Troubleshooting - Lincoln Electric INVERTEC CC400-S Operator's Manual

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CAUTION
Observe all Safety Guidelines detailed in the beginning and throughout this manual.
Problems (Symptoms)
Output Problems
Major physical or electrical
damage is evident when the
sheet metal covers are removed.
Input breaker keeps tripping
Machine will not power up
(no lights, no fan, etc.)
Thermal LED is lit.
Machine won't weld, can't get any
output.
Machine won't produce full
output.
General degradation of the weld
performance

TROUBLESHOOTING

If for any reason you do not understand the test procedures or are unable to
perform the tests/repairs safely, contact your local authorized Lincoln Electric
Field Service Facility for technical assistance.
Possible Areas of Misadjustment(s)
None
1. Make certain that fuses or
breakers are properly sized.
See Installation section of this
manual for recommended
fuse and breaker sizes.
2. Welding procedure is drawing
too much output current, or duty
cycle is too high. Reduce
output current, duty cycle, or
both.
3. There is internal damage to
the power source.
1. Make certain that the power to
the CC400-S/-S PLUS is
energized and is within the
CC400-S/-S PLUS operating
range.
1. Check for proper fan operation.
(Fan should run whenever
output power is on.) Check for
material blocking intake or
exhaust louvers, or for
excessive dirt clogging cooling
channels in machine.
2. Machine may have been
operated above it's duty
cycle..
1. The ALARM light is lit, input
voltage is too low or too high.
Make certain that input voltage
is proper, according to the
Rating Plate.
2.
If the Thermal LED is also lit, see
Thermal LED is Lit section.
1. Input voltage may be too low,
limiting output capability of the
power source. Make certain
that the input voltage is proper,
according to the Rating Plate.
2. Current or voltage display
meter is not properly
calibrated.
3. Maybe the welding cable and
work cable are too long, or
their across area art too small.
1. Check for electrode holding
problems, bad connections,
excessive loops in cabling, etc.
2. Verify weld mode is correct for
®
INVERTEC CC400-S/-S PLUS
Recommended Course of Action
Contact your local authorized
Lincoln Electric Field Service
facility for technical assistance.
If there is internal damage,
contact an authorized Lincoln
Electric Service facility for
technical assistance.
In a typical installation the
main power switch on the
controller is the power switch.
Clear obstruction or repair fan
After machine has cooled,
reduce load, duty cycle, or
both
Contact your local authorized
Lincoln Electric Field Service
facility for technical assistance.
Correct input voltage level.
Contact your local authorized
Lincoln Electric Field Service
facility for technical assistance.
Please shorten welding cable
and work cable, or use bigger
size cables for reducing the
voltage drop on cables.
If the machine need
calibration, contact an
authorized Lincoln Electric
Service facility for technical
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