Hayward Variable Speed Pump Owners Manual - Page 27

Seal Installation, Replacing the Impeller and Diffuser, Replacing the Motor Assembly

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9.4. Seal Installation 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. 9.5. Replacing the Impeller and Diffuser 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). 9.6. Replacing the Motor Assembly 14. Re-attach motor fan shroud (item #24) using the four (4) 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. Page 27 of 36 USE ONLY HAYWARD GENUINE REPLACEMENT PARTS EcoStar Variable Speed Pump IS3401VSP Rev-2

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USE ONLY HAYWARD GENUINE REPLACEMENT PARTS
Page 27 of 36
EcoStar Variable Speed Pump
IS3401VSP
Rev-2
9.4.
Seal Installation
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.
9.5.
Replacing the Impeller and Diffuser
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).
9.6.
Replacing the Motor Assembly
14.
Re-attach motor fan shroud (item #24) using the four (4) 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.