I have a hypertherm MAX 20 ight duty plazma cutter I picked up used that does not work. When air and power or applied it lights the temp pressure light which best I can tell from the owners manual means my air pressure is regulated properly . It also passes the test switch procedure according to the manaul . But when I try to cut it makes a small arc and then stops. Consumables in tourch are used but look to be in working order as compared to other plasma cutters I have used . Can anyone tell me where I can find a schematic or a repiar manual to go along with the owners/ operation manual I already have so I can try and repair this unit.Thanks in advance.
Reply:I don't have much plasma expirience but I would try new consumables. Clean the torch tip out and make sure you have a good ground.DennisThermal Arc 185-TSWMillermatic Challenger 172VictorO/AAtlas Craftsman 12 by 24 LatheEsab PCM-875Wholesalem Tool Mill-Drill