Recommendations - Polysoude PS 164-2 Operating, Maintenance And Programming Manual

PS 164-2

1. 3. Recommendations

Risk of electric shocks
Live parts include the electrode, the weld circuit, the
supply circuit and the internal circuits, the fi ller wire
and metal parts in contact with it, the wire feeder
unit and the wire feeding mechanism. Any contact
with these parts can cause an electric shock if the
installation is connected to the mains supply.
Circumstances increasing the risk of electric shocks:
humid environment, work on a conducting surface,
poor earth connection, installation in bad condition,
unsafe work conditions.
To prevent risks:
• Avoid any contact with energised wire spools.
• Inspect water cooled torches regularly to detect
leakage, pay attention to condensation phenom-
ena.
• Do not wind the cables around your body.
• Make sure that the electrode is not energised
when changing it.
• Before any maintenance, repair or pause, discon-
nect the equipment from the mains supply.
• Wear gloves, clothes, aprons and safety shoes
that are dry and without holes.
• Carpets or other insulating materials must be
used if the welder has to work on metallic sur-
faces or structures.
• The equipment must be installed and earthed as
specifi ed in the operating manual.
• The current return cable must be fi xed correctly
(clean surface, solid clamping as close as possible
to the weld area).
• Cables that are damaged, worn or unsheathed,
the wrong size must or wrongly assembled must
not be used otherwise immediately.
• The power source must be properly earthed.
• Use a separate cable if the workpiece must be
earthed.
• Appropriate connectors must be used.
Be careful to the open circuit voltage limited to 80 V
effi cient in alternating current or 113 V in direct cur-
rent (necessary voltage for the arc ignition). Maxi-
mum power supply value for plasma cutting: 500 V.
6-92
During welding, fumes and gases are released which
are dangerous to your health. Avoid inhaling fumes.
Origin of released fumes and gases: basic material,
fi ller metal, weld coating (fl ux) with coated rod elec-
trodes, shielding gas, solvents and materials cover-
ing the workpiece.
To prevent risks:
• Use breathing apparatus like fi lter masks, ventilat-
ed masks, air-supply masks, disposable masks.
• Avoid chlorinated solvents.
• Dry the workpieces thoroughly before welding.
• Do not work alone!
• Eliminate fumes and gases where they develop.
• Remove paint, oil and any other coatings from the
surface.
The radiation from the arc causes eye and skin
burns.
Risk identifi cation: exposure to radiation from the arc
emitting visible and invisible intense radiation (ultra-
violet and infrared); radiation is refl ected if welding
metals like aluminium or stainless steel; fl ash burn,
sparks, stings caused by the tungsten electrode tip.
To prevent risks:
• Wear gloves or leather gauntlets to protect hands
and lower arms.
• Wear an apron or gaiters to protect the legs,
knees and feet.
• Carry a mask (strapped to the head, handheld or
electronic) or glasses equipped with an adequate
fi lter.
• Use shielding curtains to protect staff working
nearby.
• Wear a scarf around your neck and close the col-
lar of your clothing.
PN-0908073 Rev. 11
Risk of fume or gas inhala-
tion
Risk of eye or skin burn
caused by radiation
THE ART OF WELDING