The outside will stop just into the opening in the rack and should be in the 2nd groove in from the outside. Locate it so that the side with the most curve is on the inside and sits in the corner slot just opposite the opening in the bottom rack. You will want to have all the grids within reach before you start so the assembly does not fall over (I spent more time getting these pictures than putting it together ) I prefer to put the grids back together in the upright position although I hear others prefer to do it upside down … to each their own. This can be frustrating at first, but now only takes me a few minutes. You may also want to remove the drain plug (using a screwdriver in my case) on the bottom of the filter to allow the water to drain out of the bottom of the tank. Open the Air Release Valve on the top of the filter to allow the water to drain out of the filter for a few minutes. Turn off the pump and ensure the timer or automation system will not be able to turn it back on unexpectedly while the filter is disassembled. Note, some setups may include a DE separation tank that will capture the DE before the water comes out. In this tutorial, I chose to skip this step so that I could throw the DE in the garbage instead of spraying it around the yard. Be sure to turn the pump off when changing the valve setting. It is usually good to alternate between backwash and rinse (or filter if you have a plunger) a few times to remove as much DE as possible. Turn the pump back on until the filter sight-glass looks clear. This is done by turning off the pump and turning your backwash valve (plunger or mutli-valve) to the backwash setting. A Hayward DE6020 filter is used in this example. This will not address the bump-type or cartridge-type DE filters. This tutorial will walk you through the process of taking a typical DE filter apart for cleaning and then reassembling and recharging the filter. TFP also recommends disassembling the filter for a thorough cleaning once a year to inspect for problems and to ensure peak performance. TFP recommends backwashing when the pressure rises 20-25% over the clean filter and then recharging the filter with ~80% of the manufacturer’s recommended amount of DE.
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