Bell & Gossett P71396C Series 80-SC Spacer-Coupled Vertical In-Line Centrifugal Pump - Manual (Page 23)

1
Figure 6: Coupling
1. Gap
Note: Couplings use either four, six, or eight bolts depending on the motor size.
8. Tighten the bolts evenly to avoid misalignment.
9. Rotate the shaft by hand and make sure the gap on both sides of the coupler is
approximately equal.
If the gap is not equal, loosen the bolts and repeat the tighten step.
10. Make sure that the gap from the top to the bottom of the coupling is equal.
11. Slowly rotate the shaft by hand and check to see if any rubs occur.
• If no rubs occur, prime and start the pump for two minutes and determine if the
pump runs smooth and vibration free.
• If problems occur, check installation of the coupling and repeat as necessary.
Replace the seal
The inside and outside seal can be replaced without removing the motor.
1. Remove the coupling guard.
2. Remove the flush line from the seal cap.
3. If an outside seal, put seal clips in the seal and then loosen the set screws that hold the
seal on the shaft.
4. Remove the coupler halves. Tape the collar rings together in pairs as assembled
previously.
The shaft drops down when the coupling is removed.
5. If an outside seal, remove the seal.
6. Remove the seal cap or seal gland through the space between shafts.
a) Remove the seal seat from the seal cap or gland.
b) If an inside seal, remove the seal using a pair of screwdrivers, to pry out the seal.
7. Clean the seal box, seal cap, or gland and shaft.
CAUTION:
Avoid touching the carbon face and ceramic face of the seal and
getting it dirty.
8. Place the seal seat in the seal cap or gland. Use P80 with an inside seal.
Maintenance
Series 80-SC Installation, Operation, and Maintenance Manual 21