I started the process of opening my pool for the season. Things were going well until I engaged the sand filter (Haywood model). Yesterday I just had the system turned to waste mode to clear the antifreeze out of the lines and then turned it to recirculate to get the air out the lines etc. Today, I switched it to filter but then water started pouring out of it. See pictures attached.
That was this morning and I didn't have time to investigate as I had to go to work so I shut things down. After work today, I turned the pump back on and almost immediately the sand filter started leaking again. This time I let it run for a bit while I got a hose to the pool to add water. I come back maybe an hour later and miraculously the leak has stopped.
I guess my question is, should I be concerned? Is their a seal inside the unit that needs to be wet before it works properly?