3-6. CENTRIFUGAL PUMP MOTOR (BACKWASH PUMP) AMALIEANCE-continued
b. Using compressed air, blow dust and grit from stator assembly (10) and rotor shaft (12) Wipe rotor shaft
with clean wiping rag
c. Wipe bearings (8 and 15) with clean rag if grease is dry or dirty
d. Clean fan cover (2) vent slots with compressed air and wipe with clean rag.
a. Inspect leads and windings of stator assembly (10) for evidence of cracked or burned insulation Replace as
b. Inspect rotor shaft (12) for loose or burned conducting bars.
d. Inspect shaft end plate (16) and fan end housing (6) for cracks.
e. Using multimeter set to OHMS X1 scale, connect test leads to pairs of motor leads in the following order:
T1 and T2, T1 and T3, T2 and T3
f. If multimeter indication is not 0 ohm for each pair of windings, replace stator assembly (10)
g. Set multimeter to OHMS X1000 scale Connect one lead to stator housing. Connect other lead to each
motor lead in turn
h. If multimeter indication is not infinity for each motor lead, replace stator assembly (10).
Replace all damaged components
a. Install eyebolt (9).
b. Pack two bearing (8).with grease Using arbor press, install bearing (8) on short end of rotor shaft (12).
c. Pack two bearing (15).with grease Install sleeve (13) and retainer plate (14). Using arbor press, install
bearing (15) on long end of rotor shaft (12)
d. Install shaft end plate (16) on long end of rotor shaft (12) and install four screws (19) and ring seal (18)