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Lincoln Powermig 350MP welds for a short time and then stops with a fault code 81 ,which does not appear in the owners manual

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Hi:

Code 81 mean an overload to the system, this problem occurs when the wire is not running freely from drive rolls to the contact tip. To avoid this problem do the following troubleshoot.

1) Make sure you have the right size and type of drive rolls for the wire you are using. P.e. if you are using steel core wire (gas use) you need U-grooved type, if flux core wire then you need knurled type.

2) Check your tension at the idle roll pressure setting, this one must be 3-4 if using metal or flux cored wires. Less for aluminum and more for S.S.

3) Check your liner if there is any kink on it, change it.

4) Change your contact tip if needed.

5) Check the tension on your wire spool holder, this one also must run not so freely but free enough to avoid wire nesting.

Hope this help.

If this was useful to you please vote. Thanks.
Your wire must run smoothly

Posted on Mar 23, 2011

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