If you suspect this problem, clean the filter elements and check for obstacles from the thin nylon mesh that covers the septa. Treating the septa with a light acid wash and hose with a strong flow of water will usually alleviate the problem. While most sand filters use several layers of material to clean the water, some models use only one or two layers of filtration. The sight glasses are the transparent part of the tube, which are normally installed in the backwash line that comes out of the backwash valve. They can be installed anywhere on a pipe where you want to see the effectiveness of the cleaning action.
Use this number and the volume of your pool to determine exactly how long you need to run the filter. Larger pools may need more than eight hours, while small pools may need less. Correctly dimensioning the pump is very important to prevent dirt from passing through the sand bed and back into the pool. If the pump is too large, well-worn channels can develop in the sand bed, which can deflect dirt. Like all filters, the tank is pressurized and can be destroyed if the clamp fails or if one of the bulkhead parts becomes loose or cracks. For cartridge filtration to work, the cart must be firmly clamped between the upper and lower plates or manifolds, otherwise water can bypass the cartridge.
Without the waist of the filter, DE, when wet, would become a caked mass, making it impossible for water to flow through. Gently pour the sand through the top of the filter tank. A suitable freeboard prevents sand loss during rewinding. Conversely, if the sand bed is too shallow, the filter will work, but will be quickly loaded with dirt and must be rewound regularly. The service and installation guides provide several tips to help you load the filter. For example, some recommend holding down the vertical tube to make sure it doesn’t come loose when sand is added.
Keeping the filter clean is the easiest way to ensure that the other components work to your specifications and that you end up with a clean pool. Let’s take a look at the cleaning process of each type of filter. In 5-10 seconds, the sand bed is now completely liquid. Note the 6-7 inch “freeboard” between the top of the sand and the bottom of the diffuser.
Other DE filter tanks use two holes in the side of the tank and a separate drain assembly hole at the back. Note that this drain plug also needs an O-ring. Using too much Teflon tape to compensate can tear the lower drain pipe. Water flows through the pump into the filter, which removes dirt, dirt and bacteria.
Based on the principles of centrifugal water filtration, MultiCyclone is a revolutionary new pre-filtration device that captures 80% of the dirt load before it reaches your filter. Able to remove 90% of particles of 30 microns and larger. Things like decks, bubblers, waterfalls, and caves should have special return lines, and in many cases, they also need a special pump to power them. Some pools will contain several water features that require water to be directed to them separately.
When a steady stream of water comes out of the valve, you have released all trapped air. If the flow rate and pressure settings are low, the pump may be substandard or have a clogged pump impeller or fluff trap. It is important to note that problems with the pump or motor can directly lead to filtration problems. A flow meter is a useful diagnostic tool for evaluating filter performance. When transitioning to ED units, poor filtration is often the result of clotting or solidification of the ED.
These figures are based on a standard hydraulic specification of a top speed of eight feet per second. Gradual pressure increases are normal over the course of the filter cycle, if the pressure increase is relatively constant, normal backwash or cleaning routines are sufficient. However, if aquarium equipment the pressure starts to rise faster than usual, it’s time to take a closer look at the elements of the filtration system. Check the filter manufacturer’s specifications, then fill the tank with layers of coarse, medium and fine gravel, followed by the silica sand layer on top as indicated.
