Not sure if I should post on this thread or start a new one, so please advise.
I have the same sort of question. My pump is approximately 12" below full pool water level, so I'm not exactly sure how that affects the procedure to clear the lines. My builder closed for us last year, but I was not able to be there to see what he did. My plan was to use a compressor connected at the pump filter basket set at around 15 PSI and plug each return as it started to bubble. The main drain will continue to empty water from the pool until it reaches the level of the pump? I have read something here about an air lock on the main drain, but don't have a clue about that.
I would appreciate any suggestions. I do not have shop vac with blower port, but I do have a Stihl backpack leaf blower if that is an option.
Thanks.