Results 1 to 7 of 7

Thread: HF UNO MIG Question

  1. #1
    Join Date
    Jun 2011
    Posts
    1
    Post Thanks / Like

    HF UNO MIG Question

    I have an old HF mig welder that I bought in early '90s. It is a UNO Mig model. I used it to weld 1/8" aluminum plates (argon gas, .035 alum wire) in shelves for scientific equipment. I disassembled and cleaned it last year (it was underwater for 18 hours in a flood) and replaced all electrical connectors and now everything looks good. My question to the experts here is can I run .030 Lincoln steel flux wire in this welder? I still have the original 'owners manual' but typical of early HF manuals, it is almost useless and looks like it was copied on a bad copier and stapled together. An unrelated afterthought is that this welder actually did run some decent aluminum beads and I still have one of the old shelves and I'll post a picture next time.

  2. #2
    Join Date
    Nov 2008
    Posts
    195
    Post Thanks / Like

    Re: HF UNO MIG Question

    if youve been able to weld aluminum with it you you should have no problems going to flux core. just change polarity to from DCEP to DCEN and check to see if you should flip the wire feed wheel around since you are going from .35 to .30 wire.

    i tried some alu mig welding with my 151. boy was it difficult.
    if anyone was unwilling to work, neither should that one eat - 2 Thessalonians 3:10

  3. #3
    Join Date
    Jun 2010
    Location
    Barrington, IL
    Posts
    66
    Post Thanks / Like

    Re: HF UNO MIG Question

    I would have to agree. It's as simple as changing the polarity. Also, I wanted to ask if you could take some pictures of your unit and post them. What's the part number of your welder? Thanks.
    Chicago Electric 131 Dual MIG Welder 120V
    http://www.gr8lakeinnovations.com
    2x Associates of Automotive Technology: Transmission Technician & Under Car Technician
    Associates of Electrical Engineering Technology

  4. #4
    Join Date
    May 2009
    Location
    Wyoming US
    Posts
    3,261
    Post Thanks / Like

    Re: HF UNO MIG Question

    It has been a long while ,so my memory may not be correct.
    If it is a 20000 series it may a different critter than the 50000 series.
    There was a Uno Mig series in about the late 80s that was made in Italy.
    I think there was a Uno Mig series made in the late 90s that was a 100amp model,that was almost the same as the 100a models that they sell now.
    What is the amp rating of the one you have ?

  5. #5
    Join Date
    Feb 2011
    Posts
    2
    Post Thanks / Like

    Re: HF UNO MIG Question

    I've just sold my UNO MIG after 32-years of faithful use. Upgraded to TIG.
    About 20-years ago, I upgraded output with large capacitor, really smoothed out arc and gave nice smooth sizzle.
    Then 10-years ago, speed-controller board died. I replaced it with digital PWM controller. Much better control at lower speeds and more torque too.

    Anyway, here's manual I scanned for everyone's use. Covers: Easy MIG, MIG-I, MIG-II / UNO MIG, Dual MIG-120, CEMIG 140T, 160T and 170T
    https://drive.google.com/file/d/1gbT...ew?usp=sharing

  6. Likes California liked this post
  7. #6
    Join Date
    Mar 2018
    Location
    Clovis California
    Posts
    3,436
    Post Thanks / Like

    Re: HF UNO MIG Question

    The company on last page website is https://www.unitrainc.com

    Dave

    Quote Originally Posted by dannoxyz View Post
    I've just sold my UNO MIG after 32-years of faithful use. Upgraded to TIG.
    About 20-years ago, I upgraded output with large capacitor, really smoothed out arc and gave nice smooth sizzle.
    Then 10-years ago, speed-controller board died. I replaced it with digital PWM controller. Much better control at lower speeds and more torque too.

    Anyway, here's manual I scanned for everyone's use. Covers: Easy MIG, MIG-I, MIG-II / UNO MIG, Dual MIG-120, CEMIG 140T, 160T and 170T
    https://drive.google.com/file/d/1gbT...ew?usp=sharing

  8. #7
    Join Date
    Dec 2016
    Posts
    313
    Post Thanks / Like

    Re: HF UNO MIG Question

    those instructions are not all that bad compared to what is supplied with their chicom machines!

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •  
Page generated in 1,638,023,810.76132 seconds with 14 queries