As a swimming pool sand filter suppliers, The sand filter is the main machine for a swimming pool to clean and cycle the swimming pool water. and i would tell you how to install a pool sand filter! This guide describes the steps required to install a swimming pool sand filter suppliers from the fenlin swimming pool sand filter suppliers.Pool sand filters are very useful for keeping your swimming pool clean. Fenlin Pool sand filters can be installed very easily and do not require much labour. Step 1 Before starting installation, you will need to purchase sand. Use only high rate Silica Sand. Step 2 When installing the pool sand filter, you will connect it right after the pump. Pool water will come in through the pool pump, be filtered through the sand filter and released to the chlorinator before returning back to the pool. If you have a pool heater, the pool filter will release water to the heater before going to the chlorinator. Step 3 The pool filter should be installed on a level concrete slab not more than 6 feet above the pool water level. Position the pool sand filter so that the piping connections, multiport valve and drain are convenient and accessible for operation and maintenance. Place the filter next to pump. Step 4 Before you connect the pool sand filter into the piping system, you have to assemble the filter. First screw the pressure gauge to the 1/4" hole on the side of the filter. If the threads aren't prepared, wrap them with two layers of Teflon tape. Start in a clockwise direction at the first thread with a half width overlap for the full length of the thread. Be careful when screwing the gauge on. Use a wrench on the square nut on the final turns. Step 5 Make sure drain cap is securely in place. Step 6 Fill tank about 1/2 way full with water to provide a cushion when the sand is poured in. This will help protect the laterals. Step 7 Next you will be installing pipe and lateral assembly inside the tank. Separate the valve from the pipe and lateral assembly. Also make sure the 10 laterals at the end of the pipe are rotated up. They have to be in their up position to fit through the hole in the top of the tank. These laterals are somewhat fragile. Ensure that none are cracked or broken. Place the pipe and lateral assembly inside the tank. Step 8 After the lateral assembly is inside, carefully rotate the 10 laterals 90 degrees in their down position. Step 9 Make use the pipe is centered in the opening. Tape the top of the pipe to prevent sand from entering and clogging the laterals. Step 10 The sand filter package comes with a cardboard sand shield. Place this over the pipe and within the opening. Step 11 Pour sand carefully into the pool sand filter until laterals are fully covered. For this unit 3 bags should leave at least 6" space between the top of the sand and the top of the filter. Level sand as you pour and make sure the center pipe remains centered in the opening. Be careful when leveling the sand that you do not lift the pipe and lateral assemble up off the bottom of the tank. You will not be able to push the pipe back down without causing the laterals to rotate up. Step 12 Lightly lubricate the valve/tank O-ring with a silicon lubricant and place it on the underside of the valve. Step 13 Remove tape from top of pipe. Slip the Multiport control valve onto the central pipe - check the O-ring to ensure it is positioned correctly. Step 14 Install clamp around the tank and valve flange. Loosely tighten clamp so that the valve can be rotated on the tank for final positioning.