Series 3656SP Repair Parts
Item
Description
Number
100
Casing
101
Impeller
108
Motor adapter
126
Shaft sleeve
178
Impeller key
198
Impeller bolt (self-locking)
199
Impeller washer
347
Guidevane
349
Guidevane seal ring
351
Casing/adapter gasket
371
Hex head cap screw (adapter/motor)
371A
Hex head cap screw (adapter/casing)
383
Mechanical seal
408
Pipe plug
1
⁄
" x
3
⁄
"
4
4
459
Fillister head screw
Trouble Shooting
WARNING
Material
Cast iron
Bronze
Cast iron
Stainless steel
Stainless steel
Hazardous voltage
Stainless steel
can shock, burn or
cause death.
Stainless steel
Bronze
SYMPTOM
BUNA-N
Motor Not Running:
Composite
See Probable Causes 1 through 5.
Steel
Little or No Water Delivered:
Steel
See Probable Causes 3, 4, 6 through 12, 15.
John Crane Type 21: 1
1
⁄
"
4
Excessive Noise and Vibration:
Plated steel
See Probable Causes 3, 6, 7, 10, 12, 13, 14.
Stainless steel
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.
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.
FAILURE TO DISCONNECT
ELECTRICAL POWER BEFORE
ATTEMPTING ANY MAINTENANCE
CAN CAUSE SHOCK, BURNS OR
DEATH.
5