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Removal and Replacement of the Impeller and/or Mechanical Seal
2. Turn OFF any valves to prevent pool water from reaching the pump. Drain water from the pump by loosening the unions
or removing the drain plugs.
3. Remove the eight (8) screws connecting the pump casing/strainer tank to the flange.
4. Pull the motor and flange/seal housing out from the pump casing/strainer tank. Remove the pump casing o-ring. The
impeller is connected to the motor shaft.
5. Remove the diffuser by gently pulling the diffuser (the diffuser is the cover over the impeller) horizontally until the pins
clear the seal housing.
NOTE: Only Model ES90-II VSP and Model E90-II VSP have a diffuser.
6. Place a flat head screwdriver through the center hole of the
fan cover and into the screwdriver slot on the motor shaft.
7. While holding the motor shaft, turn the impeller counter-
clockwise.
8. Gently pull the mechanical seal from the impeller shaft noting
the way it was originally installed.
Figure 3
CAUTION: DO NOT damage the ceramic or carbon sealing surfaces of the seal. If the sealing surfaces are damaged, leaks
will occur.
9. Using water with a small amount of dish soap, brush the impeller shaft for ease of assembly.
10. With the carbon side up, push the mechanical onto the impeller shaft and wipe carbon surface with a clean cloth.
CAUTION:
DO NOT use grease or lube to install seal. It will damage the seal and cause failure.
11. The ceramic side of the seal can be pushed out from the rear of the seal housing. Please note its position before removing.
12. Using water only, wet the ceramic side of the seal and using your thumbs push into the seal housing. Clean surface with
a clean cloth.
13. Wipe the motor shaft of all debris and apply a single drop of Loc-tite to the motor shaft threads.
14. Install impeller by spinning it clockwise onto the motor shaft. Continue to turn clockwise until the carbon and ceramic
sides make contact and the seal spring slightly compresses.
15. Install the diffuser by aligning the diffuser pin with the holes in the seal housing and pressing together.
16. Make sure the diffuser and casing o-rings are in place and free of debris. Slide the motor flange into the casing.
17. Install the eight casing through bolts and nuts using a cross pattern from side to side and top to bottom.
CAUTION: DO
NOT over-tighten.
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Sealing
Surfaces
Rubber Collar
Spring
Assembly
Ceramic Ring
Impeller
Shaft
Содержание 1.1 THP Dual Voltage Series
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