I got an in-ground pool back in 2011. I have a 2 speed Hayward Superpump sp1610z2msc. It runs 9 hrs day on my timer. Pool is open from mid may to beginning of September. When I opened the pool this year, I noticed the pump is making a high pitched buzzing noise when running on high speed. Its not very loud but its a new noise the pump has never made before. The pump is outside all year long and get the full brunt of weather - Snow, Ice, rain etc...
Should I disconnect the pump and replace the bearings (assuming that's the cause of the noise?) Should I get a new pump? Is this normal as pumps wear, that they get noisier when they age. Water pressure has been fine, and I am meticulous about cleaning my DE filter to maintain the correct pressure.
Should I have been doing maintenance on the pump in the winter? I've never removed it from the system to do anything to it. Its just been running perfect up until this year.