plasmacutter air leak...

[migmaniac70]

A friend of mine has a Spectrum 375 and when it is being used air comes out from around the bottom of the cup.
Is it supposed to be doing this?

[lramberson]

Have him check his o ring in the tip assembly , this is probably damaged or worn. The only air exit is at the end of the tip when unit is operating..

[migmaniac70]

Yeah i checked the o ring it was fine,I replaced it anyway,
What are the little holes around the bottom of where the cup screws on for?(just curious)
See attachment

[lramberson]

The cup with holes in it is called the swirl ring, I am not the engineer but the plasma arc requires little jets of air to help create the ionazation with electricty It swirls the air before the juice is applied and presto plasma acc.. I wish it was that easy Lets jus t stick that it swirls the air to help with ionazation.(and cooling of torch head)

[migmaniac70]

I added an attachment to my previous post to show what holes i am talking about.

[lramberson]

Sorry... cooling