TriStar SP3210X15 - Manual (Page 10)

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TriStar ™ Pump Series ___________________ ______________________________ Page 10 of 15
Removing the Impeller (See Parts Diagram on page 11 of this manual for pump component locations.)
3. Remove the motor canopy by removing the two (2) screws and pulling the canopy away from the motor.
4. To prevent motor shaft from turning, carefully place a 7/16" open-end wrench over the two (2) flats on the end of
the shaft.
5. Rotate the impeller screw (item #10) clockwise (note that screw has left-hand thread) and remove. Remove the
impeller (item #12) by rotating counterclockwise.
Removing the Ceramic Seat (See Parts Diagram on page 11 of this manual for pump component locations.)
6. Remove the spring seal assembly (item #13) and seal plate (item #15) from the motor by removing the four (4) 3/8”
x 1” bolts (item #18) that secure it to the motor, using a 9/16" wrench or socket. Remove the motor support bracket
(item #20) from the seal plate (item #15).
7. Press the ceramic seat with rubber cup out of the seal plate (item #15). If tight, use a small screwdriver to tap seal
out.
STOP - Clean all recesses & parts to be reassembled. Inspect gaskets & replace if necessary.
Seal Installation (See Parts Diagram on page 11 of this manual for pump component locations.)
8. Clean and lightly lubricate the motor shaft and seal recesses in the seal plate (item #15) with a dilute solution of non-
granulated liquid-type soap. Gently wipe the polished face of the ceramic seal with a soft cotton cloth. Lubricate the
rubber cup on the ceramic seat and press it firmly into the recess of the seal plate (item #15), with the polished
ceramic surface facing out.
9. Reassemble the motor to the seal plate (item #15) using the four (4) 3/8” x 1” bolts (item #18), and re-attach the
motor support (item #20) to the seal plate (item #15).
10. Gently wipe the black, polished surface of the spring seal assembly (item #13) with a soft cotton cloth.
11. Press the spring seal assembly (item #13) onto the motor shaft, with the black polished surface facing the ceramic
seat.
Replacing the Impeller and Diffuser (See Parts Diagram on page 11 of this manual for pump component locations.)
12. Screw the impeller (item #12) onto the motor shaft in a clockwise direction, and screw the impeller screw (item #10)
into the motor shaft in a counterclockwise direction. Tighten snugly by holding motor shaft with wrench as noted in
step #4. Place the impeller ring (item #11) back onto the impeller (item #12), with flange facing towards the
diffuser (item #9).
13. Place the diffuser (item #9) over the impeller (item #12) and onto the seal plate (item #15), aligning the three pins on
the diffuser (item #9) with the three holes on the seal plate (item #15). Replace the two diffuser screws (item #7).
Replacing the Motor Assembly (See Parts Diagram on page 11 of this manual for pump component locations.)
14. Re-attach motor canopy using the two (2) hex headed screws. Slide the motor assembly, with the diffuser (item #9)
in place, into pump/strainer housing (item #3), being careful not to disturb the diffuser gasket (item #8).
15. Fasten assembly to pump/strainer housing (item #3) using the six (6) 5/16" x 2" bolts (item #17). (Be sure housing
gasket (item #14) is in place, and lubricated. Replace if damaged). Tighten bolts alternately and evenly to 185 inch-
pounds according to housing bolt torque pattern detail.