ESAB DTG 405 Service Manual page 76

7.1.1 SPOT WELDING
1. Set the spot time using the potentiometer (1) between 0.1 and 10 s.
2. Set the gas post-flow time using the potentiometer (18).
3. Touch the torch key to interrupt welding process after preselected time.
Pressing the button again causes the process to be repeated.
7.1.2 TIG FOUR-STROKE WELDING
Step 1: By pressing the torch switch the ARC is ignited.
(After the pre-flow time has expired) at a current level determinated by the soft-hot-start
(ignition current) control.
Step 2: Releasing the torch button causes the current to increase to the welding current value I2
using the potentiometer Up-Slope set time.
Step 3: Pressing the torch button again and holding causes the Down-Slope to start.
The current slopes down to the set final current I3 after the time set using the potentiom-
eter Down-Slope.
Step 4: By releasing the torch button, the arc extinguishes and the gas flows for the time set on
the gas post flow control (18).
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