Lincoln Electric INVERTEC V450-PRO - Manual (Page 32)

E-3 TROUBLESHOOTING E-3
INVERTEC V450-PRO (CE)
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 your
Local Lincoln Authorized Field Service Facility for technical troubleshooting assistance before you proceed.
CAUTION
PROBLEMS
(SYMPTOMS)
POSSIBLE
CAUSE
RECOMMENDED
COURSE OF ACTION
Machine often “ noodle welds ” (out-
put is limited to approximately 100
amps) when running a particular pro-
cedure, especially a procedure with
high WFS.
Machine won ’ t produce full output.
Auxiliary receptacle is “ dead ” no
auxiliary voltage.
General degradation of the weld per-
formance.
1. Secondary current limit has been
exceeded, and the machine has
phased back to protect itself.
2. Adjust procedure or reduce load
to lower current draw from the
machine.
3. A single phase input (loss of L2)
will reduce the secondary current
limit from 570 Amps to 325 Amps.
1. Input voltage may be too low, lim-
iting output capability of the power
source. Make certain that the
input voltage is proper, according
to the Rating Plate located on the
rear of the machine.
2. Input may be “ single phased ” .
Make certain the input voltage is
proper on all three Input lines.
3. Secondary current or voltage not
properly calibrated. Check values
displayed on the Power Feed
10/11 verses readings on an
external meter.
1. Circuit breaker CB2 (on case
front) may have opened. Reset.
2. Circuit breaker CB4 (in reconnect
area) may have opened. Reset.
1. Check for feeding problems, bad
connections, excessive loops in
cabling, etc.
2. Verify weld mode is correct for
processes.
3. The power source may require
calibration.
4. Check the actual current dis-
played vs. actual current mea-
sured via external meter.
5. Check the actual voltage dis-
played vs. actual voltage mea-
sured via external meter.
If all recommended possible areas of
misadjustment have been checked
and the problem persists, Contact
your local Lincoln Authorized
Field Service Facility.