aermotor SPCA Serie Manual De Instalación Y Funcionamiento página 9

REMOVING OLD SEAL
1. Follow instructions under "Pump Disassembly".
2. Follow steps 2 through 5 under "Cleaning/Replacing
Impeller".
3. Remove rotating half of seal by placing two screw-
drivers under seal ring and carefully prying up
(Figure 17).
Figure 17 – Remove Seal plate
4. Remove nuts from studs holding seal plate to motor.
Carefully slide seal plate off of shaft.
NOTICE: Be sure you do not scratch or mar shaft; if
shaft is marred, it must be dressed smooth with fine
emery or crocus cloth before installing new seal. DO
NOT reduce shaft diameter!
5. Place seal plate half face down on flat surface and
tap out stationary half of seal (see Figure 18).
Figure 18 – Tap Out Seal
INSTALLING NEW SEAL
1. Clean seal cavity in seal plate.
2. Wet outer edge of Rubber Cup on ceramic seat with
liquid soap. Be sparing!
3. Put clean cardboard washer on seal face. With
thumb pressure, press ceramic seat firmly and
squarely into seal cavity (See Figure 19). Polished
face of ceramic seat is up. If seal will not seat
correctly, remove, placing seal face up on bench.
Reclean cavity. Seal should now seat correctly.
Figure 19 – Press in New Seal
4. If seal does not seat correctly after recleaning cavity,
place a cardboard washer over polished seal face
and carefully press into place using a piece of
standard 3/4" pipe as a press.
NOTICE: Be sure you do not scratch seal face.
5. Dispose of cardboard washer and recheck seal face
to be sure it is free of dirt, foreign particles, scratches
and grease.
6. Inspect shaft to be sure it is free of nicks and scratches.
7. Reassemble seal plate to motor flange. BE SURE it
is right side up.
8. Apply liquid soap sparingly (one drop is sufficient) to
inside diameter of rotating seal half.
9. Slide rotating seal half (carbon face first) onto shaft
until rubber drive ring hits shaft shoulder.
NOTICE: Be sure not to nick or scratch carbon face of
seal when passing it over threaded shaft end or shaft
shoulder. The carbon surface must remain clean or
short seal life will result.
Be Careful That
Motor Shaft Shoulder...
Ceramic
Face
Figure 20 – Protect Seal Faces
9
...Does Not Damage
Seal Face
Carbon
Face
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