Troubleshooting (Generator) - MULTIQUIP WHISPERWATT DCA45SSIU3 Operation And Parts Manual

Practically all breakdowns can be prevented by proper handling and maintenance inspections, but in the event of a
breakdown, use Table 17 shown below for diagnosis of the Generator. If the problem cannot be remedied, consult our
company's business offi ce or service plant.
Symptom
No Voltage Output
Low Voltage Output
High Voltage Output
Circuit Breaker Tripped
DCA45SSIU3 50 HZ GENERATOR • OPERATION AND PARTS MANUAL — REV. #2 (12/19/08) — PAGE 47

TROUBLESHOOTING (GENERATOR)

Table 17. Generator Troubleshooting
Possible Problem
AC Voltmeter defective?
Is wiring connection loose?
Is AVR defective?
Defective Rotating Rectifi er?
Defective Exciter Field?
Is engine speed correct?
Is wiring connections loose?
Defective AVR?
Is wiring connections loose?
Defective AVR?
Short Circuit in load?
Over current?
Defective circuit breaker?
Over current Relay actuated?
Check output voltage using a voltmeter.
Check wiring and repair.
Replace if necessary.
Check and replace.
Check for approximately 17.3 ohms across J & K on CN1
Turn engine throttle lever to "High".
Check wiring and repair.
Replace if necessary.
Check wiring and repair.
Replace if necessary.
Check load and repair.
Confi rm load requirements and reduce.
Check and replace.
Confi rm load requirement and replace.
Solution