dca220sscu/4i 60 hz generaTor• operaTion manual — rev. #0 (10/25/12) — page 49
trOUBLeshOOtiNG (GeNeratOr)
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 office or service plant.
Table 17. 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 approximately 19 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.
Summary of Contents for MQ Power Whisperwatt DCA220SSCU
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Page 54: ...page 54 dca220sscu 4i 60 hz generator operation and Parts manual rev 0 10 25 12 GENERATOR ASSY...
Page 70: ...page 70 dca220sscu 4i 60 hz generator operation and Parts manual rev 0 10 25 12 battery ASSY...
Page 72: ...page 72 dca220sscu 4i 60 hz generator operation and Parts manual rev 0 10 25 12 muffler ASSY...
Page 74: ...page 74 dca220sscu 4i 60 hz generator operation and Parts manual rev 0 10 25 12 fuel tank ASSY...
Page 76: ...page 76 dca220sscu 4i 60 hz generator operation and Parts manual rev 0 10 25 12 ENCLOSURE ASSY...
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