Lincoln Electric IDEALARC IM10018-A - Manual (Page 35)

E-8 TROUbLESHOOTING E-8
IDEALARC® DC-600 VRD
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.
CAUTION
If all recommended possible areas
of possible cause have been
checked and the problem persists,
Contact your local Lincoln
Authorized Field Service Facility.
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.
POSSIbLE
CAUSE
1. Remove all welding cables and
control cables from the DC 600.
Jumper #2 to #4 at the terminal
strip or set OUTPUT TERMI-
NALS 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 exter-
nal to the DC600. Either the
remote leads #75, #76 or #77
are grounded to the negative
output 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 Service
Facility.
RECOMMENDED
COURSE OF ACTION
OUTPUT PRObLEMS
Observe all Safety Guidelines detailed throughout this manual