Rtech TIG401, Operation Instructions Manual

13

 
The machine will now decrease output to finish (min) current in time set by slope-down, 
once at finish (min) current the machine will stop output and the gas valve will continue to 
operate for the selected time (post flow) 
 
Possible variations of this standard sequence are shown in diagram below. It is possible to 
press and hold tig torch switch a second time during down slope time to restart. After the 
switch is pressed the output current will raise to base (main) current 
 

 
 
When the trigger mode is in the 4 step position the following sequence will occur 
 

Press and hold the tig torch switch to start sequence. 
 
The machine will open gas valve to start flow of shield gas, after a 0.5 seconds pre-flow 
time to purge air from torch hose the welding output of machine will be turned on and the 
arc will be started. After the arc is started the output current will be at start (min) current 
 
This condition can be maintained as long as required. 
 
Release the tig torch switch to go to step 2 
 
The machine will now increase output to base (main) current in time set by slope-up. 
 
Press and hold the tig torch switch when main weld is complete 
 
The machine will now decrease the welding output current to finish (min) in down-slope 
time set. Once at finish (min) output you can release the Tig torch switch to end weld the 
gas post-flow will continue to run for set time. 
 

14. 

Arc force (Stick – SMAW only)

This provides better arc starting when in MMA stick mode, useful when you are welding 
dirty/rusty material or cold/damp welding electrodes