Troubleshooting And Repair - Lincoln Electric POWER WAVE S500 Service Manual

F-4
Observe Safety Guidelines detailed in the beginning of this manual.
PROBLEMS
(SYMPTOMS)
Major physical or electrical damage
is evident when the Power Wave
S500 case is removed.
The input fuses repeatedly fail or the
input circuit breakers keep tripping.
The machine will not power up. No
lights or displays. The machine
appears to be off.
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 1-888-935-3877.

TROUBLESHOOTING AND REPAIR

POSSIBLE AREAS OF
MISADJUSTMENT(S)
OUTPUT PROBLEMS
1. Contact your local authorized
® Lincoln Electric Service Facility
1. Make certain the fuses or break-
ers are properly sized.
2. The welding procedure may be
drawing too much input current
or the duty cycle may be too
high. Reduce the welding cur-
rent and/or reduce the duty
cycle.
3. Check for error codes.
Status LED Troubleshooting in
this section.
1. Make sure the proper input volt-
age is being applied to the
machine (check fuses or break-
ers).
2. Make sure the input supply dis-
connect has been turned ON.
3. Make certain the input power line
switch is in the ON position.
4. Check for error codes.
Status LED Troubleshooting in
this section.
CAUTION
POWER WAVE
RECOMMENDED
COURSE OF ACTION
1. Contact the Lincoln Electric
Service Department at 1-888-
935-3877.
1. Perform the Input Board Test.
2. Perform the Power Conversion
Assembly Test.
3. Perform the PFC Control Board
Test.
See
1. Check the input line switch for
proper operation. Also check the
associated leads for loose or
faulty connections.
Wiring Diagram.
2. Check to make sure that 40VDC
is being applied to the Optional
User Interface Board at lead
52D(+) to lead 51D(-). See the
See Wiring Diagram.
3. Perform the 40 Volt DC Bus
Board Test.
4. Perform the Input Board Test.
5. Perform the PFC Control Board
Test.
® S500
F-4
See the