B-1

OPERATION

B-1

SAFETY PRECAUTIONS

READ AND UNDERSTAND ENTIRE SECTION BEFORE OPERATING MACHINE.

WARNING

• ELECTRIC SHOCK CAN KILL. Unless using COLD FEED fea- ture, when feeding with gun trig- ger, the electrode and drive mechanism are always electri- cally energized and could remain energized several sec- onds after the welding ceases..

Do not touch electrically live part or electrode with skin or wet clothing.

Insulate yourself from work and ground.

Always wear dry insulating gloves.

Do not operate with covers, panels or guards removed or open.

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• FUMES AND GASSES can be dangerous.

• Keep your head out of fumes.

• Use ventilation or exhaust to remove fumes from breathing zone.

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• WELDING SPARKS can cause

fire or explosion.

• Keep flammable material away.

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ARC RAYS can burn.

• Wear eye, ear and body protec-

tion.

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SEE ADDITIONAL WARNING INFORMATION UNDER ARC WELDING SAFETY PRECAUTIONS AND IN THE FRONT OF THIS OPERATING MAN- UAL.

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GRAPHIC SYMBOLS THAT APPEAR ON THIS MACHINE OR IN THIS MANUAL

WIRE FEEDER

POSITIVE OUTPUT

 

 

 

 

 

 

 

 

NEGATIVE OUTPUT

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

INPUT POWER

 

 

 

 

 

 

 

 

DIRECT CURRENT

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

U0

OPEN CIRCUIT

 

 

VOLTAGE

 

 

 

 

 

 

 

 

 

 

U1

INPUT VOLTAGE

 

 

U2

OUTPUT VOLTAGE

 

 

 

I1

INPUT CURRENT

 

 

 

I2

OUTPUT CURRENT

 

 

 

 

 

 

 

 

PROTECTIVE

 

 

 

 

 

 

 

 

GROUND

 

 

 

 

 

 

 

 

WARNING OR

CAUTION

AutoDrive™ 4R220

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Lincoln Electric 4R220 manual Operation, Safety Precautions