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F-4
TROUBLESHOOTING & REPAIR
F-4
INVERTEC V250-S
Observe all Safety Guidelines detailed throughout this manual
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.
CAUTION
OUTPUT PROBLEMS
PROBLEMS
(SYMPTOMS)
POSSIBLE AREAS OF
MISADJUSTMENT(S)
RECOMMENDED
COURSE OF ACTION
Major physical or electrical damage
is observed when cover wrap-around
is removed.
The machine is dead - no output -
no fan.
Contact your local Lincoln
Authorized Field Service Facility.
1. The input power switch must be
in the ON position.
2. Make sure the input voltage is
correct for the machine.
3. If the machine is set for single-
phase operation, inspect to
assure that the WHITE and
BLACK leads are connected
properly and the RED lead is not
connected and is insulated.
4. Check that the input voltage set-
up switch and jumper “A” (the
reconnect auxiliary jumper) are in
the proper position for the input
voltage being applied. Refer to
Input Voltage Reconnect
Procedure
in the Installation
Chapter.
5. Check continuity of the 0.6-amp
slow blow fuse located on the
reconnect panel.
Contact Lincoln Electric Service
Department (216)-383-2531 or
1-800-833-9353
1. The power switch (S1) may be
faulty. Check or replace.
2. Check for loose or broken leads
between the power switch (S1)
and the input rectifier D9. See
wiring diagram.
3. Perform the
Auxiliary
Transformer Test
.
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