Section 1 - Safety Precautions - Read Before Using; Symbol Usage; Arc Welding Hazards - Miller SRH-444 Manuel Du Propriétaire

SECTION 1 - SAFETY PRECAUTIONS – READ BEFORE USING
Protect yourself and others from injury - read and follow these precautions.
1-1. Symbol Usage
DANGER! - Indicates a hazardous situation which, if not
avoided, will result in death or serious injury. The possible
hazards are shown in the adjoining symbols or explained
in the text.
Indicates a hazardous situation which, if not avoided, could
result in death or serious injury. The possible hazards are
shown in the adjoining symbols or explained in the text.
NOTICE - Indicates statements not related to personal injury.
1-2. Arc Welding Hazards
The symbols shown below are used throughout this manual
to call attention to and identify possible hazards. When you
see the symbol, watch out, and follow the related instructions
to avoid the hazard. The safety information given below is
only a summary of the more complete safety information
found in the Safety Standards listed in Section 1-7. Read and
follow all Safety Standards.
Only qualified persons should install, operate, maintain, and
repair this unit.
During operation, keep everybody, especially children,
away.
ELECTRIC SHOCK can kill.
Touching live electrical parts can cause fatal shocks or
severe burns. The electrode and work circuit is
electrically live whenever the output is on. The input power circuit
and machine internal circuits are also live when power is on. In
semiautomatic or automatic wire welding, the wire, wire reel, drive
roll housing, and all metal parts touching the welding wire are
electrically live. Incorrectly installed or improperly grounded
equipment is a hazard.
Do not touch live electrical parts.
•
Wear dry, hole-free insulating gloves and body protection.
•
Insulate yourself from work and ground using dry insulating mats
•
or covers big enough to prevent any physical contact with the
work or ground.
Do not use AC output in damp areas, if movement is confined,
•
or if there is a danger of falling.
Use AC output ONLY if required for the welding process.
•
If AC output is required, use remote output control if present on
•
unit.
• Additional safety precautions are required when any of the
following electrically hazardous conditions are present: in damp
locations or while wearing wet clothing; on metal structures such
as floors, gratings, or scaffolds; when in cramped positions such
as sitting, kneeling, or lying; or when there is a high risk of
unavoidable or accidental contact with the workpiece or ground.
For these conditions, use the following equipment in order
presented: 1) a semiautomatic DC constant voltage (wire)
welder, 2) a DC manual (stick) welder, or 3) an AC welder with
reduced open-circuit voltage. In most situations, use of a DC,
constant voltage wire welder is recommended. And, do not work
alone!
Disconnect input power or stop engine before installing or
•
servicing this equipment. Lockout/tagout input power according
to OSHA 29 CFR 1910.147 (see Safety Standards).
☞
Indicates special instructions.
This group of symbols means Warning! Watch Out! ELECTRIC
SHOCK, MOVING PARTS, and HOT PARTS hazards. Consult
symbols and related instructions below for necessary actions to
avoid the hazards.
Properly install and ground this equipment according to its
•
Owner's Manual and national, state, and local codes.
Always verify the supply ground - check and be sure that input
•
power cord ground wire is properly connected to ground terminal
in disconnect box or that cord plug is connected to a properly
grounded receptacle outlet.
When making input connections, attach proper grounding
•
conductor first - double-check connections.
Keep cords dry, free of oil and grease, and protected from hot
•
metal and sparks.
Frequently inspect input power cord for damage or bare wiring
•
- replace cord immediately if damaged - bare wiring can kill.
Turn off all equipment when not in use.
•
Do not use worn, damaged, undersized, or poorly spliced
•
cables.
Do not drape cables over your body.
•
If earth grounding of the workpiece is required, ground it directly
•
with a separate cable.
Do not touch electrode if you are in contact with the work,
•
ground, or another electrode from a different machine.
Do not touch electrode holders connected to two welding
•
machines at the same time since double open-circuit voltage will
be present.
• Use only well-maintained equipment. Repair or replace
damaged parts at once. Maintain unit according to manual.
Wear a safety harness if working above floor level.
•
Keep all panels and covers securely in place.
•
• Clamp work cable with good metal-to-metal contact to
workpiece or worktable as near the weld as practical.
Insulate work clamp when not connected to workpiece to
•
prevent contact with any metal object.
Do not connect more than one electrode or work cable to any
•
single weld output terminal.
SIGNIFICANT DC VOLTAGE exists in
inverter-type welding power sources after
removal of input power.
Turn off inverter, disconnect input power, and discharge input
capacitors according to instructions in Maintenance Section before
touching any parts.
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