About Safety; Safety Precautions; Safety Instructions That Must Be Observe - Panasonic YD-350GL4 Operating Instructions Manual

1. About safety
1.1 Safety precautions
Read this manual carefully to use the machine properly.
The cautions mentioned in this manual and on the
product are important to operate the machine properly
and prevent hazardous situation and damage to you and
other personnel.
This document classifies all of these hazardous
conditions into three levels, namely Danger, Warning or
Warning Signal
symbol phrase
Danger
Warning
Caution
"Serious personal injury" refers to loss of eyesight, burns
(high-temperature and low-temperature burn), electrical
shock, bone fractures and gas poisoning, as well as those
that leave after-effects, which require hospitalization or
necessitate medical treatment for an extended period of
time. "Medium-level and light personal injury" refers to
1.2 Safety instructions that must be observe
Welding power source
Observe the following instructions to prevent
the hazard.
1 Never use the welding power source for other than
（ ）
welding purpose.
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 instruction and national, state and local
codes and regulations.
4 Prevent any unauthorized personnel to enter in and
（ ）
around the welding work area.
Description
A hazardous accident including death
or serious personal injury is imminent, if
directions are not followed carefully.
The potential for a hazardous accident
including death or serious personal
injury is high, if directions are not
followed carefully.
The potential for hazardous accident
including medium-level or light personal
injury and/or the potential for property
damage to the equipment are high if,
directions are not followed carefully.
WARNINGS
(e.g. Never attempt to use the

About safety

Caution, and indicates these levels by using symbols.
Those Dangers, Warnings, Cautions as well as
Mandatory Actions and Prohibitions mentioned must be
followed without fail. It is also important to ensure that
equipment functions correctly at all times. * The warning
symbols and signal phrases are also used on the warning
labels attached on the machine.
Warning
symbol
The above warning symbols are commonly used.
burns, electrical shock and injuries which do not require
hospitalization or necessitate medical treatment for an
extended period of time. "Property damage" refers to
extensive damage to the surrounding items and
equipment.
5 Only educated and/or skilled persons who well
（ ）
understand this welding power source should install,
operate, maintain and repair the unit.
6 Only educated and/or skilled persons who well
（ ）
undersand the operating instruction of the unit and
are capable of safe handling should perform
operation of the unit.
Against electric shock
Observe the following instructions to prevent
the hazard.
1 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.
2 Before installation or maintenance work, turn off
（ ）
power at the power box, wait it for at least five
minutes to discharge 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.
1
Signal
Description
phrase
Action which MUST be
Mandatory
performed without fail,
Action
such as grounding.
Action which MUST
Prohibition
NOT be performed.