miller 150 stl gas flow time

[ronan]

i have a little miller 150 stl tig plant , the problem is the gas post flow goes on too long after the weld is finished wasting gas, is there any way to reduce this time or is it set at the factory ?

 

[mike os]

the post flow serves 2 purposes.... prevent contamination of the weld/hot metal until it has cooled sufficiently, and to prevent oxidation/contamination of the hot TIG tungsten. seem to remember about 5 seconds being recommended

 

[ronan]

the post flow serves 2 purposes.... prevent contamination of the weld/hot metal until it has cooled sufficiently, and to prevent oxidation/contamination of the hot TIG tungsten. seem to remember about 5 seconds being recommended

yeah i know that , but the post flow is really long 20-25 seconds , i am just wasting gas , 5-10 would be good.

 

[mike os]

looking at the manual, it must be internal..... so would void warrenty even if you can find the adjustment ( assuming it is not programmed in.)