(04-12-2012, 12:19 PM)EdAK Wrote:(04-06-2012, 11:08 PM)Highpower Wrote: Purge the gas line for 2 - 3 seconds before you start your first bead only. (No wire feed.)
So how does one purge without feeding wire? I really don't want to have to unload the wire from the gun every time I start up the welder just to purge the line. My welder doesn't allow for purging without feeding the wire.
Thanks,
Ed
Actually I think it may actually turn the gas on before it feeds wire. At least mine does. That way the shielding gas has 'set up' around the area to be welded before the arc is struck. On mine I can define the time the gas is on before the wire feeds and the current flows. It also does the same at the end of the weld to ensure the weld is surrounded be gas as it cools ... assuming I remember to leave the gun in place over the end of the weld.
Knowing this I can purge the line by either pulling the trigger and releasing it as soon as I see the wire move a few times ... done if I have used it recently ... or the other way is to simply turn the wire speed down as far as it will go and purge it for 10 seconds or so and simply cut off the wire if it has been a long time since I last used it.
Arvid