Thermal Arc 400 GTSW AC/DC, Operating Manual

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v INTRODUCTION
Electric Shock
ELECTRIC SHOCK can kill.
Do not contact electrically live parts.
Install equipment according to safety precautions, instruction
manual, and all applicable codes.
Keep all panels, covers, and guards in place.
Disconnect all primary power before installing or servicing this
equipment.
Insulate operator and others from work and ground.
Replace any cracked or damaged insulating parts.
Shut down welding power source before touching electrode, wire
drive assembly, welding wire, wire reel, or any metal parts in
contact with the welding wire.
Exposed hot conductors or other bare metal in the welding circuit
or in ungrounded, electrically hot equipment can cause poten-
tially fatal electric shock. Do not contact a wet surface when
welding without suitable protection.
Wear dry insulating gloves and body protection. Keep body and
clothing dry. Never work in damp area without adequate insula-
tion against electrical shock. Stay on a dry duckboard, or rubber
mat when dampness or sweat cannot be avoided. Sweat, sea
water, or moisture between body and an electrically hot part or
grounded metal reduces electrical resistance and could cause
potentially fatal electric shock.
A voltage will exist between the electrode and any conducting
object in the work circuit. Examples of conducting objects in-
clude, but are not limited to, buildings, electrical tools, work
benches, welding power source cases, workpieces, etc. Never
touch electrode to any metal object unless the welding power
source is off.
Arc welding equipment must be grounded according to the
National Electrical Code, and the work must be grounded accord-
ing to ANSI Z49.1 “Safety in Welding and Cutting.”
When installing, connect the frames of each unit such as welding
power source, control, work table and water circulator to the
building ground. Conductors must be adequate to carry ground
currents safely. Equipment made electrically hot by stray current
may cause potentially fatal electric shock. Do not ground to
electrical conduit or to pipe carrying any gas or flammable liquid
such as oil or fuel.
Check phase requirements before installing. If only three-phase
power is available, connect single-phase equipment to only two
wires of the three-phase line. Do not connect the equipment
ground lead to the third (live) wire, or the equipment will be-
IMPORTANT SAFETY PRECAUTIONS (continued)