5
CALIBRATION CASE CALIWELD
EN
WELDING FUMES AND GASES
The fumes, gases and dust created when welding are a health hazard. It is required to ensure adequate ventilation
or extraction for fumes and gases. Using an air fed welding helmet is recommended in case of insufficient
ventilation in the workplace.
Check that the extraction is effective by checking it against recommended safety standards.
Caution, welding in small spaces requires surveillance from a safe distance. In addition, the welding of certain materials containing
lead, cadmium, zinc, mercury or beryllium may be particularly harmful.
Do not weld in areas where grease or paint are stored.
GAS CYLINDERS
Gas leaking from the cylinders can lead to suffocation if present in high concentrations around the work area.
Transport must be done safely: cylinders closed and device switched off. They must be stored vertically and held
by a support to limit the risk of falling.
The same recommendations apply for the storage of the cylinders. They must also be stored in open and ventilated
areas.
Gas cylinders must be stored in an open or ventilated area. The cylinders must be in a vertical position and fastened to a support
or trolley.
Close the cylinder in between using it. Be wary of temperature variations and sun exposure.
The cylinder must not be in contact with a flame, electric arc, torch, earth clamp or all other sources of heat.
Always keep gas cylinders away from electrical circuits and therefore never weld a pressurised cylinder.
Be careful when opening the valve of a cylinder, it is necessary to remove the valve head and to make sure that the correct gas mix
is used.
ELECTRICAL SAFETY
The electrical mains used must have an earth terminal. Follow the fuse rating recommended in the table.
An electrical shock can directly or indirectly cause serious and potentially deadly accidents.
Do not make physical contact with live parts inside or outside the machine when it is powered such as the torch, earth clamp,
electrodes and cables, as they are part of the welding circuit.
Before opening the device, it is imperative to disconnect it from the mains and to wait for 2 minutes in order for the capacitors to
release the energy.
Do not touch the torch or electrode holder and the earth clamp at the same time.
Make sure to replace the torches and cables if they are damaged. This should be done by a qualified and authorised technician.
The dimensioning of the accessories should be sufficient.
Always wear dry clothes which are in good condition in order to be insulated from the electrical circuit. Wear insulating shoes,
regardless of the environment in which you work in.
