There forums are awesome, I've learned a lot. That said, I'm hoping someone might have some insight into an issue I'm currently dealing with. I'm in the process of blowing out the lines on my pool and have been able to blow out the returns in the pool, but only by blowing the shop vac into one of the jets at the side of the pool and plugging them as they blew. They all blew quickly (it's a fairly small pool) and i was able to complete that part.
However, I have been unable to blow out the skimmer line. I've been trying to blow air down through the skimmer, but can't get any blow out at the pump. I don't have any valves that I'm aware of on the entire system (but I'm including pictures of the system below if someone can verify), so I'm not sure what the issue is. The skimmer does have two holes, but based on the other forum posts I've read it's the hole furthest from the pool edge that goes back to the pump. I think I'm getting a good seal, but just nothing coming out. I also tried to unhook the connection at the front of the pump to try and blow it out from that side, but I haven't been able to get it loose (and don't want to strip or crack anything) and there isn't any flexible piping on that side that I could move to put the vac nozzle into.
Does anyone have any advice on what I may be doing wrong? Also, does anything need to be done to winterize the second hole in the skimmer? It seems to go down about 18-24" and then stops so I don't believe it goes to the main drain.
Any help would be appreciated!
P.S. I've also yet to locate the connection for the main drain. There is one piece of PVC that's sticking up in the pad with a cap on it. Could that be it?