LGK-40/63IGBT OPERATOR’S MANUAL
2
Cautions
Arc and arc rays can hurt.
All performing welding workers ought to have health qualification from the authority
organization to prevent you and others from arc radiation and burn. It should be
prevented for children to enter into dangerous area as well.
Be careful reading the following important items and the welder safety byelaw from the
authority organization. Be sure that qualified professionals perform all installation,
maintenances and repair procedures.
1.Electric shock
：
The welding circuits are not insulated when welding. If you touch the
two output electrodes of the machine with your bare skin at the same time, it will
lead to electric shock, sometimes even fatal dangers. Users need to follow the items
below to avoid electric shocks:
If possible, lay some insulating materials, which are dry and large enough, in your working field.
Otherwise, use the automatic or semiautomatic welding machine, DC welding machine as possible
as you can.
Components in the automatic and semiautomatic welding machine such as the welding wire
reel, feed wheel, contact tip and welding head are all electric components. .
Always be sure the machine has been connected perfectly to the work piece with the work
cables and should be as close as possible to the working area.
The work piece should be grounded perfectly.
Make sure that the insulating material of the electrode holder, the grounding clamp, the
welding cable and the welding head are not affected by damp, mildewed or spoilt, and be replaced
momentarily.
Never dip the electrode in water for cooling.
Never touch electric components of two welding machines at the same time, because this
voltage is supposed to be two times of welding voltage while the grounding mode is not clear.
While working high above the ground or other places having the risk of falling, please be sure
to wear safety belt to avoid losing balance caused by electric shock.
2 Arc
：
Use an arc welding mask to protect your eyes and skin from sparks and the
rays of the arc, pay special attention to the filter glass, which must be conformable to
the national standard.
Use clothing made from durable flame-resistant material or sailcloth to protect your skin from
hurting by the arc rays.
Remind other nearby personnel before working lest arc rays hurt them by accident.
3 Fumes and Gases
：
Welding may produce fumes and gases hazardous to health.
Avoid breathing these fumes and gases. While working in limited room, use enough
ventilation and/or exhaust to keep fumes and gases away from the breathing zone, or
use the respirator. Do not weld at the same time when using of degreasing, cleaning or spraying
operations. The heat and rays of the arc can react with these gases to form phosgene, a highly toxic
gas,
Some protective gases used in welding might displace the oxygen in the air, and can lead to
Содержание LGK-40/63IGBT
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