I'm having a vacuum issue all of a sudden this year and I am not sure why - perhaps because I don't know how the system actually works. The vacuum line is in the pool wall with a dedicated port/line. Each year the folks who open my pool warn me to close it saying it's dangerous, system no longer made, now deemed hazardous, etc. I know they are concerned/covering their hide (they installed it in 1990) and all they typically do is remove the valve handle on opening. I of course put it back on.
This year they didn't even put water into the line on opening. When I first ran it is blew tons of air into the pool.
Well they swear they didn't disable it (even though THIS year they tagged it 'do not operate' and want to replumb my p$$l of course to permanently kill it off) but now when I try to use it there is no suction at the port (and thats the usual hazard!) so it's not an air in the hose issue. I cant pick up a thing with it.
Does anyone have a clue? The company wants nothing to do with this 'hazardous' system anymore. I'm naturally suspicious they messed with it even though it is nowhere in their right to do that. They said they didn't.
Thanks for any assistance on what might be going on.