We have a 16' above ground pool that we've only had for two years. The intex 637r pump went belly up when the pump was run accidently with no water in it. When I plug it in the motor doesn't even make a noise. I see that replacements of that model are like $40 on amazon. Should I just replace the motor, get the same pump or should I upgrade to a better model. The significant other wants me to install a saltwater filtration unit as well. Would this pump work with such a filtration system? I think the specs say its a 1000 gallon pump. Any help sorting this out in my head would be great.