Miller plasma fault light problem
Close
Login to Your Account
Results 1 to 8 of 8
  1. #1
    Join Date
    Jul 2004
    Location
    N. GA- 33.992N , -83.72W usa
    Posts
    3,940
    Post Thanks / Like
    Likes (Given)
    84
    Likes (Received)
    931

    Default Miller plasma fault light problem

    i have a spectrum 625 plasma machine that is giving a Temp fault light . when i turn the machine on
    from cold @ around 55 deg - the air and cup lights go out , but the temp light stays lit and the thing won't
    start . if i leave it idling long enough , the light will go out and i can get it to spray for about 2 seconds before it quits and the temp faults again.

    i haven't used the machine in about a year - are there relays, contactors or sensors i should inspect
    when i pull the covers ? i have the miller schematic, but it is more of ageneral wiring diagram and
    of little help to me.

  2. #2
    Join Date
    Oct 2017
    Country
    UNITED STATES
    State/Province
    California
    Posts
    1,246
    Post Thanks / Like
    Likes (Given)
    381
    Likes (Received)
    427

    Default

    It probably has a mechanical thermal switch somewhere in there that could use replacing. Think of where it would get hot and look for a little thing with two wires. Could be a metal can, could be a little tube, could be bolted to a transformer or heatsink or in the airflow.

  3. #3
    Join Date
    Nov 2019
    Country
    CANADA
    State/Province
    Ontario
    Posts
    534
    Post Thanks / Like
    Likes (Given)
    805
    Likes (Received)
    126

    Default

    if its like a hypertherm, they do that when the contact tip gets worn out and it will prevent it from starting. it protects the cable that way.

  4. #4
    Join Date
    Jul 2004
    Location
    N. GA- 33.992N , -83.72W usa
    Posts
    3,940
    Post Thanks / Like
    Likes (Given)
    84
    Likes (Received)
    931

    Default

    new cup, cone, swirl and tip. cable tests good for continuity.

  5. #5
    Join Date
    Nov 2019
    Country
    CANADA
    State/Province
    Ontario
    Posts
    534
    Post Thanks / Like
    Likes (Given)
    805
    Likes (Received)
    126

    Default

    ya could be anything electrical internally. failures happen easier when colder. need someone good with electronics to test all the circuits related to it.

  6. #6
    Join Date
    Jul 2004
    Location
    N. GA- 33.992N , -83.72W usa
    Posts
    3,940
    Post Thanks / Like
    Likes (Given)
    84
    Likes (Received)
    931

    Default

    it works fine now..... repair procedure #2 ........ i just left it on for 5 days straight..
    . now it powers up and cuts like a champ. must have been damp in there.

  7. #7
    Join Date
    Oct 2005
    Country
    UNITED STATES
    State/Province
    Pennsylvania
    Posts
    21,213
    Post Thanks / Like

    Default

    Quote Originally Posted by tnmgcarbide View Post
    it works fine now..... repair procedure #2 ........ i just left it on for 5 days straight..
    . now it powers up and cuts like a champ. must have been damp in there.
    did you dust it out with compressed air ?

  8. #8
    Join Date
    Jul 2004
    Location
    N. GA- 33.992N , -83.72W usa
    Posts
    3,940
    Post Thanks / Like
    Likes (Given)
    84
    Likes (Received)
    931

    Default

    many times... but removing the panels, it was spotless in there. no grit, dust mites or cobwebs.

  9. Likes digger doug liked this post

Tags for this Thread

Bookmarks

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •