Operation, Safety instructions, General description – Lincoln Electric IM998 INVERTER ARC 120 User Manual

Page 13: Warning

B-1

OPERATION

INVERTER ARC™ 120

B-1

Read and understand this entire section before
operating your machine.

SAFETY INSTRUCTIONS

ELECTRIC SHOCK can kill.

• Do not touch electrically live parts such

as output terminals or internal wiring.

• Insulate yourself from the work and

ground.

• Always wear dry insulating gloves.

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Only qualified personnel should operate this equip-
ment. Observe all safety information throughout this
manual.

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GENERAL DESCRIPTION

The INVERTER ARC™ 120 is a 90 amp arc welding
power source which utilizes single phase input power
to produce constant current output. The welding
response of this Inverter has been optimized for stick
(SMAW) welding.

WELDING CAPABILITY

The INVERTER ARC™ 120 is rated at 70 amps, 22.8
volts, at 20% duty cycle on a ten minute basis. It is
capable of higher duty cycles at lower output currents.
If the duty cycle is exceeded, a thermal protector will
shut off the output until the machine cools. See Table
A.1 in the INSTALLATION Section for other rated out-
puts.

The INVERTER ARC™ 120 is recommended for the
following Electrode Types and Diameters:

X - 15 Amp Branch circuit or greater required.

- 20 Amp Branch circuit or greater required.

LIMITATIONS

The INVERTER ARC™ 120 is not recommended for
pipe thawing.

WARNING

FUMES AND GASES
can be dangerous.

• Keep your head out of fumes.
• Use ventilation or exhaust to

remove fumes from breathing
zone.

ARC RAYS
can burn.

• Wear eye, ear and body

protection.

WELDING, CUTTING and
GOUGING SPARKS
can cause fire or explosion

• Keep flammable material away.
• Do not weld, cut or gouge on contain-

ers that have held combustibles.

Types

Fleetweld 37
(E6013)
Fleetweld 35
(E6011)
Excalibur 7018 MR
(E7018)

1/16

5/64

3/32

1/8

Sizes (in.)