9
2095-0
60706-230
SYMPTOM
POSSIBLE CAUSE(S)
CORRECTIVE ACTION
No output or low voltage.
. Open or shorted armature.
2. Open or grounded field coil(s).
3. Generator operating below
correct RPM speed.
4. Generator overloaded.
5. Short circuit in the load.
6. Loose (or broken) wires or
connections in the control box.
7. Defective rectifier.
8. Dirty slip rings.
9. Brushes binding in holders.
0. Loss of residual magnetism.
. Replace armature.
2. Replace field coil(s).
3. Generator must be operated at
3600 RPM +/- 90 RPM for proper
output voltage.
4. Reduce load to generator
nameplate.
5. Disconnect the load. Check
motors, appliances and load leads
for short circuits. Repair short.
6. Remove panel cover and
check all wiring and connections.
Tighten and/or repair where nec-
essary.
7. Test rectifier. Replace if defec
-
tive.
8. Clean and polish. Use 00
sandpaper and crocus cloth,
never emery paper.
9. Check brushes for swelling.
Replace defective brushes. Clean
brush holders.
0. Check output voltage with
sensitive meter. If very low (i.e.
1/2 volt) flash fields with a 12 VDC
battery.
Output voltage too high.
Engine speed too high.
See engine manual.
Generator overheating.
. Generator overloaded.
2. Armature rubbing pole shoes.
3. Poor ventilation.
4. Short circuit in fields.
5. Short turns in armature.
. Reduce load.
2. Check bearing condition.
Check field shell bearing bracket
alignment.
3. 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.
4. Repair or replace - open or
shorted fields should be replaced.
Grounded fields may be repaired
by insulating at the point where
the ground occurs.
5. Replace armature.
Sparking at the brushes.
. Generator overloaded.
2. Brushes not seated properly.
3. Slip rings rough or eccentric.
4. Brushes sticking in brush
holder.
5. Brushes worn down shorter
than 3/8 inch.
. Reduce load.
2. Contour brushes (see maint.).
3. Redress slip rings (see maint.).
4. Remove brushes and inspect
and correct problem.
5. Replace brush. NOTE: Al-
ways replace brushes a full set at
a time.
TROUBLESHOOTING CHART
