TIG torch switch help please?

[Seaco]

Hi All

I have an R-Tech TIG setup, I have changed the torch that came with it a WP26 for a water cooled WP20 and I'm very pleased I did but it didn't come with any switch on the torch I have bought one (see images) but I'm no electrician and have no idea which of the three connectors to use. I contacted R-Tech and got the correct plug connector for the welder and was told it's just two wires that go in either order to number 1 and 2 on the plug but the torch switch has three connectors and I don't know which to use?

Any help really appreciated

Lee

 

[Paul.]

you just need to identify which terminals are closed with the button pressed, easy if you have a meter, but almost certainly no.1 will be the common, and microswitches are usually normally open 1 to 3*, so connect to 1 and 3 and plug it in, if it triggers without pressing the button swap it to 1 and 2, you wont do any damage if its wrong.

* chinese looking switch so may not follow convention

 

[Seaco]

Thanks Paul did as you said and all up and running... It was 1 & 2

Lee