WELDKAR WK MMA 4065 DC, Instruction Manual

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DC INVERTER WELDER WK MMA 4065
12
1. SAFETY INSTRUCTIONS AND
WARNINGS
1.1 ARC WELDING HAZARDS
WARNING
ELECTRIC SHOCK
can kill
Touching live electrical parts can cause fatal shocks
or severe burns. The electrode and work circuit is
electrically live whenever the output is on. The input
power circuit and machine internal circuits are also live
when power is on. In semi-automatic or automatic wire
welding, the wire, wire reel, drive roll housing, and all
metal parts touching the welding wire are electrically
live. Incorrectly installed or improperly grounded
equipment is a hazard.
1. Do not touch live electrical parts.
2. Wear dry, hole-free insulating gloves and body
protection.
3. Insulate yourself from work and ground using dry
insulating mats or covers.
4. Disconnect input power or stop engine before
installing or servicing this equipment. Lock input
power disconnect switch open, or remove line fuses
so power cannot be turned on accidentally.
5. Properly install and ground this equipment according
to its Owner’s Manual and national, state, and local
codes.
6. Turn OFF all equipment when not in use. Disconnect
power to equipment if it will be left unattended or
out of service.
7. Use fully insulated electrode holders. Never dip
holder in water to cool it or lay it down on the
ground or the work surface. Do not touch holders
connected to two welding machines at the same
time or touch other people with the holder or
electrode.
8. Do not use worn, damaged, undersized, or poorly
spliced cables.
9. Do not wrap cables around your body.
10. Ground the workpiece to a good electrical (earth)
ground.
11. Do not touch electrode while in contact with the
work (ground) circuit.
12. Use only well-maintained equipment. Repair or
replace damaged parts at once.
13. In confined spaces or damp locations, do not use a
welder with AC output unless it is equipped with a
voltage reducer. Use equipment with DC output
14. Wear a safety harness to prevent falling if working
above floor level.
15. Keep all panels and covers securely in place.
WARNING
ARC RAYS can burn eyes and skin;
NOISE can damage hearing.
Arc rays from the welding process produce intense heat
and strong ultraviolet rays that can burn eyes and skin.
Noise from some processes can damage hearing.
1. Wear a welding helmet fitted with a proper shade of
filter to protect your face and eyes when welding or
watching.
2. Wear approved safety glasses. Side shields
recommended.
3. Use protective screens or barriers to protect others
from flash and glare; warn others not to watch the
arc.
4. Wear protective clothing made from durable,
flame-resistant material (wool and leather) and foot
protection.
5. Use approved ear plugs or ear muffs if noise level is
high.
6. Never wear contact lenses while welding.
WARNING
FUMES AND GASES
can be hazardous to your health.
Welding produces fumes and gases.
Breathing these fumes and gases can be hazardous to
your health.
1. Keep your head out of the fumes. Do not breathe
the fumes.
2. If inside, ventilate the area and/or use exhaust at
the arc to remove welding fumes and gases.
3. If ventilation is poor, use an approved air-supplied
respirator.
4. Read the Material Safety Data Sheets (MSDSs)
and the manufacturer’s instruction for metals,
consumables, coatings, and cleaners.
5. Work in a confined space only if it is well ventilated,
or while wearing an air-supplied respirator. Shielding
gases used for welding can displace air causing
injury or death. Be sure the breathing air is safe.
6. Do not weld in locations near degreasing, cleaning,
or spraying operations. The heat and rays of the
arc can react with vapours to form highly toxic and
irritating gases.
7. Do not weld on coated metals, such as galvanized,
lead, or cadmium plated steel, unless the coating
is removed from the weld area, the area is well
ventilated, and if necessary, while wearing an
airsupplied respirator. The coatings and any metals
containing these elements can give off toxic fumes if
welded.
WARNING
Welding can cause FIRE or
EXPLOSION.
Sparks and spatter fly off from the
welding arc
The flying sparks and hot metal, weld spatter, hot
workpiece, and hot equipment can cause fires and
burns.
Accidental contact of electrode or welding wire to metal
objects can cause sparks, overheating, or fire
1. Protect yourself and others from flying sparks and
hot metal.
2 Do not weld where flying sparks can strike
flammable material.
3. Remove all flammables within 35 ft (11 m) of the
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