Replacing a pool pump
Had the pleasure of replacing a pool pump today. Fortunately this pump was replaced once under warranty so I got to watch the pool people do it previously, so I realized the impeller housing does not have to be removed.
This is a Pentair LA01N pump, used to run the automatic pool cleaner (Pentair Kreeoy Krauler Legend). I purchased it on Amazon for $250. The pool company would have charged $350 for the pump, and $125 to install, with a 2 year warranty. I purchased a 4 year warranty through Amazon for $15.
However before purchasing a new pump, troubleshoot the original pump and realize this is a 220v pump with a double pole 20amp circuit breaker. If you are unfamiliar with working with electrical components, hire the pool people to do it.
Check the electrical connection with a volt meter and make sure both phases are powered and/or the CB has not failed. Secondly, replace the capacitor (
https://en.m.wikipedia.org/wiki/Capacitor) which is a small cylinder that has two terminals and simply unplugs. It is found in the black protrusion on top of the pump. Two screws hold the cover on. These fail often and cause the pump to stop working. I’ve restored two pumps and a ceiling fan to working order by replacing the capacitor.
Capacitor
Disconnect the electrical connection (top image) at the back of the pump.
The pump impeller casing is tied into the pool piping (top image) and to replace that would be a real pain. However if the stainless nuts and bolts around the housing are removed (top image) the pump and it’s impeller can be easily removed (image below), leaving the impeller housing in place connected to the piping.
When the original pump is removed water from the pool filter will start to flow out slowly, so have the new pump ready to slide into place and reconnect the impeller housing nuts and bolts. Make sure the gasket on the pump half of the housing does not become dislodged when it is bolted to the impeller housing. Reconnect the electrical wires, and the exterior ground wire if there is one and hopefully you will have a pump that runs!