SYMPTOM CAUSE
ACTION
Residual Voltage -
Residual voltage at regulator power
Check wiring diagram for proper
No Output
input wires 3 & 4 below 10Vac.
connections.
Flash generator field. Refer to field flashing
section in generator manual.
Acceleration time to rated speed too long. Reduce acceleration time.
Interrupt power input to regulator after
achieving rated speed.
Field leads F1, F2 not connected.
Connect field leads F1, F2.
Power input leads not connected.
Connect power input leads 3, 4.
Blown or missing fuse.
Replace fuse.
Defective regulator.
Replace regulator.
Defective generator.
Consult generator manual.
Output Voltage Low
Incorrect connections.
Check wiring diagram for proper
connections.
Voltage adjust turned down.
Rotate voltage adjust CW until desired
voltage is reached.
Remote voltage adjust is turned down.
Rotate remote voltage adjust CW until
desired voltage is reached.
Defective regulator.
Replace regulator.
Output Voltage High
Voltage adjust turned too high.
Rotate voltage adjust CCW until desired
voltage is reached.
Remote voltage adjust is turned too high.
Rotate remote voltage adjust CCW until
desired voltage is reached.
Output Voltage High -
Defective regulator.
Replace regulator.
No Adjustment
Remote Voltage Adjust
Voltage adjust wire backwards.
Reverse the wiring of the remote
Operates Backwards
voltage adjust.
Generator Output
Stability adjust not set properly.
Rotate the stability adjust in a CW
Voltage Hunting
direction until hunting stops.
Poor Regulation
Defective regulator.
Replace regulator.
A Regal Brand
100 E. Randolph Street (54401)
PO Box 8003
Wausau, WI 54402-8003 U.S.A.
PH: 715-675-3359
FAX: 715-675-8026
www.marathonelectric.com
©2014 Regal-Beloit Corporation MANUAL GPN011 7717J/1K/04-14/NP/FS Printed in the U.S.A.
