Miller LMSW-52, Руководство пользователя

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OM-716 Page 1
SECTION 1 − SAFETY PRECAUTIONS - READ BEFORE USING
spotom _7/05
Y Warning: Protect yourself and others from injury — read and follow these precautions.
1-1. Symbol Usage
Means Warning! Watch Out! There are possible hazards
with this procedure! The possible hazards are shown in
the adjoining symbols.
Y Marks a special safety message.
.
Means “Note”; not safety related.
This group of symbols means Warning! Watch Out! possible
ELECTRIC SHOCK, MOVING PARTS, and HOT PARTS hazards.
Consult symbols and related instructions below for necessary actions
to avoid the hazards.
1-2. Resistance Spot Welding Hazards
Y 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 1-5. Read and follow all
Safety Standards.
Y
Only qualified persons should install, operate, maintain, and
repair this unit.
Y During operation, keep everybody, especially children, away.
SPOT WELDING can cause fire or explosion.
Sparks can fly off from the welding arc. The flying
sparks, hot workpiece, and hot equipment can
cause fires and burns. Accidental contact of elec-
trode to metal objects can cause sparks, explosion,
overheating, or fire. Check and be sure the area is safe before doing
any welding.
D Remove all flammables within 35 ft (10.7 m) of the weld. If this is not
possible, tightly cover them with approved covers.
D Do not spot weld where flying sparks can strike flammable material.
D Protect yourself and others from flying sparks and hot metal.
D Be alert that welding sparks can easily go through small cracks and
openings to adjacent areas.
D Watch for fire, and keep a fire extinguisher nearby.
D Do not weld on closed containers such as tanks, drums, or pipes,
unless they are properly prepared according to AWS F4.1 (see
Safety Standards).
D Do not weld where the atmosphere may contain flammable dust,
gas, or liquid vapors (such as gasoline).
D Remove any combustibles, such as a butane lighter or matches,
from your person before doing any welding.
D
After completion of work, inspect area to ensure it is free of sparks,
glowing embers, and flames.
D
Do not exceed the equipment rated capacity.
D Use only correct fuses or circuit breakers. Do not oversize or
bypass them.
D Follow requirements in OSHA 1910.252 (a) (2) (iv) and NFPA 51B
for hot work and have a fire watcher and extinguisher nearby.
Touching live electrical parts can cause fatal shocks
or severe burns. The input power circuit and
machine internal circuits are also live when power is
on. Incorrectly installed or improperly grounded
equipment is a hazard.
ELECTRIC SHOCK can kill.
D Do not touch live electrical parts.
D Wear dry, hole-free insulating gloves and body protection.
D 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, grat-
ings, or scaffolds; when in cramped positions such as sitting,
kneeling, or lying; or when there is a high risk of unavoidable or acci-
dental contact with the workpiece or ground. For these conditions,
see ANSI Z49.1 listed in Safety Standards. And, do not work alone!
D Disconnect input power before installing or servicing this equip-
ment. Lockout/tagout input power according to OSHA 29 CFR
1910.147 (see Safety Standards).
D Properly install and ground this equipment according to this manual
and national, state, and local codes.
D Always verify the supply ground − check and be sure that input pow-
er cord ground wire is properly connected to ground terminal in
disconnect box or that cord plug is connected to a properly
grounded receptacle outlet.
D When making input connections, attach the grounding conductor
first − double-check connections.
D Keep cords dry, free of oil and grease, and protected from hot metal
and sparks.
D Frequently inspect input power cord and ground conductor for dam-
age or bare wiring − replace immediately if damaged − bare wiring
can kill. Check ground conductor for continuity.
D Turn off all equipment when not in use.
D For water-cooled equipment, check and repair or replace any leak-
ing hoses or fittings. Do not use any electrical equipment if you are
wet or in a wet area.
D Use only well-maintained equipment. Repair or replace damaged
parts at once.
D Wear a safety harness if working above floor level.
D Keep all panels, covers, and guards securely in place.
Very often sparks fly off from the joint area.
D Wear approved face shield or safety goggles
with side shields.
FLYING SPARKS can cause injury.
D
Wear protective garments such as oil-free, flame-resistant leather
gloves, heavy shirt, cuffless trousers, high shoes, and a cap.
Synthetic material usually does not provide such protection.
D
Protect others in nearby areas by using approved flame-resistant or
noncombustible fire curtains or shields. Have all nearby persons
wear safety glasses with side shields.