Panasonic YD-350GL4 Operating Instructions Manual page 6

3 Do not use undersized, worn, damaged or bare
（ ）
wired cables.
4 Connect cables completely and insulate connection
（ ）
parts.
5 Keep all cases, panels and covers securely in place.
（ ）
6 Do not handle the welding power source with torn or
（ ）
wet gloves.
7 Wear safety harness in case of working above floor
（ ）
level.
8 Turn off all equipment when not in use.
（ ）
9 Perform periodic checks without fail and repair or
（ ）
replace any damaged parts before using the power
source.
10 In case of AC arc welding in a confined area or
（ ）
above floor level, check related national, state and
local codes and regulations for any special treatment
and comply with it if any.
Ventilation and protective equipment
Oxygen deficit, fume and gas generated
during welding can be hazardous.
1 When conducting welding in the bottom of the tank,
（ ）
boiler or hold as well as legally-defined sites, use a
local exhauster specified by the applicable laws and
regulations (occupational
regulation, rules on preventing suffocation or etc.) or
wear protective breathing gear.
2 To prevent dust injury or poisoning by the fume
（ ）
generated during welding, use a local exhauster
specified by the applicable law (occupational safety
and health regulation, rules on preventing injury by
inhaled dust or etc.), or wear protective breathing
gear.
3 When conducting welding in a confined area, make
（ ）
sure to provide sufficient ventilation or wear
protective breathing gear and have a trained
supervisor observe the workers.
4 Do not conduct welding 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.
5 When welding a coated steel plate, provide sufficient
（ ）
ventilation or wear protective breathing gear.
(Welding of coated steel plates generates toxic fume
and gas.)
Against fire, explosion or blowout
Observe the following cautions to prevent
fires explosion or blowout.
1 Remove any combustible materials at and near the
（ ）
work site to prevent them from being exposed to the
spatter. If they cannot be relocated, cover them with
a fireproofing cover.
2 Do not conduct welding near combustible gases.
（ ）
About safety
safety and health
Conducting
2
3 Do not bring the hot base metal near combustible
（ ）
materials immediately after welding.
4 When welding a ceiling, floor or wall, remove all
（ ）
flammables including ones located in hidden places.
5 Properly connect cables and insulate connected
（ ）
parts. Improper cable connections or touching of
cables to any electric current passage of the base
metal, such as steel beam, can cause fire.
6 Connect the base metal cable at a section closest to
（ ）
the welding part.
7 Do not weld a sealed tank or a pipe that contains a
（ ）
gas.
8 Keep a fire extinguisher near the welding site for an
（ ）
emergency.
Installing shielding (curtain etc.)
Arc flash, flying spatter and slugs generated
during welding can damage your eyes, skin
and hearing.
1 When welding or monitoring welding, wear safety
（ ）
glasses with sufficient light blocking performance or
use a protective mask designed for welding
operation.
2 Wear protective glasses to protect your eyes from
（ ）
spatter or slugs.
3 When welding or monitoring welding, wear protective
（ ）
clothes designed for welding operation, such as
leather gloves, leg cover and leather apron, and also
wear long-sleeve shirts.
4 Install a protective curtain around the welding
（ ）
manipulator site to prevent the arc flash from
entering the eyes of people in the surrounding area.
Gas cylinder and gas flow regulator
Overturn of gas cylinder and blowout of
gas flow regulator can cause injury.
1 The gas cylinder must be handled properly
（ ）
according to the applicable law and in-house
standards.
2 Use the gas flow regulator that is supplied or
（ ）
recommended by our company.
3 Read the instruction manual of the gas regulator
（ ）
prior to using it, observe the cautions in the manual
4 Secure the gas cylinder to a dedicated gas cylinder
（ ）
stand.
5 Do not expose the gas cylinder to high temperature.
（ ）
6 When opening the valve of the gas cylinder, do not
（ ）
bring your face close to the discharge outlet.
CAUTIONS