Troubleshooting chart wiring schematic – Winco ULTB4000C User Manual
Page 8

12024-00
8
60706-225
SYMPTOM
POSSIBLE CAUSE(S)
CORRECTIVE ACTION
Low voltage.
1. Generator operating below
correct RPM speed.
2. Generator overloaded.
3. Defective stator
4. Defective rotor
1. Generator must be operated at
3600 RPM +/- 90 RPM for proper
output voltage.
2. Reduce load to generator
nameplate.
3. Repair or replace stator.
4. Repair or replace rotor.
Output voltage too high.
Engine speed too high.
See engine manual.
Generator overheating.
1. Generator overloaded.
2. Poor ventilation.
1. Reduce load.
2. Clear inlet and outlet air vents
of debris. If unit is housed, ensure
at least 2 ft. clearance on all sides
and that inlet and outlet vents are
of adequate size.
No output voltage.
1. Short in load.
2. Broken or loose wire.
3. Defective receptacles.
4. Defective capacitor.
5. Defective diode(s).
6. No residual magnetism in
generator.
7. Defective stator.
8. Defective rotor
1. Disconnect load and fi nd fault
in load.
2. Repair or replace wire.
3. Replace receptacle(s).
4. Replace capacitor.
5. Replace diode(s).
6. Flash the fi eld.
7. Repair or replace stator.
8. Repair or replace rotor.
TROUBLESHOOTING CHART
WIRING SCHEMATIC