| Wet End Removal &
Installation, Standard Spa Pump |
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Note that the purpose of this section is to
show you how to remove & install a spa pump wet end and new pump
motor. 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
wet end that you have on your spa is a lot different from what is depicted
here, then do not use these instructions. This is page 1 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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| This example of
wet end removal and installation, is being done with a 3/4 HP Flo-Master pump,
by Aqua-Flo. We are removing an older .75 HP Franklin Electric pump
motor, and replacing it with a new 1.5 HP Magnetek pump motor. We are also
upgrading the impeller size to achieve a higher water flow rate, to take
advantage of the increased horsepower capacity of the new
motor. |
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Most of this is
self explanatory. We remove the face plate of the wet end, and the
armature shaft cover on the back of the pump motor.
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Carefully pulling
the cover plate from the wet end housing, watch for the large o-ring, be
careful not to break it. On the right, we remove the flow isolator
collar. Your pump may or may not have this part.
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| On this particular pump, the
shaft is rusted pretty badly, and we have to use a pair of vice grips to hold
the shaft while we attempt to remove the impeller. |
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| Because it's too tight (due to
rust build up), I resort to using a pair of channel-locks, to remove the
impeller. If this is unsuccessful, there is an alternate procedure at
destructive removal here. |
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| We were successful in this
case of removing the impeller intact. We will be using the same pump
seal, since it was in service for only about a week. What is really
amazing, is the level of rust that had occurred on the pump shaft over the last
few years that the motor was in service. Not very much shaft was left as
you can see in the below picture. |
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Removal of the wet
end is now complete, click to continue to
next
page.
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