Lincoln Electric LN- 25 IM10084 - Manual (Page 20)

b-4 OPERATION b-4
LN-25™ IRONWORKER
THERMAL LED, MOTOR OVERLOAD
The thermal light illuminates when the wire
drive motor draws too much current. If the
thermal light illuminates, the wire drive will
automatically shutdown for up to 30 seconds to allow
the motor to cool. To start welding again, release the
gun trigger, inspect the gun cable, liner (and conduit).
Clean and make repairs as necessary. Start welding
again when the problem has been safely resolved.
For best results, keep the gun cable and conduit as
straight as possible. Perform regular maintenance
and cleaning on the gun liner, conduit and gun.
Always use quality electrode, such as L-50 or L-56
from Lincoln Electric.
POWER-UP SEQUENCE
All of the LED’s will briefly illuminate during power-up.
If the gun trigger is activated during power up, the
feeder will not operate until the gun trigger is released.
WIRE FEED SPEED/AMPERAGE DISPLAY
Idle
The left display shows the preset wire feed speed.
The right display shows OCV. The wire feed speed
LED is lit.
Welding
The value in the left display will be either amps or
actual wire feed speed, depending upon the selection
chosen in the set-up menu. The corresponding LED
below the display will light. Note that actual WFS may
not match preset WFS, if welding at low voltages with
high wire feed speeds. The right display shows the arc
voltage. If the wire feeder is connected for electrode
negative welding, then the voltage display shows a
minus sign.
After Welding
The display continues to hold the value of the amper-
age or WFS and arc voltage for five seconds after
welding stops. The amperage or WFS and voltage
displays flash.
SET-UP MENU
Preparation for WFS Calibration:
• Place the CV/CC switch in CV.
• Set the display to the desired wire feed speed
(example: 400 inches per minute)
• Measure the actual wire feed speed (example: 405
inches per minute)
• Place the WFS knob in the 12 o’clock position.
Preparation for Amperage Calibration:
Connect the feeder to a power source and grid.
Adjust the power source and grid to the desired
amperage. (example: 220 Amps)
Record the amperage display on the wire feeder.
(example: 210 amps)
To enter the set-up menu, use paper clip to press the
small button located on the case front.
A V E R T I S S E M E N T
A V
WFS
A V E R T I S S E M E N T
A V
AMPS VOLTAGE
BUTTON