Hi, everyone. Like many who post here for the first time, I am a newbie pool owner (got it with our new home) and just learning the ropes. After going through the filter manual and studying some online resources including this forum, I think I have a general handle on the process of opening the pool for the summer.
However. . . .
I've seen a couple of places (including the manual for my filter) mention that you must fully open the "manual air relief valve" until it discharges a steady stream of water. I understand the purpose, to purge air from the lines. Problem is, I can't find the "manual air relief valve." I've looked at the schematic for my filter (Hayward Pro Series High-Rate Sand Filter Model S210T) and it doesn't show a manual air relief valve anywhere.
I've attached the manual for this model in case anyone can point out what I'm missing.
Any help is appreciated. Thank you!