20 Most Recent Hobart Airforce 250ci Light Weight Plasma Cutter With Air Compressor #500534 Questions & Answers

Maybe blew a fuse . maybe malfuncttion. i would contact company for proper assistance. Customer Service Hobart Welders

Possibly an internal short in the torch tip... the expendable components failing in the tip will cause the sensors in the machine to register a "no cut" or "free air arc" state and kill the power to the tip to prevent damage to the unit. Replace the tip components and double check the grounds connections.

bad ground?

check the cable going into it,then the nozle i think the unit has a breaker type switch ? push it all the way down then back up again

I feel that the unit is defective. Being brand new it is not even coming on, definitely indicates so. can it be returned and replaced with another one? I would suggest that. As even if you are able to get it moving, it has already put you to troube.

miller web site they have everything

Sounds like you have more than one problem. Check all fuses. Bringing it to a welder repair shop might be a good idea. Welding suppy houses may be able to help you in your area, and maybe recommend someone.

If the wire feed on your Hobart 251 MIG welder won't stop when you turn it on, there could be a few possible causes. Here are a few things to check:

1. Check the trigger on the MIG gun: Make sure that the trigger on the MIG gun is not stuck or damaged. If the trigger is stuck in the "on" position, it will cause the wire to continuously feed.
2. Check the wire feed motor: The wire feed motor could be faulty or jammed, causing the wire to feed continuously. Try disconnecting the wire feed motor from the welder and see if the wire still feeds. If it does not, then the motor is likely the problem.
3. Check the wire spool: Make sure that the wire spool is installed correctly and is not jammed or tangled. If the wire is not feeding smoothly from the spool, it could cause the wire to feed continuously.
4. Check the wire feed control settings: Ensure that the wire feed control settings are set correctly. If the wire feed speed is set too high, it could cause the wire to feed continuously.

If none of these solutions resolve the issue, it may be best to contact a qualified technician or the manufacturer for further assistance.

This could be a PWM issue with the controller or the pinch rollers for the feed are worn or slipping,

check the brushes on the generator motor

check for correct tension on wire at feed

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