Operating Instructions For Timer Setting - Lincoln Electric POWER MIG 255XT Operator's Manual

OPERATION
It is not necessary to repeat either of the above
procedures each time the unit is powered up. The unit
will remember the run-in mode from the previous
power down and return you to that same state upon
your next power up. Thus, you need only perform one
of the above procedures when you want to change
the run-in mode.
OPERATING INSTRUCTIONS FOR
TIMER SETTINGS
Select the desired mode with the selector switch:
A. Normal Welding mode provides weld power only
while the trigger switch is depressed.
B. 4-Step Trigger interlock mode eliminates the
need to hold the gun trigger while welding. It
operates in 4 steps:
1. Close trigger and establish welding arc.
2. Release trigger and continue welding.
3. Reclose trigger near end of weld.
4. Release trigger again to stop welding.
If the arc is broken while using this feature, the
machine will reset to the "trigger off" condition
automatically.
Note: 4 Step Trigger interlock mode does not function
with a Spool Gun.
C. Spot Weld Mode is is used for tack welding parts
into position or for spot plug welds to hold thin
sheet metal together prior to manual stitch or
continuous welding. To use this feature, adjust
the On-Time (0-5 seconds) as appropriate to
obtain the desired results. Closing the trigger
initiates a single timed spot weld cycle.
Plug welds are made by using a punch to make a
3/16" (5 mm) diameter hole in the top sheet and
arc welding through the hole into the back sheet.