question on repairing Miller syncrowave 250

[macona]

That ought to do the trick. Though it is awfully small. Half the rated output of your machine.

[Damic]

Originally Posted by macona

That ought to do the trick. Though it is awfully small. Half the rated output of your machine.

Near as I can tell a 150 amp torch is the most powerful one I could get without going to a water cooled unit.
I want to eventually get a W/C unit but without someone donating the cooling unit the A/C unit will at least get it running.

[coollx]

What some people are doing that works is to connect a water cooled torch to a nearby cold water faucet with the drain line running back to a sink. IMO, assuming you have a faucet and sink nearby, its a better way to get started since you won't waste money on a aircooled torch that you will probably replace. Might be worth looking into.

[gnm109]

Originally Posted by coollx

What some people are doing that works is to connect a water cooled torch to a nearby cold water faucet with the drain line running back to a sink. IMO, assuming you have a faucet and sink nearby, its a better way to get started since you won't waste money on a aircooled torch that you will probably replace. Might be worth looking into.

That's an excellent method if you have a nearby sink. The welding schools that I attended used tap water with sinks for their machines. It's a very low maintenance method and the water is always cool.

If you do that, it might be a good thing to have a water solenoid installed. In my Miller SW200, there is no water solenoid. I don't have a sink anyway so I use a water cooler. The pump is plugged into the face of the welder and comes on when the TIG welder is turned on and runs while the machine is being used. When I stick weld, which is seldom, I merely unplug the cooler pump from the front of the machine after changing to the stick welding cable. Without a water solenoid, you would have to remember to turn the water on each time you weld, however. Otherwise the torch would burn up.

You would also need a DINSE adapter for the Miller gas/power port. Since there is no water connection on the machine, I had to get an adapter that bypasses the gas and return water.

[Rustybolt]

My.02
For years I used a "Little Giant" pump in a plastic cooler. Worked well for me and an inexpensive alternative.

[macona]

You can get a 26 series torch that is rated to 200 amps.

To cool a water cooled torch properly you need about 40 to 60 PSi to get the right flow rate. Less and you risk taking out the power cable or get an overly warm torch.

[bobhdus]

We looked at trading in our 12 yr old SW250 and found that the Miller DX200 is smaller and lighter, able to match all the features and better and is around $3400 with our trade-in. It also has the smart dual voltage to automatically know what voltage we are using, is a truer square wave and does SMAW, GTAW and does not need HF to start. They are giving us $600 for our old SW250 which is pretty beat up. Hate to sound like a commercial, but sometimes free is not always free and you may be better off to trade in for a new or used welder that works. If your anything like me, anything I gotta fix for myself gets put on the back burner until I am done with everyone else's stuff and there is never a shortage of everyone else's stuff.

[macona]

But if you need the power its just not there with a Dynasty 200. Dynasty 200 maxes out at 200 amps, period. The synchrowave will go up to 305 amps.

The Dynasty 200 is a great machine, but the true replacement for a Synchrowave 250 would be a Dynasty 300 (If it was still made) and now a Dynasty 350. An there you are looking at ~$6500.

[coollx]

Actually the Syncrowave 250 tops out at 310 amps