| Sta-Rite® Pump Seal
Replacement |
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| Note that the purpose of this section is to show you how to remove &
install a spa pump seal for a Watkins Hot Springs® "Classic"
spa. While every effort is made to be sure that virtually all areas of complexity
are covered, you may find it more difficult or sometimes easier to accomplish this task. Use
common sense. If the pump that you have on your pool or spa is a lot different from what is
depicted here, then do not use these instructions. This is page 3 of this procedure.
Safety Warnings!
| Remove Power from the spa/hot tub BEFORE performing this
procedure. Failure to comply with this requirement, can lead to
electrical shock and/or electrocution! |
Disclaimer
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| The
instructions here are intended for general reference only. Many pumps
are different from the one depicted here, and may require more or less
mechanical effort or knowledge in order to achieve the desired
results. |
READ FIRST BEFORE YOU
CONTINUE
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Pumps and Parts Price Listings:
Complete Pumps,
Wet Ends,
Motors,
Seals,
Impellers,
Kits.
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| Using a
screwdriver knock out the old ceramic seal. |
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With the
copper heat sink removed, lightly sand off the sealing area to remove any corrosion. 100 grit
or higher sand paper works fine. It doesn't take much |
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| Carefully
inspect the impeller for cracking. Sta-Rite impellers are really very durable and will
typically exhibit "checking" with age, (cracking inside that you can't really feel with
your fingers), and seem to go on for years and years, even with obvious internal cracks. This
may or may not be the case in your particular situation, this is merely an observation from a field
technician stand-point. Unless the impeller is really CRACKED, or it's got so much internal
checking that you can't see the vanes, I will usually re-install it. The grey box indicates
where to find the model number on the impeller for exact replacement if yours is
unuseable. |
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Here, you
can use either silicone or Permatex #2 to reseal the base of the heat sink. Note that in this
procedure I installed the heat sink first and then seat the ceramic seal. This is
INCORRECT! What you should do is install the ceramic seal in the heat sink first!
Then install the heat sink as an assembly.
(Even techs make mistakes :-) This demo
procedure will be corrected on the next Sta-Rite sequence that I'm able to get in the
field. |
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| Now press
the heat sink back into the base plate... try using both fingers to get it
seated... |
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If
necessary, lightly tap the heat sink into the wet end... Remember you SHOULD already have
installed the ceramic base seal... |
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 |
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| ..Now, I'm
having to put in the ceramic seal AFTER I've installed the heat sink... |
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I'm
pressing around the edge of the ceramic to get it seated properly. Remember, NEVER touch the
FACE of the ceramic with anything metallic, because you could destroy the integrity of the pump
seal. |
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| Ok, with the
base sealing components installed, slide the spring seal over the armature shaft. Push it
past the threads. Do NOT LUBRICATE this seal with anything besides water! If you do,
then it could end up slipping against the impeller, and eventually overheat, destroying the
seal. Using the screwdriver method mentioned in the previous page, lock the armature to
prevent rotation, then screw on the impeller. Tighten it only HAND TIGHT. The rotation
of the pump motor will keep it tight. |
Click to continue to
next page.
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