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How to replace a pool pump

Replacing a pool pump is a relatively simple task and requires just a few tools including a screwdriver, large adjustable wrench for the plumbing connectors (optional), and possibly a needle nose pliers and wire stripper for the basic wiring part of it (optional).
 
However, before replacing the pool pump, it is worthwhile to check if the pump is beyond repair.

Pool Pump Won't Start - Is it time to replace the pump?

If the pool pump won't start or keeps tripping the breaker, see if the impeller is jambed.

reaching pool pump impeller from the trap First, reset the breaker.  It may have tripped if the pool pump overheated.  If the pump still doesn't start but there is a slight humming noise at the motor, then there is electricity flowing to the motor.  Most likely the impeller is stuck.  Turn off switch.  Remove pump trap lid and basket. Let the water drain out of trap. Take a screw driver or something that you can reach in with to see if you can turn the impeller.  If there is a rotation arrow tag on the pool pump, then try turning the impeller in the same direction.  Since there isn't much room to work, it may difficult to work the impeller free with this approach. It depends on the model of the pool pump.

 

 

remove base to reveal impeller If you can't reach the impeller or can't turn the impeller from the pump trap opening, then try getting to the impeller from the back.  Remove the base seal plate bolts with a wrench and gently pull the plate and motor base back about 2 inches to reveal the impeller. 

 

 

 

how to repair stuck pool pump impeller Reach in and turn the impeller to see if it moves freely. Place a flat screw driver in the grove and push down turning impeller in same direction as the rotation arrow tag.  Also remove any noticeable debris stuck between the slots of the pool pump impeller as you rotate the impeller around.  Use a flat screw driver to poke out the debris.  Once it seems to move freely, then put everything back together and proceed to prime the pool pump.  




If pump won't start and there is no humming noise at the motor, then there could be a loose wire at the connection, or the motor could be shot.  

Check your owner's manual to see if there is any other troubleshooting advice.  If you do not have an owner's manual, then search the internet for your pool pump name and serial/model number.  Sometimes the manual can be found online. You could also contact your pool installer to see if they have any suggestions or recommendations. 

remove pool pump motor end cover to reveal wiring If you suspect a loose wire is the problem, then turn off the breaker to the electric supply for the pool pump.  Remove the motor end cover to reveal the wiring.   See if any wiring connections are loose.  If so, then re-attach wiring.  If it is a wire to wire connection, then twist exposed wire ends back together, apply some black electrical tape to hold in place, and attach a small wire nut to secure.  Otherwise, secure wire directly to the wire panel screw.  You may need to refer to the owners manual to see exactly which screw on the panel the wire goes to.  When done, re-attach the motor end cover.  Make sure pool pump switch is off, then turn breaker back on.  Turn the switch on for a few seconds to see if it is now working.  If so, then turn off and proceed to prime the pool pump.

If it appears that the motor is shot, then you'll need to replace the pool pump.  You could just replace the motor, however for the cost, you are better off replacing the whole pool pump.

Replacing a Pool Pump

First, located the make, model, and serial number of the current pool pump. See if you can find this same pool pump online.  For your convenience, we affiliate with reliable same day delivery online pool supply stores

The benefit of using the same pool pump is that you won’t have to change the plumbing connections. Once you located the same pool pump online, search for the best price and order. If the current pool pump is not working at all, then you can begin removing it.  Disconnect the power source to this pump.  Then remove the motor end cover which will reveal the wiring. Notice if the wiring panel contains a dual type terminal board. If it does, then take note of the terminal setting. It should either be set to 230 volts or 115 volts. Also take note of how the wiring is connected.

When your new pump arrives, disconnect the old pool pump at the plumbing connections. You should be able to unscrew the connectors by hand. If you need to use an adjustable wrench to loosen, be careful not to break the connectors.  Turn counter clockwise to loosen.  If you have the connectors loosened and the wiring disconnected you should be able to remove the old pump.  Place the new pump into position and remove the end cover of the motor. Attach the wiring the same way as the old pump unless the wiring panel is different from the old one.  Read the wiring connections instructions first.  Then set the dual type switch (if applicable) to the same setting as the old one.  Either 115 volts or 230 volts.  Attach the motor end cover.  Attach the plumbing connections and tighten by hand.  If all is connected, you should be ready to prime the pool pump.

Note:  If you can't find an exact matching pool pump, then order a pump that closely matches your current pump.  When the new pump arives, see what if any plumbing adjustments you'll need to make.  Most likely, you'll be able to find replacement piping and connectors at Home Depot, Lowes, your local hardware store, or a pool supply store. 

With the Virginia Graeme Baker Pool and Safety Act, some manufacturers of pool pumps have added a safety feature that causes the flow to reverse, or stop when sudden suction occurs.  This safety feature is to prevent someone from getting caught by suction on a pool floor suction. Eventually, all new pool pumps will contain this feature.  This feature is worth the extra cost.  Most new pumps are also more energy efficient.  If you run your pump 24 hours a day which is recommended, then the newer more efficient pumps will pay for themselves within a few years.  

 


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