C a u t i o n s
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 hurt or even
death.
Read and understand the manufacturer’s instructions for this equipment, and validate the health
certification of consumptive materials, make sure they are innocuous.
4 Spatter
: Spatter can cause fire or explosion.
Remove fire hazards from the welding area. Remember that spatter from welding can
easily go through small cracks and touch fire hazards. Protect all kinds of lines going though
welding area, including hydraulic lines in the wild.
Where compressed gases are to be used in the field, special precautions should be used to prevent
explosion.
When welding stops, make certain that no live part is touching the work piece or the work stage. Accidental
contact can create a fire hazard.
Do not weld containers or lines, which are not proved to be innocuous.
It is very dangerous to heat, cut or weld tanks or containers at entry holes. Does not start work until the
proper steps have been taken to insure that there is no flammable or toxic gas.
Spatter might cause burn. Wear leather gloves, heavy shirt, cuffless trousers, high shoes and a cap over your
hair to prevent from burning by spatter. Wear the ear shield when performing sideways or face up welding.
