Arc Welding Hazards - STAYER WELDING TIG 200 HF P Mode D'emploi

2.2. Arc-welding hazards
Only qualified persons may install, operate,
maintain and repair this machine.
During its operation, keep anyone away, especially
children.
ELECTRIC shock may kill you.
Touching live current carrying parts may cause fatal electric
shock or serious burns. The working and electrode circuit is
always electrically live when the machine output is on. The input
circuit and the inner circuits of the machine are also electrically
live when the machine is on. When welding with automatic or
semiautomatic equipment, the wire, the reel, the frame containing
the supply rolls and all metal parts touching the welding wire are
electrically live. Incorrectly-installed or not-earthed equipment is
a very serious danger.
• Do not touch electrically live parts.
• Use dry isolating gloves without openings, and protection on
your body.
• Isolate yourself from the work and from the ground by using
carpets or covers that are sufficiently large to prevent any
physical contact with the work or ground.
• Do not use the AC output in humid areas, when movement is
restricted or when in risk of falling down.
• Use an AC output ONLY when required by the welding process.
• When an AC output is required, use a remote control if there is
one present in the unit.
• Additional safety precautions are required when any of the
following dangerous electric conditions is present in humid
rooms or while you are wearing humid clothing, when working
on metal structures such as floors, grates or scaffolds; when you
are in a tight position such as seated, kneeling, laying down or
when there is a high risk of having unavoidable or accidental
contact with the workpiece or ground.
• Disconnect power input or stop the motor before installing or
servicing this equipment.
• Install equipment and connect it to ground in accordance with
the operator's manual and national, state and local codes.
• Always check the supply to ground – check and make sure that
the power input to the ground wire is appropriately connected
to the grounding terminal at the disconnection box or that its
plug is appropriately connected to the output receptacle that is
connected to ground. When making these input connections,
first connect the ground conductor and double-check the
connections thereof.
• Keep supply cords free of oil and fat, and protected from hot
metal and sparks.
• Inspect power input cord frequently regarding damage or bare
cable. Replace cord immediately if damaged – a bare cable may
kill you.
• Switch off the whole equipment when you are not using it.
• Do not use cables which are worn-out, damaged, very small-
sized or wrongly connected.
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• Do not wrap cables around your body.
• When a grounding clamp is required for a work, make ground
connection using a separate cable.
• Do not touch the electrode when you are in contact with the
work or the grounding circuit or another electrode of a different
machine.
• Do not put into contact two electrode carriers that are connected
to different machines at the same time, because in that case
there will be open-circuit double voltage.
• Use equipment in a well-maintained condition. Repair or replace
damaged parts immediately. Maintain the unit in accordance
with the manual.
• Use safety braces to prevent it from falling down when working
above floor level.
• Keep all panels and covers in place.
• Put the clamp of the work cable in good metal-to-metal contact
to the work or the work table as close as possible to the weld as
it is practical.
• Keep or isolate the grounding clamp such that there is no
contact with any metal or any grounded article.
• Isolate the grounding bracket when not connected to the
workpiece to prevent it from contacting any metal article.
HOT PARTS may cause serious burns.
• Do not touch hot parts with your hand without glove.
• Allow that there is a cooling period before working at the
machine.
• To handle hot parts, use appropriate tools and/or put on heavy
gloves, with insulation for welding and clothing to prevent burns.
SMOKE and GASES may be dangerous.
Welding produces smoke and gases. Breathing in these gases
and smoke may be dangerous for your health.
• Keep your head out of the smoke. Do not breathe in smoke.
• When you are indoors, ventilate the area and/or use forced
local ventilation in front of the arc to withdraw welding smoke
and gases.
• When ventilation is bad use an authorized respirator.
• Read and understand the Data Sheets on Material Safety
(MSDSs) and the manufacturer's instructions regarding
materials, consumables, coatings, cleansers, degreasing
agents.
• Do work within a closed space only if it is well ventilated or
while using an air respirator. Always have near a trained person.
Welding smoke and gases may displace air and reduce oxygen
level causing harm to health or death. Make sure that air for
breathing is safe.
• Do not weld at locations near to operations involving grease,
cleaning or spraying paint. Heat and bolts of the arc may react
with vapors and form strongly irritating and toxic gases.
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