Lincoln Electric DC-600 series Operator's Manual page 36

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Observe all Safety Guidelines detailed throughout this manual
PROBLEMS
(SYMPTOMS)
Machine shuts off (input contactor
drops out) when the welder output
terminals are made electrically
"hot".
(#2 to #4 closure at terminal strip.)
or OUTPUT TERMINALS switch
is in ON position.
The DC600 will NOT shut off when
the Power Switch is turned to
OFF.
If for any reason you do not understand the test procedures or are unable to perform the tests/repairs safely, contact your
Local Lincoln Authorized Field Service Facility for technical troubleshooting assistance before you proceed.
TROUBLESHOOTING
POSSIBLE
CAUSE
OUTPUT PROBLEMS
1. Remove all welding cables and
control cables from the DC
600. Jumper #2 to #4 at the
terminal strip or set OUTPUT
TERMINALS switch to ON
position. If the machine does
NOT shut off and normal open
circuit voltage is present at the
welder output terminals the
problem is external to the
DC600. Either the remote
leads #75, #76 or #77 are
grounded to the negative out-
put cable or there is a short on
the welding output terminals.
2. If the machine still shuts off
when all control and welding
cables are removed then the
problem is internal to the DC-
600.
1. Contact your local Lincoln
Authorized Field
Facility.
CAUTION
DC-600
RECOMMENDED
COURSE OF ACTION
If all recommended possible areas
of misadjustment have been
checked and the problem persists,
Contact your local Lincoln
Authorized Field Service Facility.
Service
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