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SECTION
1
-
SAFETY
PRECAUTIONS
-
READ
BEFORE
USING
1-1
Symbol
Usage
Means
Warning!
Watch
Out!
There
are
possible
hazards
with
this
procedure!
The
possible
hazards
are
shown
in
the
adjoining
symbols.
porn
_nd_5/97
1-2
Plasma
Arc
Cutting
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.
w
i
iriG
can
cause
fire
or
explosion
Hot
metal
and
sparks
blow
out
from
the
cutting
arc.
The
flying
sparks
and
hot
metal,
hot
workpiece,
and
hot
equipment
can
cause
fires
and
bums.
Check
and
be
sure
the
area
is
safe
before
doing
any
cutting.
Protect
yourself
and
others
from
flying
sparks
and
hot
metal.
Do
not
cut
where
flying
sparks
can
strike
flammable
material.
Remove
all
flammables
within
35
ft
(10.7
m)
of
the
cutting
arc.
If
this
is
not
possible,
tightly
cover
them
with
approved
covers.
Be
alert
that
sparks
and
hot
materials
from
cutting
can
easily
go
through
small
cracks
and
openings
to
adjacent
areas.
Watch
br
fire,
and
keep
a
fire
extinguisher
nearby.
Be
aware
that
cutting
on
a
ceiling,
floor,
bulkhead,
or
partition
can
cause
fire
on
the
hidden
side.
Do
not
cut
on
closed
containers
such
as
tanks
or
drums.
Connect
work
cable
to
the
work
as
close
to
the
cutting
area
as
practical
to
prevent
cutting
current
from
traveling
long,
possibly
unknown
paths
and
causing
electric
shock
and
fire
hazards.
Never
cut
containers
with
potentially
flammable
materials
inside
they
must
be
emptied
and
properly
cleaned
first.
Do
not
cut
in
atmospheres
containing
explosive
dust
or
vapors.
Do
not
cut
pressurized
cylinders,
pipes,
or
vessels.
Do
not
cut
containers
that
have
held
combustibles.
Wear
oil-free
protective
garments
such
as
leather
gloves,
heavy
shirt,
cuffless
trousers,
high
shoes,
and
a
cap.
Do
not
locate
unit
on
or
over
combustible
surfaces.
Remove
any
combustibles,
such
as
a
butane
lighter
or
matches,
from
your
person
before
doing
any
cutting.
7
ELECTRIC
SHOCK
can~
kill
~ki~,
I
Touching
live
electrical
parts
can
cause
fatal
I
shocks
or
severe
burns.
The
torch
and
work
circuit
are
electrically
live
whenever
the
output
is
on.
The
_J
input
power
circuit
and
machine
internal
circuits
are
also
live
when
power
is
on.
Plasma
arc
cutting
requires
higher
voltages
than
welding
to
start
and
maintain
the
arc
(200
to
400
volts
dc
are
common),
but
also
uses
torches
designed
with
safety
interlock
systems
which
turn
off
the
machine
when
the
shield
cup
is
loosened
or
if
tip
touches
electrode
inside
the
nozzle.
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
touch
torch
parts
if
in
contact
with
the
work
or
ground.
Turn
off
power
before
checking,
cleaning,
or
changing
torch
parts.
Disconnect
input
power
before
installing
or
servicing
this
equip
ment.
Lockout/tagout
input
power
according
to
OSHA
CFR
191
0.147
(see
Safety
Standards).
Properly
install
and
ground
this
equipment
according
to
its
Own
ers
Manual
and
national,
state,
and
local
codes.
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
always
verify
the
supply
ground.
When
making
input
connections,
attach
proper
grounding
con
ductor
first.
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.
Inspect
and
replace
any
worn
or
damaged
torch
cable
leads.
Do
not
wrap
torch
cable
around
your
body.
Ground
the
workpiece
to
a
good
electrical
(earth)
ground
if
re
quired
by
codes.
Use
only
well-maintained
equipment.
Repair
or
replace
damaged
parts
at
once.
Wear
a
safety
harness
if
working
above
floor
level.
Keep
all
panels
and
covers
securely
in
place.
Do
not
bypass
or
try
to
defeat
the
safety
interlock
systems.
Use
only
torch(es)
specified
in
Owners
Manual.
Keep
away
from
torch
tip
and
pilot
arc
when
trigger
is
pressed.
Clamp
work
cable
with
good
metal-to-metal
contact
to
workpiece
(not
piece
that
will
fall
away)
or
worktable
as near
the
cut
as
practical.
Insulate
work
clamp
when
not
connected
to
workpiece
to
prevent
contact
with
any
metal
object.
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.
a
A
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.
OM-1
82702
Page
1