Table of Contents
Advertisement
4-1.
POWER SWITCH/BREAKER
AND
POWER ON
LIGHT
(Figure 4-1)
POWER
00
Placing
the
POWER switch/breaker
in the
ON
position
energizes
the
power
source.
The POWER ON
light
and
fan
motor
come on
whenever the POWER
switch/break
er
is
placed
in the
ON
position
and indicate that the unit
is
receiving input
power.
Placing
the POWER switch/
breaker in the
OFF
position
turns
off the
power
source,
POWER ON
light,
and fan
motor.
4A
CAUTION:
RESElliNG TRIPPED POWER
SWITCH/BREAKER
without
correcting
problem
can cause
damage
to this unit.
Do
not
reset
tripped
POWER switch/breaker.
See Table 6-2.
Troubleshooting
in
Section
6.
4-2.
READY
LIGHT
(FIgure
4-1)
When the READY
light
comes
on, all
of the
safety
shut
down devices within the control
circuitry
have been
monitored,
and the unit is
ready
for
operation.
If the
READY
light
does
not
come on
when the
POWER
switch/breaker
is
placed
in the ON
position,
check the
safety
devices
(see
Section
6-6).
4-3.
METAL
SWITCH
(Figure 4-1)
The METAL
switch
provides
a means
for
cutting
bare
or
painted
metal.
When the
METAL switch is
placed
in the
PAINTED
position,
the unit
provides
a
pilot
arc
and
high
frequency
for
arc
starting
and
during cutting.
When the
METAL switch is
placed
in the BARE
position,
the unit
provides
only high frequency
for
arc
starting
and
not
dur
ing cutting.
The METAL switch
should be
placed
in the
BARE
position
whenever
possible
to
get
the
longest
possible
life from the torch electrode and
tip.
4-4.
THICKNESS CONTROL
(FIgure
4-1)
The THICKNESS control
provides
a means
for
selecting
the
cutting capacity
of the power
source.
Rotating
the
control
clockwise increases the
cutting capacity
of the
power
source.
The
scale
surrounding
the control is cali
brated in
gauge
thickness for mild steel. Increase gauge
setting by
four gauges when
cutting
aluminum.
Proper
adjustment
of the
THICKNESS control
will
provide
the
longest possible
life from the torch
electrode and
tip.
4-5.
GAS/AIR SWITCH
(FIgure
4.1)
The GAS/Al
R switch
provides
a means
for
adjusting
the
air
filter/regulator
without
energizing
the
cutting
circuit.
Placing
the GAS/AIR switch
in the
SET
position
ener
gizes
the air solenoid
thereby allowing
the air
filter/regu
latorto
be
properly
set to
50
PSI
(3.4 bars).
Placing
the
GAS/AIR switch
in
the CUT
position provides
air
to
the
cutting
torch.
4-6.
TRIGGER HOLD SWITCH
(Figure 4-1)
The TRIGGER hold switch
provides
the
capability
of
torch switch self-hold for
long cutting operations.
When
the TRIGGER hold switch is
placed
in the
HOLD
posi
tion,
the torch switch
can
be released while
cutting,
and
the
cutting
circuit
will
continue
to
operate
until the torch
switch is
pressed
again.
When the TRIGGER hold
switch is
placed
in the NORMAL
position,
the torch
switch
must
be held closed while
cutting
and released at
the end of the
cutting operation.
The TRIGGER hold
switch should be
placed
in
the NORMAL
position
for
short
cutting operations
and
placed
in the HOLD
posi
tion for
long cutting operations.
SECTION
5-
SEQUENCE OF OPERATION
a
WARNING: PLASMA ARC CUTTING
can
be
hazardous;
FIRE OR EXPLOSION
can
result
from
placing
unIt
on or near
combustible
surfaces.
Only qualified
persons
are
to
operate
this
equipment according
to
all codes and
employ
ers
safety practices.
Do
not
locate unit
over
combustible surfaces.
Use
torch(es) specified
in
Owners
Manual.
Keep
children away.
CUTTING
CONTAINERS,
such
as
barrels,
tanks,
and
pIpes,
can
result In
explosions,
fire,
or
poisonous
fumes.
Cut containers
only
after
they
have been
properly
cleaned and
prepared.
ELECTRIC SHOCK
can
kill;
IMPROPER AIR
FLOW AND EXPOSURE TO ENVIRONMENT
can
damage
Internal
parts.
Do
not
touch live electrical
parts.
Keep
all
covers,
panels,
and
guards securely
in
place.
Wear
dry insulating gloves
and
body
protec
tion.
Do
not
use
cables
or
torch with
damaged
in
sulation.
Turn off power
source,
and
remove
input
power
plug
from
receptacle
before
cleaning slag
from torch
tip
or
replacing
any torch
parts.
Ma/nt
aTh
at
least 10 inches
(254
mm)
of
unre
stricted space
on
al/sides of power
source,
and
keep
underside free
of
obstructions.
Do
not
place
any
filtering
device
over
the in
take air passages of this
power
source.
Warranty
is void if the
power
source
is
operated
with
any
portion
of the
outer
enclosure removed.
FUMES
AND
GASES
can
seriously
harm
your
health.
Keep
your head
out
of any fumes.
Ventilate
area,
or use
approved
breathing
de
vice.
OM-296
Page
11
Advertisement
Table of Contents
