26
WIRING DIAGRAM
7
SAFETY INSTRUCTIONS….cont
ELECTRIC SHOCK
FIRE
Electric inverter welders have the potential to cause a shock that could lead to injury
or death. Touching electrically ‘hot’ parts can cause fatal shocks and severe burns;
While welding, all metal components connected to the welder are electrically ‘hot’.
Keep your body and clothing dry. Never work in a damp area without ade-
quate insulation against electrical shock, stay on a dry duck board, or rubber
mat when dampness or sweat can not be avoided. Sweat, sea water or mois-
ture between the body and an electrically ’hot’ part or grounded metal reduces
the body surfaces electrical resistance enabling dangerous and possibly lethal
currents to flow through the body.
Never
allow live metal parts to touch bare skin or any wet clothing, be sure
welding gloves are dry.
Before welding, check for continuity; Be sure the earth clamp is connected to
the work-piece as close to the welding areas as possible. Grounds connected
to building frame work or other remote locations from the welding area reduce
efficiency and increase the potential electric shock hazard. Avoid the possibility
of the welding current passing through lifting chains, crane cables or other elec-
tric paths.
Frequently inspect leads for wear, splits, cracks and any other damage.
Imme-
diately
replace those with worn or damaged insulation to avoid a possibly lethal
shock from bare leads.
During normal operation, the heat and sparks created during the welding process
have the potential to ignite flammable liquids, gases or other combustible material.
All inflammable materials must be removed from the area.
Have a suitable fire extinguisher available close by.
Causes of fire and explosion include; combustibles reached by the arc, flame,
flying sparks, hot slag or heated material, misuse of compressed gases and
cylinders and short circuits.
Flying sparks or falling slag can pass through cracks along pipes, through win-
dows or doors and through walls or floor openings and out of sight of the opera-
tor; Sparks and slag can fly up-to 10 metres.
Keep equipment clean and operable; Free of oil, grease and of metallic parti-
cles (in electrical parts) that can cause short circuits.
If combustibles are in the area.
Do not
weld , move the work if practical to an
area free of combustibles, avoid paint spray rooms, dip tanks, storage areas
and ventilators. If the work can not be moved, then move the combustibles at
