Lincoln Electric 500 - Manual (Page 36)

E-3 TROUBLESHOOTING E-3
VANTAGE 500 CUMMINS
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
Battery does not stay charged.
Engine will not idle down to low
speed.
Engine will not go to high idle when
attempting to weld.
Engine will not go to high idle when
using auxiliary power.
1. Faulty battery .
2. Faulty engine alternator.
3. Loose or broken lead in charging
circuit.
4. Loose fan belt may need tighten-
ing.
1. Idler switch in HIGH idle position,
make sure switch is set to AUTO.
2. External load on welder or auxil-
iary power.
3. Faulty, Weld Control PCB
(Printed Circuit Board) or elec-
tronic governor controller.
1. Poor work lead connection to
work.
2. Welding Terminals switch in
wrong position.
3. No open circuit voltage at output
studs.
4. Faulty electronic governor con-
troller or Weld Control PCB.
1. Broken wire in auxiliary current
sensor wiring.
2. Auxiliary power load is less than
100 watts.
3. Faulty electronic governor con-
troller or Weld Control PCB.
If all recommended possible areas of
misadjustment have been checked
and the problem persists, Contact
your local Lincoln Authorized
Field Service Facility.
FUNCTION PROBLEMS