1. Safety Precautions
WMD078TE0PAA07
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(11) The welding power source must be
grounded and the work must be grounded in
accordance with ANSI Z49.1 (For North
America).
Ventilation and Protective Equipment
(1) Provide sufficient ventilation or wear
breathing equipment specified by applicable
laws (occupational health and safety and
regulations, ordinance on the prevention of
oxygen deficiency and similar rules).
(2) Use a local exhauster specified by the applica-
ble law (occupational safety and health regu-
lation, rules on preventing injury by inhaled
dust or etc.) or wear a protective breathing
gear. If a protective breathing gear is used, it
is recommended to use one with an electric
fan with high protection performance.
(3) When welding in the bottom, such as in a
tank, boiler and the hold of a ship, use a local
exhauster or wear breathing equipment spec-
ified by the applicable laws and regulations.
(4) When welding in a confined area, make sure
to provide sufficient ventilation or wear
breathing equipment and have a trained
supervisor observe the workers.
(5) Do not weld at a site where degreasing,
cleaning or spraying is performed. Welding
near the area where any of these types of
work is performed can generate toxic gases.
(6) When welding a coated steel plate, provide
sufficient ventilation or wear protective
breathing gear. (Welding of coated steel
plates generates toxic fume and gas.)
(7) Never ventilate with oxygen. Refer to ANSI
Z49.1 (For North America).
Fire, Explosion and Blowout Prevention
(1) Remove any flammable materials in and
around the work site to prevent exposure of
such flammable materials to spattering. If
they cannot be relocated, cover them with a
fireproof cover.
(2) Do not conduct welding near flammable
gases. Do not place the welding power
source near flammable gases, otherwise,
such gases may catch fire from a spark of
electricity inside the welding power source as
it is electric equipment.
(3) Do not bring hot base metal, such as a piece
immediately after welding or cutting, near
flammable materials immediately after weld-
ing.
(4) When welding a ceiling, floor or wall, remove
all flammable materials, including ones
located in hidden places.
(5) Wire the cables correctly and connect them
tightly. Insulate the connected parts surely so
that no exposed conductive part touches the
cases or housings. (Poor cable connection or
incomplete current path on the base metal
side, such as steel, if any, can cause fire due
to the heat generated by energization.)
(6) Connect the base metal cable as close to the
welding position as possible. (If not, unex-
pected current path may be created, which
can cause fire due to the heat generated by
energization.)
(7) Do not weld a sealed tank or a pipe that con-
tains gas.
(8) Keep a fire extinguisher near the welding site
in case of an emergency.
No Disassembling/Modification
(1) Contact a Panasonic sales representatives for
repair work.
(2) Follow the instructions in the operating
instructions for any required inspection of the
inside of the product.
Installing Shielding (Curtain etc.)
(1) When welding or monitoring welding operation,
wear safety glasses with sufficient light blocking
structure or use a protective mask designed for
welding.
Oxygen deficit, fume and gas
generated during welding can be
hazardous.
Observe the following cautions to
prevent fires explosion or blowout.
Unauthorized disassembling or
modification can cause fire, electric
shock or breakdown.
CAUTION
Arc flash, flying spatter slugs and
noise generated during welding can
damage your eyes, skin and hearing.
