My landlord left and the new landlord has not come to service the pool. Old landlord let it rot for a month before he left. It's been a month since then. I'm trying to clean/service but don't understand the pipes. I need to know how to relieve the pressure, or isolate the filter stack from the filter basket, so I can clean one and both without accidentally draining the pool.
http://ow.ly/i/1U8P4
Assume: The dimensions of the photo correspond to a compass. Top=North.
Southwest red lever is the water IN as it heads to the pool and filer basket assembly.
Southeast drains water from the filter, presumably if I want to drain the whole pool.
The two north ones... I don't know where they go. Probably to the pool but I don't know why there are two of them.
There is also a red level behind the filter stack (the tall black thing) that attaches to that northmost horizontal pipe.
I need to know what to turn in order halt water going to the filter basket (the short black assembly) so I can take it out and clean months of muck out of it.
On top of the filter stack is a PSI meter. It read 30 when I started and now reads 20 since I've accidentally relieved pressure while unscrewing the filter basket and lettering it drain momentarily.
I have put a gallon of muriatic acid in, as advised by the local pool place do to the pool's current status as a swamp and biohazard. However I don't want to move onto the chlorinate/shock stage until I know I can clean the filter/baskets.