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9287500991 Rev M
DECS-100 Maintenance and Troubleshooting
i
SECTION 6
• MAINTENANCE AND TROUBLE-
SHOOTING
TABLE OF CONTENTS
SECTION 6 MAINTENANCE AND TROUBLE-SHOOTING ..................................................................... 6-1
PREVENTIVE MAINTENANCE ............................................................................................................. 6-1
Connections........................................................................................................................................ 6-1
Storage / Electrolytic Capacitors ........................................................................................................ 6-1
Repair Procedures ............................................................................................................................. 6-1
TROUBLESHOOTING ........................................................................................................................... 6-1
Generator Voltage Does Not Build ..................................................................................................... 6-1
Low Generator Output Voltage........................................................................................................... 6-2
High Generator Output Voltage .......................................................................................................... 6-3
Poor Voltage Regulation .................................................................................................................... 6-3
Generator Output Unstable (Hunting) ................................................................................................ 6-3
Overexcitation Shutdown Indicator is Annunciating ........................................................................... 6-4
Loss of Generator Sensing Indicator is Annunciating ........................................................................ 6-4
Overexcitation Limiting Indicator is Annunciating............................................................................... 6-4
Underexcitation Limiting Indicator is Annunciating............................................................................. 6-5
Underfrequency Active Indicator is Annunciating............................................................................... 6-5
No Droop ............................................................................................................................................ 6-5
No Voltage Matching .......................................................................................................................... 6-6
