Page 8
60706-198
1004-00
TROUBLE SHOOTING TABLE
SYMPTOM CAUSE(S)
CORRECTIVE ACTION
No output
1. Circuit breaker open.
1.
Reset circuit breakers, replace if defective.
voltage.
2. Defective voltmeter.
2.
Check output with another meter, replace meter if defective.
3. Short circuit in the load.
3.
Disconnect the load. Check voltage at receptacle cord set.
Check motors, appliances and load leads for short circuit.
Repair short.
4. Defective receptacles.
4.
Remove panel cover and check for voltage to the
receptacles. Replace defective receptacles.
5. Loose (or broken) wires or
5.
Remove panel cover and check all wiring and connections.
connections in control box.
Tighten and/or repair where necessary.
6. Defective rectifier.
6.
Test rectifier. Replace if defective.
7. Dirty slip rings.
7.
Clean and polish. Use 00 sandpaper or crocus cloth,
never use emery paper.
8. Brushes binding in holders.
8.
Check brushes for swelling; replace defective brushes;
clean brush holders.
9. Shorted or open rotor.
9.
Measure rotor resistance. Replace rotor if open or shorted.
10.Shorted or open stator.
10. Measure between leads for open or short. Replace stator if
defective.
11.Open transformer.
11. Connect or tighten primary and secondary leads. Check
secondary for open circuit. Replace transformer if defective.
12.Rotating field polarity
12. Check by interchanging F (—) and F (+) leads at the
incorrect.
brushes. Inner slip ring is positive F (+) and must be
connected to the (+) terminal of the rectifier. Flash the field
with 12 volts DC.
Low voltage.
1. Engine speed too slow.
1.
Check engine speed. Increase RPM if necessary.
2. Generator overloaded.
2.
Reduce load if it is higher than the rated capacity of the
generator. (See generator nameplate).
3. Inadequate engine horsepower.
3.
Generator requires 2 HP/1000 watts output. Obtain
larger engine if necessary.
4. Incorrect field excitation.
4.
Check for worn brushes and weak or broken brush springs;
(No-load output low.)
replace as required. Check input AC voltage to rectifier.
Check rectifier output DC voltage to positive DC brush. If no
DC voltage is present at the brush, replace the rectifier.
Check for dirty slip rings. Clean them if they are dirty.
5. Connection of current
5.
Have qualified service technician recheck and correct the
transformer secondary leads
connections.
not correct.
