NewArc R5000 CCCV Instruction Manual page 4

SECTION 1 — SAFETY
Fire and Explosions
Pay attention to fire and safety regulations in force at
the welding site.
• Remove all flammable or combustible materials from
the welding area and the immediate vicinity.
• Suitable fire fighting equipment must always be present
where welding is carried out.
• Be aware that a fire risk is present for a considerable
time after welding operations have ceased because of
sparks and hot slag etc. Take suitable precautions
when you have finished welding.
• Take care when welding containers that have held
flammable or combustible material, these should have
been specially cleaned before being given to the
welder. If in doubt do not weld them.
Burns
Be aware that burns may be the result of the heat in-
volved in the welding process, welding spatter or the
Ultra Violet Radiation given off by the arc itself.
• Wear suitable fireproof clothing over all your body.
• Wear protective gauntlets designed for welding use.
• Wear a welding facemask fitted with the correct filter
shade suitable for the current at which you will be weld-
ing.
• Avoid wearing oily or greasy clothing as a spark may
ignite them. Where possible ensure that a suitable first
aid kit and a first aid person qualified in the treatment
of burns are available nearby.
Fumes
Welding operations give off harmful fumes that are
hazardous to your health.
• Make sure the welding area is well ventilated. Use suit-
able fume extractors or exhaust fans if necessary.
• If the ventilation is not suitable then breathing appara-
tus may have to be used.
• Do not weld plated metals or metals which contain
Lead, cadmium, Zinc, Mercury or Beryllium unless you
are wearing suitable breathing apparatus.
Electric Shock
• Do not touch live electrical parts.
• Do not work in wet or excessively humid areas and do
not site the unit on a wet surface.
• Avoid touching the work piece whilst welding.
• Do not use the unit without the protective cover.
• Keep your clothing and body dry.
The safe handling of gas cylinders
The R4000/R5000 uses argon when TIG welding using
the TIG300. This is an inert gas and can displace oxy-
gen in the atmosphere leading to asphyxiation.
• Gas cylinders are under pressure and can explode if
punctured. Please ensure the cylinder is secured in a
stable location, away from any heat source or potential
mechanical damage.
• The cylinder must be securely fastened to a wall or
placed in a specially designed cylinder carrier.
• Do not use gas cylinders whose contents you are unsure
of.
• Do not try to directly connect a gas cylinder to Newarc
equipment without using a pressure-reducing regulator
designed for use with argon.
• Always install and use pressure regulators in accor-
dance with the manufacturers instructions.
• It is advisable, when attaching the regulator to the gas
bottle, to briefly turn on the bottle valve to expel any for-
eign objects that may be present. These may later block
the solenoid valve of the machine if not dealt with. Turn
your face away from the bottle valve when undertaking
this action.
• Check the gas cylinder, pressure regulator and gas
hoses regularly for leaks and discard any suspect item.
• Always turn off the valve on the gas cylinder when you
have finished welding.
Further information is available in publication HSG118
'The safe use of compressed gases in welding, flame
cutting and allied processes', which may be obtained
from the Health & Safety
Welding and earth return cables
• Earth return and electrode holder cables must have a
cross sectional area of at least 35mm
• Only use copper cables, the use of Aluminium cables
may have a detrimental effect on the performance of the
machine.
• Regularly inspect welding cables and connectors for
wear abrasion and corrosion. Corroded cables and con-
nectors may overheat and become a fire hazard.
• Ensure that all welding connectors are fully mated, the
connectors should be pushed fully home and then turned
clockwise to lock. If the connectors are not mated fully
they may overheat and become a fire hazard.
• If possible, fasten the earth return clamp directly to the
job to be welded and ensure that the surface is free from
rust and paint.
R5/4000 CCCV
Executive.
2
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4