Pump Service (Continued)
Pump Disassembly/Removing Old Seal
Disconnect power to pump motor.
Ensure shut-off valves on suction and return
piping are closed before starting work on the
pump.
Release all pressure by opening all vents before
starting work.
1. Drain pump by removing drain plugs on bottom
of pump body and trap body.
2. Ensure there is no pressure in trap body;
remove cover (unscrew by turning handle ring
counterclockwise).
3. Remove clamp holding pump halves together.
Motor and seal plate assembly can now be
pulled away from pump body.
4. Remove five screws and washers holding
diffuser to seal plate. Remove the diffuser.
5. Remove motor cowl and motor fan.
6. Hold shaft with an open-end wrench (or vice
grips) on motor shaft flats.
7. Unscrew impeller from shaft (turn
counterclockwise when facing it).
NOTICE: On models with impeller screw:
Remove impeller screw (left hand thread - turn
clockwise) and gasket before removing impeller.
Inspect gasket for damage, cracks, etc. Replace
if damaged.
8. Pull rotating member of seal off of impeller
sleeve; clean sleeve.
9. Remove four screws holding seal plate to motor.
10. Place seal plate face down on flat surface and
lightly tap out ceramic seat.
11. Clean seal cavity in seal plate and clean motor
shaft.
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