My pump (Sta-Rite Max-E-Pro P6E6E-206L, 1hp, 1.65sf) has been getting noisy the past year, so I thought now would be a good time to upgrade to a two-speed pump. The pump is only 6 years old and since I don't want to mess with the plumping, I want to just replace the motor. My Aqualogic controller appears to be compatible with two-speed pumps and will switch to high speed when the solar kicks on.
Option #1: Reading the manual, Sta-Rite makes a two-speed pump in the same family. The only difference is the motor, impeller and diffuser. sO I could create the same pump by purchasing the same motor (Century UQS1152R, 1.5hp, 1.1sf), impeller and diffuser. Why is the impeller different? Does it have to do with it being up-rated vs full rated? What if I only changed the motor?
Option #2: Century has a newer pump (B2982, 1hp, 1.65sf) which has even lower power consumption. The only caveat is that it is a 56Y pump, but I think I can use the base for the 3hp pump which is also 56Y. If I go this route, can I leave the impeller/diffuser as-is?
I'll probably have more questions when it comes to actually replacing the pump, but I have one question. In the manual, it talks about installing the ceramic seat into the seal plate. Is the ceramic seat part of the shaft seal kit? I've seen pictures online; is that the piece with the spring? I'm sure it will make sense once I open it up, but I'm just curious for now.
Thanks for any and all input.