This cutout will line up directly above the hole in the top manifold that connects to the standpipe. Now take the bottom spreader or bottom plate and work it over the grids, lining up the cut-out in the bottom plate for the standpipe.
When they are all in, it will look like the picture above.
Then push the remaining grids into the manifold. Place the partial grid (aka small grid) first in front of the assembly to make room for the standpipe.
Reassembling it upside-down will allow is much easier, trust me! Using two small bricks makes it easier to keep it steady, without damage to the manifold or air relief. Start to reassemble grids by placing the top manifold on the ground, facing up. Reassemble the Assembly With the New Grids The nuts that are threaded onto the bottom of the bolts should lock into the underside of the spreader bottom plate. Leave the long bolt(s) through the bottom piece to prevent losing or misplacing it. No problem if they do, just pluck them out with your fingers or pliers so that the new grid will fit into the hole. Identify the hole in the manifold where the small grid connects and make note for when you replace it.īe sure that the plastic tips of the grids do not snap off inside the manifold when removing them. Then the filter grids can be pulled out of the bottom and discarded. Remove the nut(s) on the top manifold and then gently pull off the top. Be sure that the air bleeder sock, or strainer, is intact, located on top of the manifold. Take some time to inspect the manifold and lower spreader plate for any cracks or damage.
#Hayward de filter grids crack
Try not to let it fall over or it may crack the top manifold. Place the assembly on a soft area to protect the top and bottom of the assembly. If the assembly is heavy, use a hose to spray off more of the DE powder, especially in between the grids, before lifting it out. You should have already backwashed the filter before removing the filter lid. You may see two areas that say “lift here” on either side of the manifold. You may need two hands to lift the grid assembly out of the tank. When the lid is popped off, carefully and gently set it aside. You may need a large, flat screwdriver to help pry to clamp band off the tank and to assist in separating the tank halves. Open the air bleeder a few turns to reduce the pressure and allow the water to drain out of the tank. Once the brass nut it loosened completely off the screw, the band can be removed from around the filter tank halves. Most DE filters have a band that holds the top to the bottom that can be loosened with a socket wrench. The last thing you need when taking apart a filter is water spraying everywhere. Open the Filterīefore doing anything else make sure your pump system is turned off. That may sound overly simplistic but those are really the only things that you need to do to replace your DE grids.
#Hayward de filter grids how to
This blog post is about how to replace DE filter grids yourself. Or, you can replace just the DE grids, for less than half the cost of replacing the entire assembly. It comes assembled to drop right in the tank. Order the grid assembly for your make, model and size. You could replace the entire grid assembly, which is all of the grids, the top manifold and the bottom spreader plate, all bolted together. The filter grids may develop holes or become unstitched and clogged with oils and minerals. This is usually after 7-10 years of hard work. Those with DE filters are probably extremely happy with the quality of water that a DE filter creates, but there comes a time when you will need to replace the filter grids.
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