Safety Precautions; Read Before Using; Symbol Usage - Miller XMT 304 Owner's Manual

SECTION 1
-
SAFETY PRECAUTIONS
-
READ BEFORE USING
1-1. Symbol Usage
som
_nd_7/02
a Means Warning!
Watch Out There
are
possible
hazards
with this procedure!
The
possible
hazards
are
shown in
the adjoining symbols.
A
Marks
a
special safety
message.
U~ Means Wote;
not
safety related.
1-2. Arc Welding Hazards
A 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 1-4. Read and follow all
Safety
Standards.
A Only qualified
persons should install, operate, maintain, and
repair
this unit.
A During operation, keep everybody, especially children,
away.
ELECTRIC SHOCK
can
kill.
~
Touching
live electrical
parts
can cause
fatal shocks
or severe
bums. 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.
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).
Properly install and ground this equipment according to its
Owners Manual and national, state, and local codes.
Always verify the supply ground check and be
sure
that input
power cord
ground
wire is
property
connected to
grDund terminal in
disconnect box
or
that cord plug is connected
to
a
properly
grounded receptacle outlet.
When making input connections, attach proper
grounding
conduc
tor first double-check connections.
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.
This group of
symbols
means
Waming!
Watch Out! possible
ELECTRIC SHOCK, MOVING PARTS, and I-lOT PARTS hazards.
Consult symbols and related instructions below for necessary actions
to
avoid the hazards.
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.
Use only well-maintained equipment Repair
or
replace damaged
parts at
once.
Maintain unit according
to
manual.
Wear
a
safety
hamess 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 after removal of
input
power
on
inverters.
Turn Off inverter, disconnect input power, and discharge input
capacitors according to
instructions in Maintenance Section
before touching
any
parts.
I
r-~~~
~.
FUMES AND GASES
can
be hazardous.
I(~12
L..._
\Q
Welding produces
fumes
and
gases.
Breathing
fl
y these fumes and gases
can
be hazardous to
your
health.
Keep
your
head out of the fumes. Do not breathe the fumes.
If
inside, ventilate the
area
and/or
use
exhaust at the
arc
to
remove
welding fumes and gases.
If ventilation is poor,
use an
approved air-supplied respirator.
Read the Material
Safety Data
Sheets
(MSDSs)
and the
manufacturers instructions for metals, consumables, coatings,
cleaners, and degreasers.
Work in
a
confined space only if it is well ventilated,
or
while
wearing
an
air-supplied respirator. Always have
a
trained watch-
person
nearby. Welding fumes and gases
can
displace air and
lower the oxygen level causing injury
or
death. Be
sure
the breath
ing
air is safe.
Do not weld in locations
near
degreasing, deaning,
or
spraying
op
erations. The heat and
rays
of the
arc can
react
with vapors to
form
highly
toxic and irritating
gases.
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.
OM-193 084
Page 1