Determine the seal size – Xylem P81547D Series 90 In-Line Centrifugal Pump User Manual
Page 20
WARNING:
Make certain that the internal pressure is relieved before you continue.
Failure to follow these instructions can result in serious personal injury
and/or property damage.
11. Remove the volute capscrews and remove the pump assembly from the volute.
Determine the seal size
All seals, except the 1.25 in. (3.16 cm), require a spring retainer as part of the seal
assembly.
1. Determine if you have an A or AA-type pump using these diagrams and refer to these
diagrams whenever seal replacement becomes necessary.
The primary feature that distinguishes the A from the AA-type pumps is size. Most
components of the A and AA pump seals are similar, but not interchangeable.
1
2
3
4
5
6
7
8
9
10
11
12
13
14
1. Shaft
8. Volute
2. Slinger
9. Impeller capscrew
3. Bracket coverplate
10. Gauge tapping
4. Volute capscrew
11. Suction
5. Discharge
12. Volute gasket
6. Companion flange
13. Seal assembly
Maintenance
Series 90 Installation, Operation, and Maintenance Manual
19
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