Electric System; Fire Prevention - Helvi PC EVO 76 Manual De Instrucciones

Figure 8
Using the arc welding and cutting equipment requires
strict respect for safety conditions regarding electric
currents. Make sure that no metallic parts accessible
to the operators may come into direct or indirect
contact with a phase conductor or with the neutral
of the power grid.
All electrode holders and torches used must be in
good conditions. Do not coil the cables around your
body and never point the torchs to other people
(Fig. 9).
Figure 9
Make sure that no power cables from other ap-
pliances, control lines or phone cables are near the
generators.
Any other electric equipment in the welding or cutting
area must be in conformity with the corresponding
EMC regulation.
Caution: Access to the the working area
and near the welding/cutting operation
generators is forbidden to anyone wearing
pacemakers or other such electric devices.
At least once every 6 months make sure that all
electric appliances and accessories are well insulated.
Contact your supplier for more information on the
maintenance and repair of such equipment.
Warning: Never touch the welding cable or
the electrode and the piece which is being
welded at the same time.

ELECTRIC SYSTEM

Any intervention on electrical and electronic
equipment must be entrusted to qualified technicians
capable of performing such operations.
Prior to connecting your appliance to the power grid,
make sure that the counter, the overload and short-
circuit protection devices, the sockets, the plugs and
the electric system as a whole are compatible with
the maximum power of the appliance and its voltage
(please check the information on the plate) and in
conformity with the norms and regulations in force.
The ground single-phase or three-phase connection
(yellow/green cable) must be protected by a medium
or high-intensity differential-residual current device
(sensitivity between 1 and 30 mA).
If the cable is connected, the earth cable (when
present) must not be interrupted by the protection
device against electric shock. The switch, if present,
must be at "O"; the power cable, if not supplied,
must be of the harmonized type.
Ground all metal parts near the operator, using
cables that are thicker or as thick as the welding
cables.
The protection class of the appliance is IP22S, which
means it prevents:
- manual contact with internal parts in high tempe-
rature, which are moving or live;
- the introduction of solid bodies with more than 12
mm of diameter;
- protection against rain with maximum inclination
of 15°.

FIRE PREVENTION

The working area must be in conformity with safety
regulations. This means that fire extinguishers must
be installed, compatible with the type of fire which
may happen.
The ceiling, the floor and the doors must be non-
flammable. All combustible material must be moved
away from the workplace (Fig. 10). If this is not
possible, cover it with a fireproof cover.
Figure 10
Before you start welding or cutting, ventilate all areas
that are potentially flammable.
Do not use the equipment in places with significant
concentrations of dust, flammable gas or combusti- ble liquid vapor.
The generator must be placed on solid, smooth floor,
and should never lean against walls.
Do not weld or cut containers filled with gasoline,
lubricant or other flammable substances.
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