Terry I did a google search on what you have listed as our filter -Haywood C-1200 filter. It is showing a cartilage filter. You will not be able to backwash it. Sand filter you backwash.
Is this what your filter looks like?
Hayward C1200 Star-Clear Plus Cartridge Pool Filter
If so this is what is inside the filter:
Hayward C1200 Comp. Pool and Spa Water Filter Only $62.49
Here is the manual for it
https://www.hayward-pool.com/pdf/manuals/StarClearPlus.pdf
I read where it says to clean it when it is dry. WELLLLLLLLL unless you have another cartilage laying around that will not be able to happen. When I had a filter like that I did not wait for it to dry.
When I cleaned mine I:
-closed all valves coming from the pool so no water comes out.
-opened the drain plug to let the water out (should be on the bottom)
-took cartridge out and sat it on something to keep it off the ground
-used my hose and shoot water all over, inside, all around until the pleats looked almost white again.
-put it back together
-closed drain plug on the bottom
-open drain plug on the top
-open valves to let water back to the filter
-when water comes out of the top drain plug shut it.
-Grab a beer and call it done!
If you and gearhead do not want to sign in and out of each others account don't worry about it. We have several that use one account and they sign their name so we know who we are talking to.
Kim