TROUBLESHOOTING
Practically all breakdowns can be prevented by proper handling and maintenance inspections, but in the event of a breakdown, use Table 20 shown below for diagnosis of the Generator. If the problem cannot be remedied, consult our company's business office or service plant.
TABLE 20. GENERATOR TROUBLESHOOTING
SYMPTOM | POSSIBLE PROBLEM | SOLUTION |
|
|
|
No Voltage Output | AC Voltmeter defective? | Check output voltage using a voltmeter. |
|
|
|
| Is wiring connection loose? | Check wiring and repair. |
|
|
|
| Is AVR defective? | Replace if necessary. |
|
|
|
| Defective Rotating Rectifier? | Check and replace. |
|
|
|
| Defective Exciter Field? | Check for 17.3 ohms across J & K on CN1 |
|
|
|
Low Voltage Output | Is engine speed correct? | Turn engine throttle lever to "High". |
|
|
|
| Is wiring connections loose? | Check wiring and repair. |
|
|
|
| Defective AVR? | Replace if necessary. |
|
|
|
High Voltage Output | Is wiring connections loose? | Check wiring and repair. |
|
|
|
| Defective AVR? | Replace if necessary. |
|
|
|
Circuit Breaker Tripped | Short Circuit in load? | Check load and repair. |
|
|
|
| Over current? | Confirm load requirements and reduce. |
|
|
|
| Defective circuit breaker? | Check and replace. |
|
|
|
| Over current Relay actuated? | Confirm load requirement and replace. |
|
|
|
PAGE 48 — DCA25USIXF/DCA25USI2XF — OPERATION AND PARTS MANUAL — REV. #2 (07/26/11)
