[TheForge] Trouble shooting welder

[Ralph Sproul]

	Hi Don, When is the last time you changed the liner in the gun?   When you
pull the contact tip out - is there metal filings behind it?.......good
indicator of a worn liner.    This is all presuming that the wire moves when
not welding - if it's jambed in the contact tip, or the feed tube in the
feeder itself - those usually cause it to run at uneven speeds.  Change them
out if they do.
	Also - is the wire roll been sitting a while since last used?  If there is
a layer of rust on the outside wrap of wire - that can raise hell with feed
rolls, liners, contact tips, etc.

	That's starting with the simple options.........

Ralph

-----Original Message-----
From: theforge-bounces at mailman.qth.net
[mailto:theforge-bounces at mailman.qth.net]On Behalf Of PlumDon at aol.com
Sent: Wednesday, January 11, 2006 2:00 PM
To: theforge at mailman.qth.net
Subject: [TheForge] Trouble shooting welder


Hoping for some advice on a problem with my very old, much used Hobart 250
mig welder. Whenever I pull the trigger the wire burns right up to the
nozzle
with a flash of blue light. I have tried making sure I have a good ground
and
filed clean the copper grounding clamps. But that didn't help.

Kindest thanks for any suggestions.

Don Plummer
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