Nelweld Operations and Service Manual
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ELECTRIC AND
MAGNETIC FIELDS
MAY BE DANGEROUS
WELDING SPARKS
CAN CAUSE FIRE OR
EXPLOSION
•
Have a fire extinguisher readily available.
•
Electric current flowing through any current conducting
material causes localized Electric and Magnetic Fields
(EMF). Welding causes EMF around welding cables and
welding machines.
•
EMF may interfere with some pacemakers. Welders
having a pacemaker should consult his or her physician
before welding.
•
Remove fire hazards from the welding area. If this is
not possible, cover them to prevent the welding sparks
from starting a fire. Remember that welding sparks
and hot materials from welding can easily go through
small cracks and openings to adjacent areas. Avoid
welding near hydraulic lines.
•
Exposure to EMF generated while welding may have
other additional health risks. These effects are currently
unknown, but are under investigation.
•
All welders should use the following procedures in
order to minimize exposure to EMF from the welding
circuit:
•
Sparks and spatter are thrown from the welding arc.
Wear oil free protective garments such as leather
gloves, heavy shirt, cuffless trousers, high shoes, and
a cap over your hair. Always wear safety glasses with
side shields when in a welding area.
Route the gun and ground cables together and
secure them together with tape, when possible.
Never coil the gun cable around your body.
Do not place your body between the gun and ground
cables. If the gun is on your right side, the ground
cable should also be on your right side.
Connect the ground cable to the workpiece as close
as possible to the area being welded.
ELECTRIC SHOCK
CAN KILL
Do not work next to the welding power source.
Maintain at least 3 feet between you and the
welding power source.
•
The gun and ground circuits are electrically live, or
“hot,” when the welder is powered and the gun trigger
is pressed. Do not touch these “hot” parts with your
bare skin or wet clothing.
ARC RAYS CAN BURN
•
Wear dry, hole-free gloves to insulate hands. Insulate
yourself from work and ground circuits using dry
insulation. Make certain the insulation is large
enough to cover the full area of physical contact
between you and the work and ground circuits.
•
Ground the workpiece to be welded to a good
electrical (earth) ground using the ground cable.
•
Use a face/eye shield with the proper filter and cover
plates to protect your eyes from sparks and the rays of
the arc when welding or observing open arc welding.
Faceshield and filter lenses should conform to ANSI
Z87. I standards.
•
Always be sure the ground cable maintains a solid
electrical connection with the metal being welded. The
connection should be as close as possible to the area
being welded.
•
Use suitable clothing made from durable flame-resistant
material to protect you. Any assistants should dress to
the same standard as the primary welder.
•
Protect other nearby personnel with suitable, non-
flammable screening and/or warn them not to watch the
arc or expose themselves to the arc rays, hot spatter or
newly welded metal.
•
Maintain the welding gun(s), work clamps, welding
cables, and welding machine so that they are in good,
safe operating condition. Replace any damaged
insulation.
DANGER
Summary of Contents for Nelweld 4000
Page 58: ...Nelweld Operations and Service Manual 58 7 5 Declaration of Conformity...
Page 61: ...Nelweld Operations and Service Manual 61 8 2 Base and Side Cabinet Section...
Page 65: ...Nelweld Operations and Service Manual 65 8 4 Rear Cabinet Section...
Page 67: ...Nelweld Operations and Service Manual 67 8 5 Wiring Diagram...
