Panasonic YF-0201Z5HGF, Operating Instructions Manual, Page: 4 / 38

Safety precautions
4
1. Safety precautions
Welding power source
(1) Never use the welding power source for other than weld-
ing purpose. (e.g. Never attempt to use the welding
power source for pipe thawing.)
(2) It is very important to comply with all instructions, safety
warnings, cautions and notes mentioned. Failure to do so
can result in serious injury or even death.
(3) Work of driving source at the input side, selecting work
site, handling, storage and piping of high pressure gas,
storage of welded products and also disposal of waste
should be performed according to the operating instruc-
tion and national, state and local codes and regulations.
(4) Prevent any unauthorized personnel to enter in and
around the welding work area.
（ 5 ） Magnetic fields from high currents can affect pace-
maker operation. If you wear a pacemaker, consult
your physician before going near welding opera-
tions.
(6) Only educated and/or skilled persons who well under-
stand this welding power source should install, operate,
maintain and repair the unit.
(7) Only educated and/or skilled persons who well under-
stand the operating instruction of the unit and are capa-
ble of safe handling should perform operation of the unit.
Against electric shock
(1) Do not touch any charged parts without secondary con-
ductors.
（
2
）
Grounding of the case of the welding power and
base metal or a jig electrically connected to the base
metal must be performed by educated and/or skilled
persons.
(3) Before installation or maintenance work, turn off power at
the power box, wait it for at least five minutes to dis-
charge capacitors. Significant voltage may exist on
capacitors after turning off power at the power box so it is
imperative to check to make sure that no charged voltage
present at capacitors before touching any parts.
(4) Do not use undersized, worn, damaged or bare wired
cables.
(5) Connect cables completely and insulate connection
parts.
(6) Keep all cases, panels and covers securely in place.
(7) Do not handle the welding power source with torn or wet
gloves.
(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 ） As for coolant water, use quality water with few sed-
iment and 5000
Ω
•cm or more in resistance.
(11) Use big enough size of cables and hoses for applied
power and pressure.
Space between electrodes
(1) Do not put your hands, fingers or arms in the gap
between electrodes, or part of your body may be caught
by the electrodes resulting in injury or bone fracture.
(2) Prior to turning on power or supplying compressed air,
confirm safety around the welding machine.
(3) Turn off all equipment including compressed air and cool-
ant water if not in use.
Against fire, 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.
(3) Do not bring the hot base metal near combustible materi-
als immediately after welding.
(4) 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.
(5)
Keep a fire extinguisher near the welding site for an
emergency.
Observe the following instructions to prevent the
hazard.
Observe the following instructions to prevent
the hazard.
Observe the following instructions to
prevent injuries.
Observe the following cautions to prevent
fires explosion or blowout.
WARNINGS
Installing shielding (curtain etc.
（
1
）
When welding or monitoring welding, wear safety
glasses with sufficient light blocking performance or
use a protective mask designed for welding
operation.
(2) When welding or monitoring welding wear protective
closes designed for welding operation, such as leather
gloves, leg cover and leather apron, and also wear long-
sleeve shirts.
（ 3 ） Install a protective curtain around the welding
manipulator site to prevent the arc flash from
entering the eyes of people in the surrounding area.
（
4
）
Be sure to wear noise-proof protective equipment if
the noise level is high.
Welding flash, flying spatter, slugs, and
noise generated during welding can
damage your eyes, skin and hearing.
CAUTIONS