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G. Security measures
G.1 - Safety devices installed on the welding machine
The welding machine is equipped with a circuit for measuring the contact
resistance, which enables the flow of the welding current only when the value of
resistance is such as to reinforce a good contact between the pin to be welded, and
ground plate. In this way, during the phases of insertion of the pin in the gun or
manipulation of the same, away from the surface intended to receive the stud
welding and connected to the other pole of the welding circuit, the exposed metal
parts of the gun, are not in dangerous voltage.
During the step of positioning of the pin (pin contact), there is circulation of low
current is not dangerous for humans. In any case, always use suitable clothing to
protect themselves from the danger of electrocution, especially if in the presence of
moisture.
The moment in wich the button is pressed to start the welding cycle,
resistance of the welding circuit is cheked, if this is lower than that provided by the
manufacturer is enabled by the passage of the arc current, which causes the welding
of the stud.
Are denied access to the internal parts of the welding leads, with power plug
inserted.
In case of use the welding machine is set in place appropriate gloves required PPE
for 'electrical insulation', DPI ear protection (earmuffs or earplugs) and DPI eye
(glasses).
MAKE SURE:
The electrical power supply of the welding machine equipped with differential
switch with high sensitivity (
system, protection against indirect contact.
On welding unit are affixed to the necessary warning information, as specified in
the following diagram.
=
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30 mA), coordinated with an efficient earthing
N
1
6
1
6
the
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