On Thu, 06 May 2004 12:38:55 GMT, "Karl Townsend"
wrote:
Harold wrote:

(cost me exactly $20.00) I was able to supply the welder with constant
60 PSI of pressure. I run another hose with fitting into the drain.
The water solenoid inside the welder works great. Not too worried about
wasting

Run the hose out the window, and let the water dribble on that big
shade tree near the garage. Waste not, want not.

You're one up on me. Mine failed a few weeks ago and the repair isn't done
yet. My shop freezes in the winter, or at least it can when I'm gone, so I
need antifreeze solution for coolant. I bought a diaphram pump from surplus
center.

Make sure you have enough pressure to get the needed flow - the rest
of the discussions have centered around carbonator pumps, which are
gear type, to get the 60 PSI pressure needed to flow the water through
the small hoses in the torch lead.

My Lincoln IdealArc Stick/Tig doesn't have a solenoid for the water, just
the gas. This is why the first pump failed, it was left on for a week ( Nice
to have a kid around to help break things.)

You think that's bad? I now have a Dad around to break things, and
when he does it, he breaks things with /style/...

(AARGH! NO, put /down/ the WD-40 and pump pliers, and back away
slowly! Kerosene is NOT a lubricant! Don't you touch it, let me
finish this and I'll get the right tools and go fix it.)

I need to go inside the welder to
get the wire for the gas solenoid and use it to turn the coolant pump on.
Then the pump will only run when gas is called for.

I would rig it with a delay timer, so the coolant pump runs when the
gas solenoid operates, and then another 30 seconds or a minute more as
a cool-down cycle. Plus, this keeps you from short-cycling the pump
motor and killing the start windings/switch...

I don't profess to know the fine details about TIG (I do MIG) but
common sense says there has to be residual heat in the tip to get rid
of after stopping the bead, and boiling the coolant in the tip
channels can't be good for it. Do a lot of short strikes tacking
things together (with the water only running for a few seconds at a
time) and soon the tip will go all melty...

If nothing else, you'll get mineral deposits that will clog the
channels. (Just like oil coking in turbocharger center bearings.)

-- Bruce --

--
Bruce L. Bergman, Woodland Hills (Los Angeles) CA - Desktop
Electrician for Westend Electric - CA726700
5737 Kanan Rd. #359, Agoura CA 91301 (818) 889-9545
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