Helvi UNITECH 328, Instruction Manual

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EN-2
• Wear dry gloves and clothing. Insulate
yourself from the work piece or other parts of
the welding circuit.
• Make sure the main line is properly grounded.
• Do not coil the torch or the ground cables
around your body.
• Never touch or come in physical contact with
any part of the input current circuit and wel-
ding current circuit.
Electric warning:
• Repair or replace all worn or damaged parts.
• Extra care must be taken when working in
moist or damp areas.
• Install and maintain equipment according to
local regulations.
• Disconnect power supply before performing
any service or repair.
• Should you feel the slightest electrical shock,
stop any welding immediately and do not use
the welder until the fault has been found and
corrected.
NOISE
Noise can cause permanent hearing loss.
Welding processes can cause noise levels that
exceed safe limits. You must protect your ears
from loud noise to prevent permanent loss of
hearing.
• To protect your hearing from loud noise, wear
protective ear plugs and/or ear muffs.
• Noise levels should be measured to be sure
the decibels (sound) do not exceed safe levels.
ELECTROMAGNETIC COMPATIBILITY
Before installing your welder, carry out an inspection
of the surrounding area, observing the following
guidelines:
• Make sure that there are no other power sup-
ply cables, control lines, telephone leads or
other equipment near the unit.
• Make sure that there are no radio receivers,
television appliances, computers or other
control systems near the unit.
• People with pace-maker or hearing-prosthe-
sis should keep far from the power source.
! In particular cases special protection
measures may be required.
Interference can be reduced by following these sug-
gestions:
• If there is interference in the power source
line, an E.M.T. filter can be mounted between
the power supply and the power source;
• The output cables of the power source should
be not too uch long, kept together and con-
nected to ground;
• After the maintenance all the panels of the po-
wer source must be securely fastened in place.
PROTECTIVE WELDING GASES
Shielding gas cylinders contain gas under
high pressure. If damaged, a cylinder can
explode. Treat them carefully.
• These welders use only inert or non-flammable
gases for welding arc protection. It is important
to choose the appropriate gas for the type of
welding being performed;
• Do not use gas from unidentified cylinders or
damaged cylinders;
• Do not connnect the cylinder directly to the wel-
der, use a pressure regulator;
• Make sure the pressure regulator and the gau-
ges function properly;
• Do not lubricate the regulator with oil or grea-
se;
• Each regulator is designed for use with a spe-
cific gas. Make sure the regulator is designed
for the protective gas being used;
• Make sure that the cylinder is safely secured
tightly to the welder with the chain provided.
• Never expose cylinders to excessive heat, spar-
ks, slag or flame;
• Make sure that the gas hose is in good condi-
tion;
• Keep the gas hose away from the working area.