Lincoln International K2259-1 - Manual (Page 17)

Cobramatic ® Owner’s Manual - page 7
using Run-in Speed Control, adjust wire feed rate to approximately 50% of
welding wire speed set at gun.
Initiate an arc, and adjust wire feed speed at gun until correct condition is
achieved. At the moment when welding wire speed transition occurs, L4 will
illuminate.
POSA START WIRE SPEED NOTE:
Because the Posa Start Run-in Speed always remains a percentage
of the actual welding wire feed rate, the Posa Start run-in speed
will always slow down or speed up proportional to any
adjustment you now make at the gun. Therefore, if you slow down
the welding wire feed speed, you will have to increase
the Run-in Speed setting.
Remote Operation: Input/Ouput
The terminal strip TB1(reference Appendix pages) allows for external input
signals for remote operation of the feeder as well as output signals for volt-
age and wire speed measurements, for a wide variety of automatic and semi-
automatic applications. By making connections across specific points of
TB1, such functions as the trigger and motor speed control can be controlled
using an external source, such as a controller interface or a PLC (program-
mable logic controller).
Section C Accessories
None available.
Section D Maintenance
Routine Maintenance
Your Cobramatic ® is designed to provide years of reliable service. Normal
wear and component failure may require occasional service.
The number of units in operation and the importance of minimal “down time”
will determine to what extent spare parts should be stocked on hand.
If repairs do become necessary, any part can easily be replaced by qualified
shop maintenance personnel.
Maintenance of the gun will normally consist of a general cleaning of the wire
guide system, including tubes, drive rolls, and conduits at regular intervals.
Remove spatter build-up from inside of nozzles with a hardwood stick.
The only parts on the Cobramatic ® system that are subject to normal wear
are the conduit, contact tips, gas cups, front body liners, wire guides, drive
and idler rolls. A supply of these parts should be maintained on hand.
Figure 8