I have a 25K gallon Anthony and Sylvan in-ground plaster pool in Southeastern Pennsylvania that I just purchased last summer 2011. I would like to close the pool myself this year to save some cash. My pool has 2 main drains, 2 skimmers and 2 returns lines and Automatic Pool Cleaner Port. Also, my system allows me to return water to the main drain in the deep end of pool to re-circulate the water. My filter is DE. I am planning to blow out the lines using an air compressor with ~ 20 psi attached to one of the ports in the 1.5 HP pump. I know that I need to do the following:
1) Lower water level to just below the skimmer
2) Drain the DE filer and rinse and removed pleated filters
3) Remove drain plugs from main pump
I know that I need to blow out and plug the
1) Return Lines
3) Automatic Pool Cleaner
4) Main Drain
My question how to drain the lines and when to shut off / open valves ? Last year, the pool closers first plugged the return lines, then the cleaner line, then the skimmers, in that order. But I'm not sure exactly how to utilize the valves to do this, especially with the re-circulating option that came with my pool.
I assume that during this process, the filer positive should be in active mode, or rather NOT in the backwash mode.
Thank you for whatever help can be provided.