Wondering if you can help with this one...
When I open up the pump strainer basket, there is a most disturbing gurgling noise and all the water in the sand filter drains away. I'm sure this didn't happen last year.
All the piping downstream of the pump is brand new this year. The only old things are the sand filter and the multiport valve. There doesn't seem to be a problem with either when the pump is running.
The MPV is on its last legs as the handle spring seems a bit knackered. Also, I know the folks doing the pool last year got into the habit of taking the spider gasket apart and smearing it with vaseline, which won't have done it any favors.
Is it normal for the water to drain away like this? If not, is the MPV likely to be the problem, or should I be looking elsewhere?
Thanks for your help, I love this place!