Every 5 - 7 years you will have to replace the sand in your sand filter. The sand actually wears out. The sharp edges of the sand particles become worn and rounded and don't capture the contaminates as well. Also the sand will start to ball up or the water will create channels thru the sand. You will notice that your pool water is not as clean or the interval between required backwashes is shorter. This guide shows you the steps required to replace the sand in a Pentair Triton 2 Side Valve Sand Filter.
COLLECT MATERIAL - Before you start to change the sand in your filter, be sure to purchase any material or equipment you will need ahead of time. This might include sand, the O-ring between the valve and the tank, Teflon tape, lubricant. For the sand use only high rate No. 20 Silica Sand. An example is pictured at left. Check the manufacturer to determine the amount required. This unit (Pentair Triton 2 TR-60) uses 7 50 lb bags of sand - 350 lbs total. You can also purchase our superior to sand Click here for our Sand Alternative.
VIEW BAFFLE AND AIR RELIEF TUBE - With the Lid off the top of the Filter, you will see the Baffle and the Air Relief Tube. The Baffle distributes the water from the pump over the top surface of the sand. The Air Relief Tube connects to the bottom of the tank and relieves any air that is caught in the top of the tank.
REMOVE SAND - Remove the old sand using a cup or small coffee can, or a medium to high powered wet vac. Dump the sand on a tarp for later disposal. Clear the sand down to the top of the laterals at the bottom of the tank. If you are using a cup to clear the sand, place a cloth on the edge of the tank opening to avoid fiberglass splinters.
CLEAR LATERALS - When you get to the lateral, be careful removing the sand around and under the laterals as they are somewhat fragile and can be broken easily. Clear all the sand away from the lateral so you can inspect them.
CHECK LATERALS - Look at and feel each of the laterals to see if any are damaged. If necessary, remove the questionable laterals and replace them. See our guide on "How to replace Laterals in a Pentair Triton 2 Side Valve Sand Filter".