I found myself running into a problem and maybe someone can help me out.

When I try plasma cutting, sometimes it will cut fine and sometimes it will pilot arc and then goes out and sets off the warning light on the machine. I cannot try to plasma cut again until I shut of the machine and turn it back on.

My air pressure is good, and amperage is high enough. Torch is negative and ground is clean. I just can't seem to get it to plasma cut for longer than 3" because the warning light always comes on and sets the machine to safe mode.

Any suggestions?