Lincoln Electric IM10080 RED-D-ARC LN-25 PRO EXTREME DUAL POWER - Manual (Page 16)

PRESSURE ARM ADJUSTMENT
ELECTRIC SHOCK can kill.
• Turn the input power OFF at the weld-
ing power source before installation or
changing drive rolls and/or guides.
• Do not touch electrically live parts.
• When inching with the gun trigger, electrode
and drive mechanism are "hot" to work and
ground and could remain energized several sec-
onds after the gun trigger is released.
• Do not operate with covers, panels or guards
removed or open.
• Only qualified personnel should perform mainte-
nance work.
------------------------------------------------------------------------
The pressure arm controls the amount of force the
drive rolls exert on the wire. Proper adjustment of the
pressure arm gives the best welding performance.
Many welding problems can be attributed to setting
the pressure arm too high and causing wire deforma-
tion. Set the pressure arm to minimum amount that
provides reliable feeding.
Set the pressure arm as follows:
(See Figure A.3)
Aluminum wires between 1 and 2
Cored wires between 1 and 3
Steel, Stainless wires between 3 and 5
LOADING SPOOLS OF WIRE
• Keep hands, hair, clothing and tools away from
rotating equipment.
• Do not wear gloves when threading wire
or changing wire spool.
• Only qualified personnel should install,
use or service this equipment.
------------------------------------------------------------------------
Loading 10 to 15 lb. (4.5 – 6.8kg) Spools.
A K468 spindle adapter is required for loading 2"
(51mm) wide spools on 2" (51mm) spindles. Use a
K468 spindle adapter for loading 2-1/2" (64mm) wide
spools.
WARNING
WARNING
6
AL
FCAW
GMAW
FIGURE A.3
A-7 INSTALLATION
RED-D-ARC LN25™ PRO EXTREME DUAL POWER
A-7
PROCEDURE TO INSTALL DRIVE ROLLS
AND WIRE GUIDES
• Turn the input power OFF at the
welding power source before instal-
lation or changing drive rolls and/or
guides.
• Do not touch electrically live parts.
• When inching with the gun trigger, electrode
and drive mechanism are "hot" to work and
ground and could remain energized several sec-
onds after the gun trigger is released.
• Do not operate with covers, panels or guards
removed or open.
• Only qualified personnel should perform mainte-
nance work.
------------------------------------------------------------------------
1. Turn power off at the welding power source.
2. Release the idle roll pressure arm.
3. Remove the outer wire guide by turning the knurled
thumbscrews counter-clockwise to unscrew them
from the feed plate.
4. Rotate the triangular lock and remove the drive
rolls.
5. Remove the inner wire guide.
6. Insert the new inner wire guide, groove side out,
over the two locating pins in the feed plate.
7. Install a drive roll on each hub assembly secure
with the triangular lock.
8. Install the outer wire guide by aligning it with the
pins and tightening the knurled thumbscrews.
9. Close the idle arm and engage the idle roll pressure
arm. Adjust the pressure appropriately.
WARNING