A SERVICE OF

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5
-
6.
USE
OF
INDICATOR
LIGHTS
FOR
TROUBLESHOOTING
Ga~
Indicator
Light
I
Gas
does
not
flow:
IF
Gas
flows:
IF
Gas
dodes
not
flow:
System
normal
(on).
Check
gas
valve
operation.
Check
gas
valve
operation
and
gas line
for
leaks.
Check
interface
board
PC3.
System
normal
(off).
-Contactor
Indicator
Light
Contactor
closed:
System
normal
(on).
I,
IF
Contactor open:
Check
interconnecting
cords.
Check
interface board
PC3.
Contactor
closed:
Check
display
board
PC4.
IF
Contactor
Open:
System
normal
(off).
Wire
Feed
Indicator
L.~,
1
Wire feeds:
System
normal
(on).
Wire
does not
feed:
Check
circuit
breaker
CB1.
Check
relay
CR1.
Check
interface
board
PC3.
Wire
feeds:
Check
input
signal
from
robot
to motor
board
PC2.
Signal
should
be
0-10
vdc
between
pins
K
and
B
(common)
at
RC5.
Check
wire
feed board
PC2.
IF
Wire
does not
feed:
System
normal
(off).
On
I
Arc
started:
System
normal
(on).
Current
Indicator
Light
No
arc:
Replace
reed
relay.
Arc
started:
Replace
reed
relay.
Off
V
No
arc:
System
normal
(off).
Arc
Failure
Indicator
Ligl~
II
No
arc:
Arc
started:
Check
weld
parameters.
Check
signal
from
robot.
Signal
should
be
24vdc
between
terminals 2TL
and
2TG.
Check
display
board
PC4.
No
arc:
Normal
during
idling.
Arc
started:
Normal
while
welding.
On
Gas
flows:
Off
On
Off
On
,~.1
On
-Off
OM-882
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