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Safety instructions
such workpiece without its special
preparation can lead to fire and explo-
sion of fumes of flammables.
• Take safety measures to protect
nearby flammable materials from
sparks and drops of metal. For insula-
tion, put a piece of sheet metal or use
a dense, non-flammable fabric.
• Never weld freshly painted structures
and materials until the paint dries
completely.
• Sparks and drops of molten metal are
scattered in the process of welding.
They can get into the pockets and
clothing. Use tightly fitted clothing and
shoes with shut pockets. Do not allow
sparks to enter the gaps of wooden
decks and furniture.
• After finishing welding, make sure
that there are no smouldering objects
or drops of the molten metal in the
gaps. Before leaving work place, make
sure the smoke concentration is not
increasing.
• While welding never use clothing,
gloves and shoes with the traces of tar,
oil and other flammable liquid.
• Remove from the pockets flammable
and explosive objects, such as lighters
and matches.
• To avoid spontaneous starting of the
welding arc when the electrode holder
is in contact with the workpiece, do not
leave the switched on welding machine
unattended. Remove the electrode and
store the electrode holder on a safe
distance from a workpiece and other
objects which can create electrical
contact.
Hot surfaces
• The place of the weld and the adjacent
parts run hot and can cause severe
burns when in contact.
• Do not touch the workpiece until it
cools down completely.
• The TIG torch and the electrode are
also very hot. Do not touch them
immediately after finishing welding as
it can cause a burn.
• Do not remove the weld slag until it
cools down completely. The heated
slag may get into the eyes or on cloth-
ing and cause a burn.
Electromagnetic fields
• The magnetic field may effect the
operation of different electrical or elec-
tronic devices, e.g. pacemakers.
• Wearers of pacemakers or other vital
electronic equipment should consult
their physician before beginning any
arc welding.
• People with a pacemaker should be
kept away from welding area.
• Do not coil the cable around your body
while welding.
• If possible, twist together the electrode
holder cable and the negative clamp
cable.
• If possible, keep the electrode holder
cable and the negative clamp cable on
the same side.
Safety instructions
cause injure in the eyes and burn the
skin. Do not look at the welding arc
without proper eye protection. Always
use a welding helmet that covers your
face.
• Choose the clear shade range of the
welding lens in accordance with the
level of the welding current. For the
most common welding modes, a range
of 9-13 DIN is sufficient. For cold
running, a clear shade range of 5-9
DIN may be required. Modern welding
helmets allow smooth adjustment of
the clear shade range. The table below
provides the values of the clear shade
according to the type of welding and
welding current.
• UV and IR rays are dangerous to
uncovered skin and can cause skin
burns.
• Suitable protective flameproof clothing
must be worn at all time.
• The welding arc rays reflected from
walls and nearby objects, can cause
burns of the eye cornea and uncovered
skin areas in nonwelders. To protect
others, use flame proof screens or
natural barriers.
• If there are other people in the welding
area, warn them of the danger each
time before starting the welding arc so
that they can protect themselves from
Recommended filter shades for arc welding
Type of welding
Welding current, А
15
30
40
60
70 100 125 150 175 200 225 250 300
Coated electrodes
8
9
10
11
12
TIG-welding
8
9
10
11
12
Inert-gas arc welding of heavy
metals
9
10
11
Inert-gas arc welding of light-
weight alloy
10
11
12
injuries caused by hazardous radiation.
Fire safety
• In advance prepare fire fighting equip-
ment for the safe welding works. Keep
extinguishing equipment at a handy
location in good working order.
• Never weld near flammable and
explosive materials. Put a fire resis-
tant screen around the welding area.
If welding work has to be carried out
next to flammable materials cover
them with fire resistant material,
such as a piece of sheet metal or fire
resistant blanket. Place a working fire
extinguisher next to a welder.
• Do not weld containers, fuel tanks, or
pipes that contain or have contained
flammable substances. Welding of
