torch connections

[dutchman]

Grrrr, after waiting more than four weeks I finally received my new TIG torch, but the eggheads mounted the wrong connections.
The powertransfer on my welder goes through a 5/8 UNF connection through which the argon also flows. They mounted an extra dinze connection for the powertransfer. I guess this will not work will it?
BTW, does anyone know whether the dinze connection on my machine, which isn’t used when tigging, is “hot”? Or is there no power on it, and thereby making the delivered torch completely useless.

 

[shenion]

Normally the TIG and arc connectors are connected together internally. Otherwise they would need to add a switch/relay that can handle the full output current.

You should be able to test with a meter.

 

[dutchman]

They are connected. I only measure a resistance of 0.6 Ohm between the 5/8UNF gas connection and the minus dinze connection.
Now I only have to get me the proper plug for the control connection. They didn’t follow the specs there either.
What I don’t understand though is why my eurthleak breaker pops when I loosen the minus dinze connection while the welder is switched off (but plugged in off course).

 

[shenion]

I would think the gas would be connected to the + terminal. DCEN will be hard in the tungsten.

 

[dutchman]

Are you sure about that?
I thought DC Tig is usually EN and arcwelding elektrode positive.

 

[dutchman]

The people I bought a Tig torch from say that it is impossible to have a separate gas connection that provides current as well.
I measured it and it definitely is live and connected to the mass dinse connection.
They blame this on an internal fault in the welder. I am talking about a Lincoln Invertec V200 Tig.
I don’t really believe those guys and Shenion already commented that it is not unusual. Can anyone tell me whether this construction is common in Europe?

 

[dutchman]

Here is a picture.
The second connector from the left (where the hose goes in) is connected to the dinse connection next to it (on the far left).
Looks pretty standard to me..

 

[shenion]

Most Chinese TIGs are set up that way also.

You said the torch came with a Dinse connector. Cant you just connect it to the - terminal and adapt the gas line?

 

[dutchman]

Thanks Shenion

I already fixed it, but I wanted to know whether they were pulling my leg. If so, I don't do business with them again.
A simple sorry from them would have done the trick, but telling BS doesn't.

 

[shenion]

The Invertec's are popular here. It is not like you has some off-brand junk.

Lincolns are sold worldwide. If they don't understand how to connect one up, then they are idiots to feed you BS.