Thermal Arc 155 SE, Руководство пользователя

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Notice NOT 020
THERMAL ARC 155 SE
Rev : 02
Date : 25/10/06
SAFETY
USER’S MANUAL
Page
8/22
1.2.2.2. Maintenance of the arc welding equipment
The arc welding equipment should be routinely maintained according to the manufacturers recommendations. All
access and service doors and covers should be closed and properly fastened when the arc welding equipment is in
operation. The arc welding equipment should not be modified in any way, except for those changes and
adjustments covered in the manufacturer’s instructions. In particular, the spark gaps of arc striking and stabilising
devices should be adjusted and maintained according to the manufacturer’s recommendations.
1.2.2.3. Welding cables
The welding cables should be kept as short as possible and should be positioned close together, running at or
close to the floor level.
1.2.2.4. Equipotential bonding
Bonding of all metallic components in the welding installation and adjacent to it should be considered.
However, metallic components bonded to the work piece will increase the risk that the operator could receive an
electric shock by touching these metallic components and the electrode at the same time. The operator should be
insulated from all such bonded metallic components.
1.2.2.5. Earthing of the workpiece
Where the workpiece is not bonded to earth for electrical safety, nor connected to earth because of its size and
position, e.g. ships hull or building steelwork, a connection bonding the workpiece to earth may reduce emissions in
some, but not all instances. Care should be taken to prevent the earthing of the workpiece increasing the risk of
injury to users, or damage to other electrical equipment. Where necessary, the connection of the workpiece to
earth should be made by a direct connection to the workpiece, but in some countries where direct connection is not
permitted, the bonding should be achieved by suitable capacitance, selected according to national regulations.
1.2.2.6. Screening and shielding
Selective screening and shielding of other cables and equipment in the surrounding area may alleviate problems of
interference. Screening of the entire welding installation may be considered for special applications.
2. ELECTRIC SAFETY
2.1. CONNECTION OF THE WELDING POWER SOURCE TO THE NETWORK
Before connecting your equipment, you must check that:
-The meter, the safety device against over-currents, and the electric installation are compatible with the maximum
power and the supply voltage of the welding power source (refer to the instructions plates).
-The connection, either single-phase, or three-phase with earth can be effected on a socket compatible with the
welding power source cable plug.
If the cable is connected to a fixed post, the earth, if provided, will never be cut by the safety device against electric
shocks.
-The ON/OFF switch (if exists) situated on the welding power source, is turned off.