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5 OPERATION
5.
Close the pressure rollers on the wire.
6.
Re-connect the torch assembly on the EMP unit.
7.
Power ON the EMP unit.
NOTE!
The gas does not need to be connected for this procedure.
8.
With the torch cable reasonably straight, feed the wire through the torch cable till
visible at its welding tip by depressing the trigger switch on the torch. Refer to the
relevant Torch manual for length of wire-protrusion at tip end.
9.
Adjust the wire-feed pressure by adjusting the tension on the wire at the wire-feed
rollers by using the procedure in "Setting the wire-feed pressure" section for a more
accurate adjustment of this tension knob.
10. Close the door on the wire-bobbin side of the EMP unit.
5.13
Overheating protection
The welding power source has overheating protection that operates if the internal
temperature becomes too high. When this occurs, the welding current is interrupted, and an
overheating symbol appears on the display. The overheating protection resets automatically
when the temperature has returned to normal working temperature.
5.14
Lift-TIG welding
2-stroke and 4-stroke welding process illustrated
The trigger is used and some current flows already when lifting away the electrode to strike
it.
1.
The electrode is touched on to the work piece.
2.
The trigger switch is pressed, and a low current starts to flow.
3.
The welder lifts the electrode from the work piece: the arc strikes, and the current rises
automatically to the set value.
0463 605 001
CAUTION!
This unit is equipped with overheating protection for its power
supply.
- 34 -
© ESAB AB 2018
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