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With screwdriver in the slotted end of the pump shaft,
turn the unit over (clockwise) before replacing plug (18).
It should turn with no resistance except that of the shaft
seal.
TROUBLESHOOTING
FAILURE TO DISCONNECT AND
WARNING
LOCKOUT ELECTRICAL POWER
BEFORE ATTEMPTING ANY
MAINTENANCE CAN CAUSE
SHOCK, BURNS OR DEATH.
Hazardous voltage
can shock, burn or
cause death.
SYMPTOM
MOTOR NOT RUNNING
See Probable Causes 1 thru 5
LITTLE OR NO LIQUID DELIVERED
See Probable Causes 6 thru 1
ExCESSIVE POWER CONSUMPTION
See Probable Causes 3, 1, 13 & 14
ExCESSIVE NOISE & VIBRATION
See Probable Causes 3, 6, 7, 10, 13, 15 & 16
PROBABLE CAUSES
1. Motor thermal protector tripped
2. Open circuit breaker or blown fuse
3. Impeller binding
4. Motor improperly wired
5. Defective motor
6. Pump is not primed, air or gases in pumpage
7. Discharge, suction plugged or valve closed
8. Incorrect rotation (3 phase only)
9. Low voltage or phase loss
10. Impeller worn or plugged with debris
11. System head too high
12. Incorrect impeller diameter
13. Discharge head too low — excessive flow rate
14. Fluid viscosity and/or specific gravity too high
15. Worn bearing
16. Pump, motor or piping loose
5
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