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OPERATION | ||
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OPTIONAL PREFLOW, BURNBACK AND
POSTFLOW TIMER KIT (K2330-2)
The preflow, Burnback and Postflow Timer Kit gives you control over the shielding gas at the beginning and end of the weld and prepares the end of the wire for the next arc start. Additional shielding gas protection is often required when welding aluminum, stainless steel or exotic alloys.
NOTE: When stitch welding, set the postflow time to maximum for best results.
Preflow Timer
The preflow timer range is OFF to 10 seconds. Preflow time is the time delay from when the trigger is pulled to when the wire starts to feed and is energized. Preflow is used purge the welding gun with shielding gads and helps to maximize porosity at the start of the weld.
Burnback Timer
The Burnback timer range is OFF to 0.25 seconds. The burnback timer controls the additional amount of time the power source output remains ON after the wire drive has stopped feeding wire. Burnback adjust- ment prevents the wire from sticking to the weld at the end of a weld and helps to condition the wire for the next weld.
To set the burnback time, adjust the knob to approxi- mately 0.03 seconds and then decrease or increase the time as desired.
Postflow Timer
The postflow timer range is OFF to 10 seconds. Postflow is the time from when the power source out- put turns OFF until the postflow timer expires. Use postflow to protect the weld while the weld cools.