gala gar Smart 400 TIG Pulse Manual Técnico De Instrucciones página 30

Smart 400 TIG Pulse
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4T operation mode
In 4T mode, the gas valve opens after the torch switch is pressed down. After the pre-flow time ends, discharge
begins to ignite arc. After arc is ignited successfully, the initial current is output. After the torch switch is released, the
current rises up to the welding current value gradually and gets locked. When the torch switch is pressed down again,
the current begins to drop gradually to the pilot arc current value. When the torch switch is released again, the
current output is cut off.
Repeating operation mode
In repeating mode, the gas valve opens after the torch switch is pressed down. After the pre-flow time ends,
discharge begins to ignite arc. After arc is ignited successfully, the pilot arc current is output. After the torch switch is
released, the current rises up to the welding current value gradually. When the torch switch is pressed down again,
the current begins to drop gradually to the pilot arc current value. When the torch switch is released again, the
current rises up to the welding current value gradually again. "Repeating" means the welding current varies between
the pilot arc current value and the welding current value.
To extinguish arc, please keep the torch away from workpiece to increase arc voltage,the arc can be extinguished
immediately and the current output will be cut off. The gas valve closes when the post-flow time ends, and the
welding process ends.