Troubleshooting; Generator Troubleshooting - Kubota KJ-S130VX Operator's Manual

TROUBLESHOOTING

36
TROUBLESHOOTING
CAUTION:
3
To avoid personal injury:
¡ Always perform all checks with engine stopped and cool to the touch except for
those checks in which operation is required.
¡ DO NOT touch the charging section during operation.
¡ Avoid any contact with rotating fan during operation.
If the engine does not function properly, use the following chart to identify and correct the cause.
a Generator Troubleshooting
Trouble
Single-phase load applied beyond allowable
level (on three phase models).
Unusual noise or
Bearing deteriorated.
vibration
Coupling damaged.
Cooling fan inlet or outlet blocked.
Voltage too high.
Frame overheated.
Overloaded.
Voltage maladjusted.
AVR excitation output cable broken.
AVR itself in trouble.
Voltage failure to rise. Exciter's winding short-circuited or broken.
AVR excitation input cable broken.
Generator's winding broken.
AVR excitation output fuse blown out.
Voltage maladjusted.
AVR voltage detection cable broken.
Voltage too high.
AVR itself in trouble.
Mercury arc lamp or such conductive load connected.
Inverter or such switching load connected.
Voltage hunting
AVR itself in trouble.
Connected cable or load short-circuited.
Circuit breaker turned
OFF.
Overloaded.
Lamp bulb broken.
Pilot lamp failure to
light up
Generator voltage too low.
Possible causes Correction
*Lower the load to acceptable level.
*Replace the bearing.
*Replace the coupling.
*Unblock the inlet or outlet.
*Readjust the voltage.
*Reduce the load.
*Readjust using the voltage control.
*Repair the cable.
*Replace the AVR.
*Replace the generator.
*Repair the cable.
*Replace the generator.
*Replace the fuse.
*Readjust using the voltage control.
*Repair the cable.
*Replace the AVR.
*Disconnect such load.
*Disconnect such load.
*Replace the AVR.
*Contact a qualified electrical
engineer for inspection.
*Reduce the load.
*Replace the bulb.
*See "Voltage failure to rise" above.