Lincoln Electric IM10076 LN-25 PRO - Manual (Page 24)

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.
7. POLARITY LED
The Polarity LED
lights when the wire
feeder is connected
for positive polarity.
Use the polarity
LED to verify the
wire feeder is connected for the proper polarity.
b-6 OPERATION b-6
LN-25™ PRO
2. WIRE FEED SPEED KNOb
Use the Wire Feed Speed Knob to adjust the rate of
wire feed speed.
WFS range for standard torque:
High = 50 to 700 ipm
Low = 50 to 200 ipm
WFS range for extra torque:
High = 50 to 400 ipm
Low = 50 to 200 ipm
Because the wire feeder is powered by the arc volt-
age, the full range of wire feed speed may not be
available at low voltages.
3. WIRE FEED SPEED RANGE SWITCh
Use to select either the low range or high range for
the wire feed speed knob. Note – selecting the low
range does not increase the torque of the wire
drive.
4. 5-PIN GuN TRIGGER CONNECTOR
There is one circular connector for the gun trigger
on the front of the LN-25™ PRO. Note – if the gun
trigger is already depressed when the feeder is
powered up, the feeder will not activate. Release
and then press the gun trigger to begin welding.
5. WORK SENSE LEAD
Always turn power off at the welding power source
before moving the work sense lead.
The work sense lead attaches to the item being
welded.
6. 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.
+ POLARITY
POLARDAD
- POLARITÉ
A
E
C B
D
Pin
A
B
C
D
E
Wiring
5 volt supply
Not used
Trigger
Not used
Not used
Function
5-pin trigger
connector for
push-guns
only.