MK Products CobraMig 260 PS/Feeder - Manual (Page 14)

CobraMig 260 Owner's Manual - Page 8
The Trigger Latch mechanism gives the operator the fl exibility of normal
trigger operation (pull trigger to weld - release trigger to stop). This also
offers the comfort of latched trigger operation (pull trigger once to latch and
weld - pull trigger again to unlatch and stop).
POSA START OPERATING PROCEDURE
General
The Posa Start Run-in Speed Control, located on the front panel, provides
adjustment for slow wire run-in. Once the arc has been established, the
wire feed speed is automatically changed from the slow run-in speed to the
welding speed set on the torch potentiometer. This slow run in speed helps to
reduce “burn-backs” and “push-back” during arc start.
Posa Start Operation
Turn the Cobramatic to the “ON” position and the Posa Start to the “OFF”
position.
Adjust power source to desired voltage for your weld condition.
Depress gun trigger and adjust wire feed speed at gun to match voltage
setting. If approximate wire feed is not known, it is better to start with excess
wire feed rather than too little, in order to prevent a “burn-back”.
Turn the Posa Start switch to the “ON” position. Press torch trigger and,
using Run-in Speed Control, adjust wire feed rate to approximately 10% of
the welding wire speed.
Strike an arc, and adjust wire feed rate at gun until correct condition is
achieved.