GWH4 datasheet(9/48 Pages) CLARKE

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persons who will be looking directly at the weld. Others working in the area should

wear flash goggles. Before starting to weld, make sure that screen or bay doors are

closed.

SHOCK PREVENTION

Exposed live conductors or other bare metal in the welding circuit, or in unearthed,

electrically-LIVE equipment can fatally shock a person whose body becomes a

conductor. DO NOT STAND, SIT, LIE, LEAN ON, OR TOUCH a wet surface when

welding without suitable protection.

PROTECTION FOR WEARERS OF ELECTRONIC LIFE SUPPORT

DEVICES (PACEMAKERS)

Magnetic fields from high currents can affect pacemaker operation. Persons wearing

pacemakers should consult with their doctor before going near arc welding or spot

welding operations.

PROTECTION AGAINST SHOCK

Keep your body and clothing dry. NEVER work in damp area without adequate

insulation against electric shock. Stay on a dry duckboard or rubber mat when

dampness or sweat can not be avoided. Sweat, sea water, or moisture between body

and an electrically LIVE part - or earthed metal - reduces the body surface electrical

resistance, enabling dangerous and possibly lethal currents to flow through the body.

EARTHING THE EQUIPMENT

When arc welding equipment is earthed according to the National Electrical Code and

the workpiece is earthed, a voltage may exist between the electrode and any

conducting object.

Examples of conducting objects include, but are not limited to, buildings, electrical

tools, work benches, welding power source cases, workpieces, etc. NEVER touch the

electrode and any metal object unless the welding power source is off. When

installing, connect the frames of each unit such as welding power source, control,

work table, and water circulator to the building earth. Conductors must be adequate

to carry earth currents safely. Equipment made electrically live by stray current may

shock, possibly fatally. DO NOT EARTH to electrical conduit or to a pipe carrying ANY

gas or a flammable liquid such as oil or fuel.

CABLES

Frequently inspect cables for wear, cracks and damage. IMMEDIATELY REPLACE those

with excessively worn or damaged insulation to avoid possibly lethal shock from bare

cable. Keep cables dry, free of oil and grease and protected from hot metal and

sparks.

TERMINALS AND OTHER EXPOSED PARTS

Terminals and other exposed parts of electrical units should have insulating covers

secured before operation.

GWH4 Datasheet(PDF) 9 Page - Clarke International