Jasic EVO 2.0 EM-160C, Operator'S Manual

Page: 62 / 82

62
OPERATION LIFT TIG
Before starting any welding activity ensure that you have suitable eye protection and
protective clothing. Also take the necessary steps to protect any persons within the welding
area.
Indicator for 2T
Torch Trigger Operation Indicator for 4T
2T mode (normal trigger control)
The 2T (
↑↓)
LED light will illuminate when the power source is in 2T welding mode.
In this mode, the torch trigger must remain pressed (closed) for the welding output to be
active. See example below:
Press and hold the torch trigger to activate the power source, the gas valve and gas will flow.
After the gas pre flow time ends, the welding arc will ignite when the tungsten touches and then is
retracted from the work piece and then the
current rises up (slope up time) to the welding
current value gradually until you achieve the
preset welding current.
When the torch switch is released, the current
begins to drop gradually (slope down time)
and when it drops to the minimum current
value, the welding output is cut off and the
gas valve will close, once the post flow time
ends, this is the end of the welding process.
If the torch switch is pressed down during the
current downslope period, the current will rise
up again to the preset welding current value and the slope out process will only start again once the torch
switch to be released.
4T (latch trigger control)
The 4T
↕↕
LED will illuminate when the power source is in 4T welding mode, this trigger mode is mainly
used for long welding runs to assist in reducing operator finger fatigue. In this mode the user can press
and release the torch trigger and the output
will remain active until the trigger switch is
depressed again and released.
In 4T mode, the gas valve opens when the
torch switch is pressed down, after the
pre flow time ends, the welding arc will ignite
when the tungsten touches and then is
retracted from the work piece. Once the
welding arc has successfully ignited the initial
current value is active and the torch switch
can now be released, the welding current rises
up to the preset welding current value
gradually and you will continue to weld your
material.
To finish welding, simply press the torch switch down again and the current will begin to gradually drop
(slope out time) to the final current value. When the torch switch is released the current output is cut off
and the gas will continue to flow until your preset post flow time has elapsed.