2
Replacing Diffuser, Impeller and Seal
A
DANGER:
ELECTROCUTION
OR ELECTRICAL SHOCK RISK.
DISCONNECT ELECTRICITY BEFORE
WORKING ON PUMP, OR SHOCK, BURN
OR ELECTROCUTION CAN RESULT.
Remove power from the pump by turning off the breaker.
Death or serious injury to service people, pool users or
others due to electric shock could result from failure to
avoid the high danger risk.
1. Power must be in the OFF position in the breaker
panel as the unit is hard-wired directly into the power
panel, meaning that is the only way to cut power.
2. Allow the pump motor to cool down before servicing
the unit.
3. Close the water valves, if installed, to isolate the
pump from the system.
4. Separate pump motor and flange from pump volute
by removing the two outer bolts and then the two
outer bolts on the opposing side. Pull the motor and
flange back and away from the volute. See
Figure 1
.
Figure 1. Pump Separation, Bolt Location
5. Using a Phillips screwdriver, remove the three screws
holding the diffuser to the flange/seal plate, freeing
the diffuser for removal. See
Figure 2
.
Figure 2.
Diffuser Plate Separation, Screw Location
6. Remove the impeller center screw using a 5/8 inch
socket wrench. NOTE – this screw is REVERSE
THREADED and can only be removed by turning
CLOCKWISE while holding the impeller stationary.
See
Figure 3
.
Figure 3. Impeller Bolt Removal
7. Removing the impeller requires holding the motor
shaft stationary while turning the impeller counter-
clockwise. A flat screwdriver must be inserted into the
slot in the end of the shaft at the rear of the motor.
An access hole is provided in the center of the rear
motor cover. While holding the shaft still with the
screwdriver, manually rotate the impeller counter-
clockwise to unscrew. See
Figure 4
.
Figure 4. Screwdriver Insertion Point
8. Remove the remaining four bolts holding the flange/
seal plate to the motor, and separate the two. See
Figure 5
.
