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F-5
TROUBLESHOOTING GUIDE
PROBLEMS
(SYMPTOMS)
The air begins to flow, the
"OUTPUT ON" LED lights for a
short time, but no pilot arc is
established. The high frequen-
cy arc does NOT appear
across the torch tip.
If for any reason you do not understand the test procedures or are unable to perform the tests/repairs safely, contact the Lincoln
Electric Service Department for technical troubleshooting assistance before you proceed call 216-383-2531 or 1-800-833-9353.
PRO-CUT 60
TROUBLESHOOTING & REPAIR
POSSIBLE AREAS OF
MISADJUSTMENT(S)
OUTPUT PROBLEMS
1. Check the torch consum-
ables to be sure they are
installed securely.
sure they
are not dirty or
greasy and are in good con-
dition. Replace the consum-
ables if necessary.
2. Check for the presence of
high frequency at the spark
gap, located inside the Right
Case Side Assembly panel
of the machine. The "spark"
normally will be present for
a second or two when the
torch trigger is pulled.
3. Check the high frequency
spark gap setting. It should
be at .060" (1.5mm). DIS-
CONNECT
POWER BEFORE ADJUST-
ING THE HIGH FREQUEN-
CY CIRCUIT.
4. If the high frequency "spark"
is present at the spark gap
located inside the panel, the
torch and cable assembly
may be faulty.
CAUTION
detailed in the beginning of this manual.
RECOMMENDED
COURSE OF ACTION
1. If
"spark" is present at the
Make
spark gap located inside the
panel, the torch and cable
assembly may be faulty.
Perform the Torch, Torch
Cable
Internal Trigger and Safety
Circuit Tests.
2. If
"spark" is not present at the
spark gap, check that pilot
control relay (CR2) contacts
close when the torch trigger
is pulled.
a. If pilot control relay
(CR2) contacts close when
torch trigger is pulled, per-
form
ALL
INPUT
Transformer Test.
b. If pilot control relay
(CR2) contacts DO NOT
close, test for 115 VAC
between leads #36 and #31
on pilot control relay (CR2)
when the torch trigger is
pulled. If 115 VAC IS pre-
sent,
(CR2)
Replace.
If 115 VAC IS NOT pre-
sent, check plug J10 on
Control Board and asso-
ciated wires for loose or
faulty connections.
are found, Control Board
could be faulty. Replace.
Observe Safety Guidelines
the
high
frequency
Assembly,
and
the
high
frequency
High
Voltage
pilot
control
relay
could
be
faulty.
If none
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