Bell & Gossett P71396C Series 80-SC Spacer-Coupled Vertical In-Line Centrifugal Pump - Manual (Page 20)

Set the inside seal
Unitized inside seal
The position of the unitized seal is set with a snap ring placed on the pump shaft. The
snap ring is positioned on the shaft by a machined groove and no adjustment is possible.
The unitized seal sets directly up to the snap ring.
1
2
3
1. Seal distance
2. Seal cap bolts
3. Seal spring retainer with two setscrews
Multi-part inside seal
1. To set the multi-part inside seal position, set the bottom edge of the spring retainer
the following distance from the shaft shoulder:
• 11/4” seal, set the distance to 1.125”.
• 15/8” seal, set the distance to 1.414”.
2. Tighten the seal spring retainer set screws to 20 in-lb torque to ensure the spring
retainer will hold in position.
3. Lubricate the seal with P80 and slide into place over the shaft.
4. Install the seal cap.
Make sure to tighten the four bolts evenly to avoid misalignment and seal seat
damage.
Set the outside seal
1. Leave the seal holding clips in the seal.
2. Lubricate the seal with P80 and slide over the shaft.
3. Tighten the seal gland bolts evenly.
4. Install the coupling to properly position the pump shaft.
5. Ensure the seal is tight against the seat.
6. Tighten the seal set screws onto the shaft.
7. Remove seal holding clips. The seal is now set.
Keep the seal holding clips in case the seal has to be removed in the future.
Maintenance
18 Series 80-SC Installation, Operation, and Maintenance Manual