Hayward sandfilter is leaking - Hayward S220t Top Mount Pro Series Sand Filter 22" Tank Include Top Mount Valve

If you have not already done so, use teflon tape on the threads for the outlet port. This may solve your problem. Good luck!

If you can put some food coloring in it so you can see the leak better and you find a crack in internal or external on both fitting; may be find the parts are warn down some and may need some plumming tape put on them or replaced.

I would let it run for about a minute depending on how clogged it was. Our backwash drain is very visible so we can see when the dirty water has left the filter, usually about a minute or two.

Hello
It is not uncommon to have a bad o ring.But to have 7 pvc leaks is not common.This would be due to a poor installation job.
There should be no leaks after install of a new pump.

THIS IS A DEFINITE FLAW IN THE FILTER CHANGING THE SETTING WHILE RUNNING WILL DAMAGE THE SPROCKET SETTING UNDER THE HANDLE NOT CRACK A SEAM THE ONLY OTHER REASON WOULD BE IF FILTER HAS FROZEN

http://www.haywardnet.com/products/Manuals/pdfs/Manual119.pdf

is the pump leaking from the lid if so you may have an obstruction **** as dirt leaves or debree if the pump is leaking where the motor meets the wet end of the pump then you need to replace the ps1000 seal not sure if ps1000 will work on hayward but when you go to buy one. tell the pool store employee that you need a ps seal for an hayward.