Miller Electric

Welding Discussion Forums

Home » Resources » Communities » Welding Discussion Forums

The forum is currently undergoing maintenance and is in a 'read-only' mode for the time being. Sorry for the inconvenience.


  • If this is your first visit, be sure to check out the FAQ by clicking the link above. You may have to register before you can post: click the register link above to proceed. To start viewing messages, select the forum that you want to visit from the selection below.

Announcement

Announcement Module
Collapse
No announcement yet.

Intermitent wire feeder Millermatic 130

Page Title Module
Move Remove Collapse
X
Conversation Detail Module
Collapse
  • Filter
  • Time
  • Show
Clear All
new posts

  • Intermitent wire feeder Millermatic 130

    I purchased this used machine about a month ago and suspect this may be why it was sold. I think it is a 1994. Has GA17C gun. Came with .030 gas wire. I changed it over to .023 solid wire with bottle. As the title says the feed is not reliable. I am welding auto patch panels with lots of spots and some seam welding. When wire feeds machine works great. I have googled this problem and searched the forums. I also talked to a tech today. Welder has an almost new appearance-little used ? .023 wire feeds through gun with very little effort. I checked the reohstat with an ohm meter-.2-17 ohms. Measured voltage at motor-when the motor starts voltage ramps up to 11volts on the lowest speed setting. Holding the drive wheel with two fingers for a load when the wheel does not turn the voltage on the motor is .52 volts. let go of wheel and motor ramps up normally. I removed the drive assembly and tested the motor with a model train controller and motor runs fine through the speed range, draws about .5 amp and starts at about 3 volts and is unstoppable. Inspected gear reduction, full of grease but none on gears. regreased the gears and reassemble to machine and no change. Service tech thinks it might be the optocoupler on the pc board any other ideas ?? Thanks, Rick.

  • #2
    A couple things come to mind...

    1. Did you flip the drive wheel when you changed from 0.030 to 0.023 wire?

    2. Does the wire drive just stutter when trying to weld, or does it stop driving, altogether?

    Once these questions are answered, we can move to further troubleshooting.
    Last edited by Goodhand; 02-04-2013, 09:52 PM.

    Comment


    • #3
      Thanks, Yes the drive wheel is installed for the .023 wire. With no load on the motor it starts everytime. With the tensioner set just enough so the drive wheel does not slip the wire feed becomes intermittent. I measured the voltage on the motor with and without striking an arc. No difference.

      Comment


      • #4
        I should have said No stuttering at all, just does not start rotating. With a slight load, two fingers, it becomes intermittent which I think is do to the low voltage to the motor. .5 volt.

        Comment


        • #5
          In case you don't have a manual for your machine... take a look at the troubleshooting section.

          http://www.millerwelds.com/om/o1309a_mil.pdf

          Comment

          Working...
          X
          Special Offers: See the latest Miller deals and promotions.