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  1. #1
    Join Date
    Oct 2013
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    3

    Default Running a 211 Millermatic off of a generator

    Hey guys, new to the forum and looking for some help. I purchased a 211 3 years ago and love the machine. I bought a new place and trying to do some light welding on a gate. No power at the gate location so I fired up a portable generator to power the 211. The welder runs but won't advance wire or arc. With house power welder works fine. Generator voltage comes in at 140v. Any ideas on what's going on? Just need to weld a couple of tabs on the gate posts before I have shoulder surgery. Thanks Larry

  2. #2
    Join Date
    Dec 2007
    Location
    Los Angeles
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    2,860

    Default

    You didn't state what size generator
    Ed Conley
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  3. #3
    Join Date
    Oct 2013
    Posts
    3

    Default

    Sorry, it's a 3500 watt 120v. Larry

  4. #4
    Join Date
    Dec 2007
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    Los Angeles
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    2,860

    Default

    Check to make sure that the switch on the front is set for the regular mig gun and not the Spoolgun.
    Ed Conley
    http://www.screamingbroccoli.net/
    MM252
    MM211
    Passport Plus w/Spool Gun
    TA185
    Miller 125c Plasma 120v
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    SO 2020 Bender
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  5. #5
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    Dec 2007
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    Los Angeles
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    Default

    Quote Originally Posted by High2 View Post
    Sorry, it's a 3500 watt 120v. Larry
    That should be enough power but your 140v at the receptacle is really high
    Ed Conley
    http://www.screamingbroccoli.net/
    MM252
    MM211
    Passport Plus w/Spool Gun
    TA185
    Miller 125c Plasma 120v
    O/A set
    SO 2020 Bender
    You can call me Bacchus

  6. #6
    Join Date
    Oct 2006
    Location
    Illinois
    Posts
    600

    Default

    From reading posts on using generators with welding machines it must be ran on high idle at all times .

    Looking in the manual you need at least a 20 amp circuit with 110 volt plug. Is yours a 20 amp ?

  7. #7
    Join Date
    Nov 2012
    Location
    Northern Arizona
    Posts
    479

    Default

    110vac x 20amp = 2200 watts. Should be good to run on the 110vac side which would be fine for 1/8" steel no problem. Did you try again in the shop or idle the genny up to make sure it was ready to go? Also probe the generator output to verify voltage and ac frequency?
    MillerMatic 251
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  8. #8
    Join Date
    Feb 2012
    Posts
    226

    Default

    Quote Originally Posted by Broccoli1 View Post
    That should be enough power but your 140v at the receptacle is really high
    Voltage is to high at 140.

  9. #9
    Join Date
    Oct 2013
    Posts
    3

    Default

    I've tried everything that I can think of. Like I said the welder runs but won't advance wire when the trigger is pulled. Unplug and connect to shore power, everything is fine. The 140v is too high, maybe a built in safety in the welders circuitry. Larry

  10. #10
    Join Date
    Dec 2007
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    Los Angeles
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    2,860

    Default

    Did you check the Gun selector switch ?
    Ed Conley
    http://www.screamingbroccoli.net/
    MM252
    MM211
    Passport Plus w/Spool Gun
    TA185
    Miller 125c Plasma 120v
    O/A set
    SO 2020 Bender
    You can call me Bacchus

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