Arc Welding Safety Precautions - MAC TOOLS MW145 Owner's Manual

ARC WELDING SAFETY PRECAUTIONS
~a
WARNING
ARC WELDING
can
be hazardous.
PROTECT YOURSELF AND OTHERS FROM POSSIBLE SERIOUS INJURY OR DEATH. KEEP CHILDREN
AWAY. PACEMAKER WEARERS KEEP AWAY UNTIL CONSULTING YOUR DOCTOR.
Inwelding,
as
in
most jobs,
exposure
to
certain hazards
occurs.
Welding is safe when precautions
are
taken. The
safety
information
given
below is
only
a
summary of the
more
complete safety information that will be found in the
Safety
Standards listed on.the
next
page. Read and follow all
Safety
Standards.
HAVE ALL INSTALLATION, OPERATION, MAINTENANCE, AND REPAIR WORK PERFORMED ONLY BY
QUALIFIED PEOPLE.
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.
1.
Do
not
touch live electrical
parts.
2. Wear dry,
hole-free
insulating gloves
and
body protection.
3. Insulate yourself from work and ground using dry insulating
mats
or covers
big enough to
prevent
any
physical contact with
the work
or
ground.
4. Disconnect input
power or
stop
engine before installing
or
servicing
this equipment. Lockoutltagout input poweraccording
to
OSHA 29 CFR 1910.147
(see Safety Standards).
5. Properly
install and
ground
this equipment according
to
its
Owners
Manual and
national, state, and local codes.
6. Always verify the supply ground check and be
sure
that input
newer
cord around wire is orooerlv connected to around
terminal in disconnect box
or
that cord plug is connected to
a
properly grounded receptacle outlet.
7.
When
making input
connections, attach proper
grounding
conductor first double-check connections.
8.
Frequently inspect input powercord
for
damage
or
bare wiring
replace cord immediately if damaged bare wiring
can
kill.
9. Turn oft all
equipment
when
not
in
use.
10. Do not
use worn,
damaged, undersized,
or
poorly spliced
cables.
11.
Do
not drape cables
over
your
body.
12. If earth
grounding
of the
workpiece
is
required, ground it directly
with
a
separate
cable
do not
use
work
clamp
or
work cable.
13. Do
not
touch electrode if you
are
in
contact
with the
work,
ground,
or
another electrode from
a
different machine.
14. Use only
well-maintained
equipment. Repair
or
replace
damaged parts at
once.
Maintain unit
according to manual.
15. Wear
a
safety harness if working above floor level.
16. Keep
all
panels
and
covers
securely
in
place.
17. Clamp
work
cable with
good
metal-to-metal
contact to
workoiece
or
worktable
as near
the weld
as
oractical.
ARC RAYS
can
burn eyes and skin;
NOISE
can
damage hearing;
FLYING
SLAG OR SPARKS
can
injure
eyes.
Arc rays from the welding
process
produce intense
visible and invisible (ultraviolet and infrared)
rays
that
can
burn eyes and skin. Noise from
some processes
can
damage hearing. Chipping, grinding, and welds
cooling
throw off
pieces
of metal
or
slag.
FUMES AND GASES
can
be hazardous
to
your
health.
Welding produces
fumes and gases.
Breathing
these
fumes and gases
can
be hazardous
to
your health.
1. Keep your head out
of the fumes. Do
not
breathe the fumes.
2. If inside, ventilate the
area
and/or
use
exhaust at the
arc
to
remove
welding fumes and gases.
3. If ventilation is poor,
use an
approved air-supplied respirator.
4. Read the Material Safety
Data Sheets (MSDS5)
and the
manufacturers instruction for metals, consumables, coatings,
cleaners, and degreasers.
Wear
a
welding helmet fitted with
a
proper shade of filter
to
protect
your
face and
eyes
when welding
or
watching (see ANSI
Z49.1 and Z87.1 listed in Safety Standards).
Wear approved safety glasses with side shields.
Use protective
screens or
barriers to
protect
others from flash
and glare;
warn
others not to watch the
arc.
5. Wear protective clothing made from durable, flame-resistant
material (wool and leather) and foot protection.
5. Work in
a
confined space only if it is well ventilated,
or
while
wearing
an
air-supplied respirator. Always have
a
trained
watchperson nearby. Welding
fumes and gases
can
displace air
and lower the oxygen level
causing injury
or
death. Be
sure
the
breathing air is safe.
6. Do not weld in locations
near
degreasing, cleaning,
or
spraying
operations. The heat and rays of the
arc can
react with
vapors
to
form highly toxic and irritating
gases.
7. Do
not
weld
on
coated metals, such
as
galvanized, lead,
or
cadmium
plated
steel, unless the
coating
is removed from the
weld
area,
the
area
is well
ventilated,
and if necessary, while
wearing
an
air-supplied respirator.
The
coatings
and any metals
containing these elements
can
give off toxic fumes if welded.
NOISE
ARC RAYS
2.
1.
Use acoroved
ear
plugs
or ear
muffs if noise level is high.
3.
4.
CYLINDERS
can
explode
if
damaged.
4. Never drape
a
welding torch
over a gas
cylinder.
Shielding
gas
cylinders
contain gas under high
5. Never allow
a
welding electrode to touch any cylinder.
pressure.
If damaged,
a
cylinder
can
explode.
Since
6.
Never weld
on a
pressurized cylinder explosion will result.
gas
cylinders
are
normally
part
of the welding
7. Use
only correct
shielding
gas
cylinders, regulators, hoses, and
process, be
sure
to treat
them carefully.
fittings designed for the specific application; maintain them and
associated parts
in
good
condition.
1. Protect compressed
gas
cylinders
from excessive
heat,
8. Turn face away from valve outlet when opening cylinder valve.
mechanical shocks, slag,
open
flames,
sparks.
and
arcs.
9. Keep protective cap in place
over
valve
except
when cylinder is
2. Install cylinders
in
an
upright position by securing
to
a
stationary
in
use or
connected for
use.
support
or
cylinder
rack
to prevent
falling
or
tipping.
10. Read and follow instructions
on
compressed
gas
cylinders,
3. Keep cylinders
away from any
welding
or
other electrical associatedequipment,andCGApublicationP-1 listed in Safety
circuits.
Standards.
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