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Anybody have a Miller 875?

Discussion forum for Lincoln & Miller plasma cutters
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Joined: Wed Jan 29, 2014 6:01 pm

Anybody have a Miller 875?

Postby kd7bpk » Thu Nov 12, 2015 6:44 pm

Just wondering if anyone else has a miller spectrum 875 plasma mine will pierce and cut just a little then shut off and the pressure light is blinking I've tried eliminating all clogged filters and such and still does it driving me crazy!
Any ideas?

Posts: 201
Joined: Sun Apr 20, 2014 9:38 am

Re: Anybody have a Miller 875?

Postby btburn » Sun Nov 15, 2015 9:42 pm

I had one, it was a little more heavy duty than my hypertherm. The only problem I ever had was the arc transfer signal and sometimes would shut it down. Are you using a hand or machine torch? If you need a machine torch for it let me know.
It sounds like an air supply issue but possibly something clogged internally. Do you have a pressure gauge at the rear input? That would tell you if the air supply was sufficient entering the machine. Maybe a faulty air pressure switch? Does it cut fine by hand?
Dynatorch 4x4 SuperBee, Powermax 65, Quincy QT-54, Snap On MM250SL, Thermal Arc Arcmaster 185, Corel Draw X7 and a messy garage.

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