OLXE 03/10
14
Trouble Shooting
PROBLEM POSSIBLE CAUSE RECOMMENDATION(S)
Only a FEW VOLTS Loss of residual magnetism of the exiter fi eld • Flash fi eld.
of output
Disconnection or short circuit of windings • Check the insulation of all windings
and check the resistance value.
Defective AVR • Check the AVR.
Defective rotating rectifi er assembly • Replace diode elements.
Voltage is LOW Incorrect wiring (GEN, AVR) • Check the winding connection.
Low speed • Check the engine.
Overload • Reduce the load.
Defective AVR • Check the AVR.
Voltage DIPS Starting of big motor or spot welding machine • About 15% voltage dip is no problem.
when on load
Defective diode on rotating rectifi er • Change diode.
[F(+) – F(-) terminal voltage will show a
very high value when a diode is defective]
Voltage is HIGH Incorrect wiring (GEN, AVR) • Check the AVR.
Too high speed • Check the engine.
Defective AVR • Check the AVR.
Voltage FLUCTUATES Wiring leads are loose • Tighten leads.
Irregular speed of engine • Check the engine.
Poor AVR adjustment • Check the AVR.
External noise • Check the fi lter.
Abnormal SOUND Foundation uneven • Check ground level.
or VIBRATION
Poor mounting • Check the mounting section.
Misaligned coupling • Check the coupling section.
Defective bearing • Replace the bearing.
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