AIM Manual

Motor Maintenance » All Motors (Page 44)

System Troubleshooting

Motor Does Not Start
POSSIBLE CAUSECHECKING PROCEDURESCORRECTIVE ACTION
A. No power or incorrect voltageCheck voltage at line terminals.
The voltage must be±10% of rated voltage.
Contact power company if voltage is incorrect.
B. Fuses blown or circuit breakers trippedCheck fuses for recommended size and check for loose, dirty or corroded
connections in fuse receptacle. Check for tripped circuit breakers.
Replace with proper fuse or reset circuit breakers.
C. Defective pressure switchCheck voltage at contact points. Improper contact of switch points can cause
voltage less than line voltage.
Replace pressure switch or clean points.
D. Control box malfunctionFor detailed procedure, see pages 48-57.Repair or replace.
E. Defective wiringCheck for loose or corroded connections or defective wiring.Correct faulty wiring or connections.
F. Bound pumpCheck for misalignment between pump and motor or a sand bound pump.
Amp readings will be 3 to 6 times higher than normal until the overload trips.
Pull pump and correct problem.
Run new installation until the water clears.
G. Defective cable or motorFor detailed procedure, see pages 46 & 47.Repair or replace.
Motor Starts Too Often
A. Pressure switch Check setting on pressure switch and examine for defects.Reset limit or replace switch.
B. Check valve - stuck openDamaged or defective check valve will not hold pressure.Replace if defective.
C. Waterlogged tankCheck air charge.Clean or replace.
D. Leak in systemCheck system for leaks. Replace damaged pipes or repair leaks.