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Parts Diagram
EXT Pump Parts Diagram
No. Item number/description
No.
Item number/description
No.
Item number/description
1.
Bracket
7
Threaded Rod, 3/8" - 16 x 1.75" Long, SS
13.
Cap
2.
Drain Plug
8.
Motor
14. Seal Seat
3.
Impeller
9.
O-Ring, Volute
15.
Hardware Kit
4.
Seal Head
10. O-Ring, Cap
16.
Impeller Washer Gasket
5.
Impeller Washer
11.
Key, Square, .188" x 1.5" Long, SS
17.
Slinger
6.
Impeller Nut
12.
Volute
1
2
3
6
4
5
7
8
17
11
16
15
12
9
13
10
14
Troubleshooting
• Motor Will Not Rotate
– Check for proper electrical connections to motor
– Check main power box for tripped circuit breaker
• Motor Hums Or Will Not Rotate
– Check for proper electrical connections to motor and
proper wire size according to local electrical codes
– Check for foreign material inside pump
– Remove volute and check for impeller rotation without
excessive resistance and/or noise
– Remove pump and check shaft rotation for excessive
bearing noise
– Check start switch and/or capacitor
• Pump Operates With Little Or No Flow
– Check to insure that pump is primed
– Check for leaking seal
– Improper line voltage to motor or incorrect rotation
– Check for clogged inlet port and/or impeller
– Defective check or foot valve
– Check inlet lines for leakage, either fluid or air
• Pump Loses Prime
– Defective check or foot valve
– Inlet line air leakage
– Seal leaking
– Fluid supply low
• Motor Or Pump Overheats
– Check for proper line voltage and phase, also proper
motor wiring
– Binding motor shaft or pump parts
– Inadequate ventilation
– Fluid being pumped should not exceed 194°F (90°C) for
extended periods of time
