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4-4.
Troubleshooting
Trouble
Remedy
No
pilot
arc;
difficulty
in
establishing
an
arc.
Clean
or
replace
worn
consumables
as
necessary
(see
torch
Owners
Manual).
Check
for
damaged
torch
or
torch
cable
(see
torch
Owners
Manual).
Have
Factory
Authorized
Service
Agent
check
control
relay
CR6,
power
control
board
PCi
safety
con
trol
board
PC2,
gas
valve
GS1,
rectifier
SRi,
and
check
gas/air
system
for
leaks.
No
cutting
output;
Power
light
off;
Trouble
lights
off;
Ready
light
off;
fan
motor
FM
does
not
run.
Place
Power
switch
in
On
position.
Place
line
disconnect
device
in
On
position
(see
Section
2-7).
Check
line
fuse(s)
and
replace
if
needed
or
reset
circuit
breakers
(see
Section
2-7).
Have
Factory
Authorized
Service
Agent
check
power
switch
Si,
input
resistor
R2,
control
relay
CR6,
safety
control
board
PC2,
and
transformer
Ti.
No
cutting
output;
Power
light
on;
Ready
light
on;
Trouble
lights
off;
fan
motor
FM
running.
Be
sure
work
clamp
is
connected.
Clean
or
replace
worn
consumables
as
necessary
(see
torch
Owners
Manual).
Have
Factory
Authorized
Service
Agent
check
contactor
W,
control
relay
CR3,
and
safety
control
board
PC2.
No
cutting
output;
Power
light
on;
Ready
light
off;
Trouble
lights
off;
fan
motor
FM
running.
Reset
Power
switch.
Have
Factory
Authorized
Service
Agent
check
contactor
CR7,
control
relay
CR6,
safety
control
board
PC2,
input
resistor
R2,
power
control
board
PCi.
Check
for
proper
torch
lead
connections.
Check
op
eration
of
gas
valve
GS1,
and
check
gas/air
system
for
leaks.
No
control
of
output.
Have
Factory
Authorized
Service
Agent
check
power
control
board
PCi,
and
safety
control
board
PC2.
No
gas/air
flow;
Power
light
on;
Ready
light
on;
Trouble
lights
off;
fan
motor
FM
running.
Have
Factory
Authorized
Service
Agent
check
for
proper
torch
connections,
and
check
power
control
board
PCi.
Check
operation
of
gas
valve
GSi,
and
check
gas/air
system
for
leaks.
Pressure
Trouble
light
On;
Ready
light
off.
Check
for
correct
gas/air
pressure
adjustment
(see
Section
3-i).
Check
for
sufficient
gas/air
supply
pressure
(see
Section
2-6).
Check
for
dirty
air
filter/regulator
and
clean,
if
needed
(see
manufacturers
instructions).
Cup
Trouble
light
On;
Ready
light
off.
Check
torch
shield
cup
(see
Section
4-2).
Have
Factory
Authorized
Service
Agent
check
for
proper
torch
connections,
and
check
safety
control
board
PC2.
Temperature
Trouble
light
On;
Ready
light
off.
Thermostat
TP1
open
(overheating).
Allow
fan
to
run;
the
thermostat
closes
when
the
unit
has
cooled
(see
Section
4-2).
Have
Factory
Authorized
Service
Agent
check
safety
control
board
PC2
and
transformer
Ti.
Fan
motor
FM
does
not
run;
Power
light
and
Ready
light
both
On.
Have
Factory
Authorized
Service
Agent
check
fan
motor
connections.
Trouble
lights
not
working,
Have
Factory
Authorized
Service
Agent
check
safety
control
board
PC2.
OM-i82
702
Page
17