Operation; Safety Precautions; General Description; Included Equipment - Lincoln Electric SQUARE WAVE TIG 175 Service Manual

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SAFETY PRECAUTIONS

Read and understand this entire section before oper-
ating the machine.
WARNING
ELECTRIC SHOCK
can kill.
• Do not touch electrically live parts or
electrode with skin or wet clothing.
• Insulate yourself from work and ground.
• Always wear dry insulating gloves.
• Read and follow "Electric Shock Warnings"
in the Safety section if welding must be
performed under electrically hazardous
conditions such as welding in wet areas or
on or in the workpiece.
FUMES AND GASES
can be dangerous.
• Keep your head out of fumes.
• Use ventilation or exhaust to
remove fumes from breathing
zone.
WELDING SPARKS
can cause fire or
explosion
• Keep flammable material away.
• Do not weld on containers that
have held combustibles.
ARC RAYS
can burn.
• Wear eye, ear and body
protection.
Observe additional Safety Guidelines detailed in
the beginning of this manual.

OPERATION

GENERAL DESCRIPTION

The Square Wave TIG 175 is a constant current, sin-
gle range AC/DC TIG (GTAW) arc welding power
source with built-in arc starter / stabilizer. It also has
stick welding (SMAW) capability.
The Square Wave TIG 175 is recommended for the
TIG (GTAW) and stick (SMAW) welding processes
within its output capacity of 12 to 175 amps, on both
AC and DC polarity.

INCLUDED EQUIPMENT

For GTAW (TIG Welding):
• TIG torch, factory assembled with:
• 12.5 ft (3.8m) one-piece cable
• 3/32" Collet body
• 3/32" Collet
• Short backcap
Not assembled:
• 3/32" x 7" 2% Thoriated Tungsten Electrode
• Long backcap
• 1/2" Diameter Alumina gas cup
• Adjustable argon gas pressure regulator and flow
gage
• Gas hose
• Foot Amptrol
(4.6m) cable
For SMAW (Stick Welding):
• Electrode holder with cable and quick connect plug
• Electrode sample pack.
For Installation and startup:
• "How To" VHS Videotape
• Work Cable and Clamp
• Input Cord
• Input plug and receptacle (208/230 volt models only)

WELDING CAPABILITY

The Square Wave TIG 175 is rated at 150 amps, 15
volts, at 25% duty cycle on a ten minute basis. It is
capable of higher duty cycles at lower output currents.
It is capable of 175 amps, 27 volts at a lower duty
cycle. If the duty cycle is exceeded, a thermal protec-
tor will shut off the output until the machine cools.
SQUARE WAVE TIG 175
remote current control with 15ft
tm
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