| Wet End Replacement,
Cal-Spa® |
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Note that the purpose of this section is to
show you how to replace a spa pump wet end. 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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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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Typical spa
pump installation. This particular wet end is leaking due to a failed
pump seal. While it is always more advantageous from a cost standpoint to
replace just the seal, it is not always possible to remove the seal and save
the impeller. This repair example covers this contingency, in a worst
case situation. |
If the spa still has water in it,
locate and close water shut-off valves that are connected to the suction and
discharge sides of the pump. In this case, the discharge side shut-off
valve is on the other side of the spa heater and flow switch; (right
picture). |
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On most spas, the pump will have removeable
collars that unscrew from the pump openings. In most cases, you probably
won't be able to remove them with your hands, and may require a nudge with a
screwdriver placed on one of the ridges and bumping it with your fist or palm,
or alternatively, a pair of channel-lock type pliers. Once the couplings
have been removed, you need to work on removing the pump motor from the base of
the spa. There may be screws, bolts, or maybe even nothing at all holding
it to the base. If the base plate is metal, and there are metal screws
holding it down that are corroded (which is usually the case), you may be faced
with the task of using a hammer and chisel or a drill to drill out the bottom
of the plate or wooden base to pull the bolt through. This is NOT
easy! Take your time and have lots of patience.
When the pump motor is loose, remove the
ground wire from the back or the top of the motor.
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Place the
pump on the floor or other suitable working surface. |
Some pump motors may have a shaft
cover on the back. It needs to be removed to gain access to the pump
shaft, which we will need to anchor or turn with a wrench to manipulate the
impeller. |
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Remove all of the face screws from
the wet end. |
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In most cases, it will
be required to use a screwdriver or other thin tool to pry up the edge of the
wet end and separate the two components. Use extreme care to only insert the screwdriver
"JUST ENOUGH" to get the wet end to separate. There may be a
seal in this area that could be damaged. Use the palm of your hand to
extend a little more force to the screwdriver if necessary.
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Carefully lift
the cover off of the wet end, using care not to lose any of the screws.
If there is a rubber seal around the perimeter of the cover, then be sure not
to lose it.
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