Xylem IM188 R01 SPM_SPH Self-Priming Pumps - Manual (Page 6)

6
COMPONENTS
Location Description Material Qty.
Case 1½" NPT
1 Case 2" NPT Cast Iron 1
Case 2½" NPT
2 Pipe Plug ¼" NPT
Suction Flange Zinc Plated 1
Case Steel 2
3 Diffuser Seal Ring BUNA 1
4
Diffuser – High Head
Cast Iron 1
Diffuser – Medium Head
5 Casing Wear Ring Bronze* 1
6 Impeller Screw
AISI 300 SS
1
7 Impeller Washer 1
Impeller – High Head
5 HP
8
3 HP
Sil-Brass* 1
Impeller – Medium Head
5 HP
3 HP
9 Mechanical Seal ** 1
10 O-Ring BUNA-N 1
11 Motor Adapter – 140/180 FR Cast Iron 1
12
Hex Head Cap Screw Case Zinc Plated 8
.38 – 16 UNC .88 Lg Motor Steel 4
13 Shaft Sleeve
AISI 300 SS 1
14 Key – Square End
15 Check Valve Assembly BUNA-SS 1
16 Hex Head Cap Screw .31 – 18 UNC .75 Lg
Zinc Plated
4
Steel
1" NPT
17 Suction Flange 2½" NPT Cast Iron 1
3" NPT
* Lead Free
** Consult Factory
TROUBLESHOOTING
FAILURE TO DISCONNECT
ELECTRICAL POWER BEFORE AT-
TEMPTING ANY MAINTENANCE
CAN CAUSE SHOCK, BURNS OR
DEATH.
SYMPTOM
Motor Not Running:
See Probable Causes 1 through 5.
Little or No Water Delivered:
See Probable Causes 3, 4, 6 through 12, 15, 16.
Excessive Noise and Vibration:
See Probable Causes 3, 6, 7, 10, 12, 13, 14.
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.
9. Low voltage or phase loss.
10. Impeller worn or plugged.
11. System head too high.
12. NPSHA too low – excessive suction lift or loss.
13. Discharge head too low – excessive flow rates.
14. Pump, motor or piping loose.
15. End of suction piping not submerged.
16. Check valve damaged.
WARNING
Hazardous voltage
can shock, burn or
cause death.
2
15 3 4 5 7 14 8 9 6 10 11 12 12 13
16
2 1
17
2
COMPONENTS TROUBLESHOOTING