T a b l e 3-3. Water System Troubleshooting - Continued
TEST OR INSPECTION
Step 2. Check for bent shaft, warped impeller, worn bearings.
R e m o v e and inspect volute. Replace defective parts.
4. MOTOR OVERHEATS.
C h e c k for mechanical defects inpumpor motor.
C h e c k motor for easy rotation and straight shaft, and correct
condition as required.
Packing nut too tight, or incorrect voltage.
Adjust packing nut.
C h e c k electrical system and correct
5, MOTOR FAILS TO START OR HUMS.
I n c o r r e c t electrical current.
Pull plug, check for correct current as shown on motor nameplate.
Defective plug, cord or switch.
Examine plug, cord and switch, replace if defective.
Check if unit is extremely cold.
B r i n g unit to room temperature before starting. Assure the
use of the proper weight pump oil for ambient operating
6. MOTOR STOPS DURING OPERATION.
Step 1. Check for defective wiring.
Check wiring and correct.