Lincoln Electric IM408 MAGNUM SG SPOOL GUN - Manual (Page 15)

OPERATING INSTRUCTIONS
Safety Precautions
Setup Procedure
Selecting Electrode Wire
Several alloy types of filler metals are available,
and the best choice depends on the type of base
metals and the desired characteristics of the
weldment, such as ductility and strength,
c o r r o s i o n r e s i s t a n c e , s u s t a i n e d s e r v i c e
temperature, and anodic treatment color
8
matching. In addition, several wire sizes are
available, and the choice here will depend upon
several factors, including base metal thickness
and the arc transfer process used. Consult your
local dealer or appropriate AWS publication for
help in selecting an appropriate alloy type and
wire size. Also refer to Part B, “Procedure
Settings”, for wire sizes used with typical base
metal thicknesses and procedure settings.
Loading Electrode Wire
1. Pull off gas cone and push idle roller pressure
release lever up.
2. Unscrew and remove contact tip.
3. Unscrew spool cover knob and remove spool
cover.
4. Unscrew and remove knurled spool brake
nut.
WARNING: Electric shock can kill. Fumes and gases
can be dangerous to your health. Arc rays can injure
e y e s a n d b u r n s k i n . S e e a d d i t i o n a l w a r n i n g
information under “Arc Welding Safety Precautions”
on inside of front cover of operating manual. When
inching, the electrode and drive mechanism are
always electrically energized and remain energized
several seconds after the gun trigger is released.