic. I fixed my HF arc starter using this method, the other day.

i

Reply to
Ignoramus27736

Main relay could be bad. They cost about $50 to replace.

If your machine is a multi-tap transformer type, make sure the power setting is on a number and not between 2 numbers.

The worst case scenario is the power diodes. More like $100 to replace.

Reply to
Ernie Leimkuhler

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