Powermax30 shuts off while cutting
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  1. #1
    Join Date
    May 2015
    Location
    Hills of North Georgia
    Posts
    60

    Powermax30 shuts off while cutting

    I have a powermax30 that's about 4 years old and has been absolutely flawless until yesterday. I turned it on and cut about an inch into a picec of 1/4" plate and the machine shut off just like you flipped the switch. I turned the switch off and back on and nothing. I could wait about 10 minutes and turn it on and be able to cut another inch and it would shut down again. When I say it shuts off, I mean it's just like you pulled the plug. Any ideas at all?

  2. #2
    Join Date
    Oct 2007
    Location
    New Hampshire
    Posts
    3,208

    Re: Powermax30 shuts off while cutting

    Well....that has never happened to me, however if you contact tech service I am very positive they will steer you right to it. technical.service@hypertherm.com or 1 800 643 9878 .

    My bet is with the torch "parts in place" switch. This switch (inside the torch) shuts the power supply off when you remove the consumables as a safety feature. If you have severely worn consumables....or consumables not manufactured by Hypertherm this switch can randomly shut the unit off. The switch also could be worn and not activating adequately. Either way, tech service can direct you to resolving it. Jim Colt Hypertherm

    Quote Originally Posted by LMREESE View Post
    I have a powermax30 that's about 4 years old and has been absolutely flawless until yesterday. I turned it on and cut about an inch into a picec of 1/4" plate and the machine shut off just like you flipped the switch. I turned the switch off and back on and nothing. I could wait about 10 minutes and turn it on and be able to cut another inch and it would shut down again. When I say it shuts off, I mean it's just like you pulled the plug. Any ideas at all?

  3. #3
    Join Date
    May 2008
    Location
    Orange, TX
    Posts
    16,528

    Re: Powermax30 shuts off while cutting

    You pick the order but I'd also check the connections at the receptacle it's plugged into, the receptacle itself, the power cord plug/connections to see if they're loosing contact under load. There's been more than one occasion that a loose connection has wreaked havoc with machines of all sorts.

    If Jim's suggestions come up empty I'd check the main power switch to see if it's contacts are loosing conductivity under load by connecting a VOM to the load side using alligator clip test leads or method of your choice so you can see immediate results as soon as the unit shuts off.
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  4. #4
    Join Date
    Jul 2016
    Location
    Midwest
    Posts
    149

    Re: Powermax30 shuts off while cutting

    I had a similar issue with a mig welder and it turned out that the thermal over temp ( duty cycle ) sensor was failing.

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