Xylem IM158 R04 Model SMVT - Manual (Page 35)

SMVT Installation, Operation and Maintenance Manual 33
40. Follow the instructions in “Section IV. Installation” to properly wire the motor.
41. Follow the instructions in “Section V. Commissioning, Startup, Operation, and
Shutdown” for the proper procedures to restart the pump.
VII. Troubleshooting
Failure to disconnect and lockout electrical power before attempting any maintenance
can cause shock, burns or death.
Symptoms
MOTOR NOT RUNNING
(See Probable Causes 1 through 5)
LITTLE OR NO LIQUID BEING DELIVERED BY PUMP
(See Probable Causes 6 through 12)
POWER CONSUMPTION TOO HIGH
(See Probable Causes 3, 12, 13, 15)
EXCESSIVE NOISE AND VIBRATION
(See Probable Causes 3, 6-8, 10, 12, 13, 16 )
PROBABLE CAUSE
1. Motor thermal protector tripped.
2. Open circuit breaker or blown fuse.
3. Impellers binding.
4. Motor improperly wired.
5. Defective Motor.
6. Pump is not primed, air or gas in liquid.
7. Discharge or suction plugged, or valve closed.
8. Incorrect rotation (three-phase only)
9. Low voltage or phase loss.
10. Impellers worn or plugged.
11. System head too high.
12. NPSHa too low-excessive suction lift or losses.
13. Discharge head too low-excessive flow rate.
14. Fluid viscosity, specific gravity too high.
15. Worn bearing.
16. Pump, motor or piping loose.
Troubleshooting