Lincoln Electric LN -15 WIRE FEEDER IM823-A - Manual (Page 17)

B-2 OPERATION B-2
GENERAL DESCRIPTION
The LN™-15 is a light weight, portable, durable semi-
automatic wire feeder.
The LN™-15 accommodates spools 8" (200mm)
diameter up to 4" (100mm) wide.
The domestic feeders comes factory equipped with a
K1500-2 Magnum Tweco-compatible style #2-#4 gun
bushing. Other K1500 series gun bushings are avail-
able as field installed options. European models are
factory equipped with a Fast-Mate adapter.
The wire drive is capable of operating in either a "CV"
or "CC" mode. A constant voltage (CV) power source
is recommended for flux-cored arc welding (FCAW)
and gas metal arc welding (GMAW) to obtain code
quality results. However, the LN™-15 may also be
used with a constant current (CC) power source to
obtain passable results for non-critical quality applica-
tions.
The “dual procedure” mode drops the WFS to 83% of
the original set point. The voltage setting remains the
same.
• Burn-back is adjustable from 0.0 to 0.25 seconds,
with a default of 0.00 seconds.
• The preflow time is adjustable from 0.00 to 25.0 sec-
onds, with a default of 0.00 seconds.
• The postflow time is adjustable from 0.0 to 25.0 sec-
onds, with a default setting of 0.0 seconds.
The Across the Arc Model is capable of operating with
Lincoln DC power sources supplying between 15VDC
and 110 VDC. Simply attach the work clip to the work
piece and then connect the LN™-15 to the electrode
cable to the power source and it is ready to weld.
An internal contactor in Across the Arc Models ener-
gizes the electrode output in response to the gun trig-
ger.
LN™-15 ACROSS THE ARC MODEL & (CE)
DUTY CYCLE
The LN™-15 wire feeders are intended for semi-auto-
matic use. The maximum rating of the LN™-15 is
based upon a 60% duty cycle; welding 6 minutes of
welding followed by 4 minutes of idling within a 10
minute period.
RECOMMENDED PROCESSES
The LN™-15 wire drive feeds electrode for various
processes as follows:(See Table B.1)
The Across the Arc Model is suitable for GMAW,
GMAW-Pulse and FCAW semi-automatic applications
within the rated duty cycle.
PROCESS LIMITATIONS
• The across the arc model is not recommended for
spot or stitch welding.
• The across the arc model is not recommended for
GMAW-STT, SAW, SMAW, GTAW or CAG.
EQUIPMENT LIMITATIONS
Codes 10864, 10865
• The LN™-15 cannot be used with K489-7 Fast Mate
Gun receiver bushing or K1500-4 gun adapter bush-
ing.
Codes 11033 and higher
• The LN™-15 cannot be used with the K1500-4 gun
adapter bushing.
OPERATIONAL FEATURES AND
CONTROLS
• Built in flow meter for adjusting shielding gas.
• Cold Feed/Gas Purge switch.
• 2 step/Trigger Interlock switch (codes 11033 and
above only.)
• Digital wire feed speed control.
• Digital display of welding voltage.
• Adjustable preflow and postflow times
• Adjustable burnback times.
• On/Off switch (codes 11033 and above only.)
Process Wire Diameter Range Wire Feed Speed Range
GMAW 0.023 - 0.052" (0.6 - 1.3 mm) 50 - 700 ipm (1.3 - 17.8 m/minute)
FCAW 0.045 - 0.052" (1.2 - 1.3 mm) 50 - 700 ipm (1.3 - 17.8 m/minute)
FCAW 1/16 - 5/64" (1.6 - 2.0 mm) 50 - 400 ipm (1.3 - 10.2 m/minute)
TABLE B.1