Masterweld MW2040, Instructions For Use And Maintenance Manual, Page: 5 / 29

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most dangerous. Therefore, protect whole your body
using the personal protective equipment for welders.
Try to keep the radiation level at welding as low as
possible (by the use of protective screens, black-
painted welding box, etc.).
Protect your eyes with a welder's hood provided
with a protective dark glass visor. In your selection of
a suitable hood, pay the attention to the filter pa-
rameters and in particular - its darkening speed. The
protection degree must be compatible with the
relevant work character. Unsatisfactory dark glass
must be removed immediately.
Do not look at the arc without the proper dark visor
or hood.
Do not start with the welding before you are sure
that all people in your neighbourhood are suitably
protected.
Do not use contact lenses while welding. There is
a danger of sticking the lens to the cornea.
EXPLOSION AND FIRE
HAZARD

Functional and
regularly inspected
fire-extinguishing equipment must close to the
working site while welding.

Fire may be induced by electric charges, molten
metal spraying and chippings of small particles
or hot sparks heated at welding.

No flammable materials/substances are allowed
in the welding place neighbourhood.

Never weld any containers that previously con-
tained flammable liquids.

Never weld close to an autogenous welding set
at work.

Before potential contact with combustible ma-
terials, allow for the weldment proper cooling.

Do not weld in rooms with flammable vapour or
explosive dust concentrations.

Be sure that your pockets are emptied of com-
bustibles before welding.

Check the workplace again thirty minutes after
the welding completion. Be aware of the fact
that fire might be induced from sparks even
several hours after the welding completion.
AVOIDANCE OF FLAMES AND EXPLO-
SIONS

Remove all combustibles from
the workplace.

Do not weld close to inflammable materials or
liquids, or in environments saturated with ex-
plosive gasses.

Do not wear clothing impregnated with oil and
grease, as sparks can trigger off fame’s.

Do not weld on recipients that have contained
inflammable substances, or on materials that
can generate toxic and inflammable vapours
when heated.

Do not weld a recipient without first determin-
ing what it has contained. Even small traces of
an inflammable gas or liquid can cause an explo-
sion.

Never use oxygen to degas a container.

Avoid gas-brazing with wide cavities that have
not been properly degassed.

Keep a fire extinguisher close to the workplace.

Never use oxygen in a welding torch; use only
inert gases or mixtures of these.
HANDLING AND STOCKING COM-
PRESSED GASES

The valve of the inert gas pressure
cylinder should be completely
open while used; after the use, or while han-
dling them, close it tightly.

Always avoid contact between
cables carrying welding current
and compressed gases cylinder
and their storage systems. Do not
attempt to refill compressed gas cylinders, al-
ways use the correct pressure reduction regula-
tors and suitable base fined with the correct
connectors.

For further information consult the safety regu-
lation governing the use of welding gases.
RISKS DUE TO ELECTROMAGNETIC FIELDS

The magnetic field generated by the machine
can be dangerous to people fitted with pace-
makers, hearing aids and similar equipment.
Such people must consult their doctor before
going near a machine in operation.

Do not go near a machine in operation with
watches, magnetic data supports and timers etc.
These articles may suffer irreparable damage
due to the magnetic field.

This equipment complies with the set protection
requirements and directives on electromagnetic
compatibility (EMC). In particular, it complies
with the technical prescriptions of the EN 50199
standard and is foreseen to be used in all indus-
trial spaces and not in spaces for domestic use.
If electromagnetic disturbances should occur, it
is the user’s responsibility to resolve the situa-
tion with the technical assistance of the produc-
er. In some cases the remedy is to schormare
the welder and introduce suitable filters into the
supply line.
ATTENTION, REVOLVING GEARING