AIM Manual

Motor Maintenance » All Motors (Page 45)

System Troubleshooting (Continued)

Motor Runs Continuously
A. Incorrect voltageUsing voltmeter, check the line terminals. Voltage must be within ± 10% of rated voltage.Contact power company if voltage is incorrect.
B. Overheated protectorsDirect sunlight or other heat source can raise control box temperature causing protectors to trip. The box must not be hot to touch.Shade box, provide ventilation or move box away from source.
C. Defective control boxFor detailed procedures, see pages 48-57.Repair or replace.
D. Defective motor or cableFor detailed procedures, see pages 45 & 46.Repair or replace.
E. Worn pump or motorCheck running current, see tables 13, 22, 24, 25, & 27.Replace pump and/or motor.
Motor Runs But Overload Protector Trips
A. Incorrect voltageUsing voltmeter, check the line terminals. Voltage must be within ± 10% of rated voltage.Contact power company if voltage is incorrect.
B. Overheated protectorsDirect sunlight or other heat source can raise control box temperature causing protectors to trip. The box must not be hot to touch.Shade box, provide ventilation or move box away from source.
C. Defective control boxFor detailed procedures, see pages 48-57.Repair or replace.
D. Defective motor or cableFor detailed procedures, see pages 45 & 46.Repair or replace.
E. Worn pump or motorCheck running current, see tables 13, 22, 24, 25, & 27.Replace pump and/or motor.