I am having issues finding out how to blow out the lines on my Hayward pool. Most of the video's ive been watching are pretty vague and don't say anything about dual line skimmers.
The skimmer at the shallow end has 2 holes in it. But it looks like the one furthest from the pool is a little smaller and it looks like its plugged off from the bottom end up. Must have been done during install. The reason I mention this is because the previous owner had a blowout plug screwed into there. I dont know why..
Anyway the problem is this. The skimmer at the deep end has 2 lines coming into it. I read up on some configurations. The first says that the hole closest to the pool goes to the main drain at the bottom of the pool.
The second configuration says that it could be an equalizer line.
Here is the problem. When I blow into the skimmer line on the pump side, water/air bubbles out of the line closest to the pool. Nothing comes out of the line furthest from the pool. When I blow down , straight into skimmer,the line closest to the pool, nothing bubbles out of the main drain or back through to the pump. Then when i hook the blower right to the furthest line, it doesn't bubble out of the main drain either. I was blowing into the lines at the bottom of the skimmer just to see what kind of setup it is but i learned nothing. This skimmer also has a flat cover with a slotted hole that slides over the one line furthest from the pool. There is also no line dedicated to the main drain in the pump room. It just has 2 lines coming out of the ground in the pump room that T together and then the one line goes into the pump.
Basically I am trying to blow out the main drain and I have no communication with it.