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LF-72/74
OPERATION
BB-2 BB-2
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SAFETY PRECAUTIONS
Read this entire section of operating instructions
before operating the machine.
ELECTRIC SHOCK can kill.
• Unless using cold feed feature, when
feeding with the gun trigger, the elec-
trode and drive mechanism are
always electrically energized and
could remain energized several sec-
onds after welding ceases.
• Do not touch electrically live parts or electrodes
with your skin or wet clothing.
• Insulate yourself from the work and ground.
• Always wear dry insulating gloves.
-------------------------------------------------------------
ONLY QUALIFIED PERSONS SHOULD INSTALL,
USE OR SERVICE THIS EQUIPMENT. READ AND
FOLLOW THE MANUFACTURER’S INSTRUCTIONS,
EMPLOYER’S SAFETY PRACTICES AND MATERI-
AL SAFETY DATA SHEETS (MSDS) FOR CONSUM-
ABLES.
-----------------------------------------------------------
READ THIS WARNING, PROTECT YOURSELF &
OTHERS.
FUMES AND GASES can be dangerous.
• Keep your head out of fumes.
• Use ventilation or exhaust at the arc,
or both, to keep fumes and gases
from your breathing zone and gener-
al area.
WELDING SPARKS can cause fire or
explosion.
• Do not weld near flammable material.
• Do not weld on containers which have
held flammable material.
ARC RAYS can burn.
• Wear eye, ear, and body protection.
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Observe additional guidelines detailed in the begin-
ning of this manual.
WARNING
COLD FEED
POSITIVE OUTPUT
NEGATIVE OUTPUT
PROTECTIVE
GROUND
WARNING OR
CAUTION
DANGEROUS
VOLTAGE
SHOCK
HAZARD
WELDING
FUMES
EXPLOSION
GAS INPUT
WORK
CONNECTION
GRAPHIC SYMBOLS THAT APPEAR ON
THIS MACHINE OR IN THIS MANUAL
COMMON WELDING ABBREVIATIONS
WFS
• Wire Feed Speed
CV
•
Constant Voltage
GMAW (MIG)
• Gas Metal Arc Welding
FCAW (Innershield or Outershield)
•
Flux Core Arc Welding