"When do we need to backwash?" - It is recommended to backwash your filter once every 4-6 weeks of regular use. Additionally, there are several instances that would require backwashing in between the normal monthly backwashing.
Most D.E. filters should back-washed after one to three months of use, or after the filter has built up 5–10 PSI of pressure. You should also dismantle and clean the D.E. filter at least once a year. Depending on usage—especially if your pool is open year-round—you might need to clean the filter twice a year.
To backwash, a sand or DE filter, turn off the pool pump and attach a backwash hose. Then set the valve to “backwash”, switch the pump back on and let the water flow out until it is clear (usually about 2 mins). You'll need to next set the valve to rinse after for about 30 secs.
The 'Rinse' setting should be used after backwashing and again run just for a minute or two. On this setting the water is flowing through the filter in the normal direction but once again is being sent to the waste pipe rather than being returned to the pool.
Rinse runs water in the same direction that normal filtering does. Backwash runs it through the sand in the opposite direction. Rinse is to clear any dirt out of the clean side of the sand before you start sending it back to the pool.
Drain/Waste: Opting the drain or waste setting will remove pool water without forcing it through the filter. Backwash: This clears out any debris, dirt and other contaminants that may have accumulated on the filter. Closed: if you choose this setting, then the flow of water to the pool and filter will be stopped.
Backwashing is a pool term used to describe a filter cleaning method which reverses the flow of water through your filter system.
Can You Backwash Too Much? If you backwash your pool too much i.e. time duration and/or close frequency then yes you can cause a lot of problems. Some problems that can arise from backwashing your sand pool filter too much are: Loss of water – 500+ litres of water can be lost in each backwashing cycle.
As a general rule, you should be backwashing your pool about once a week or in conjugation with your scheduled maintenance. Another industry standard is to backwash when your filter's pressure gauge reads 8-10 PSI (pounds per square inch) over the starting level or “clean” pressure.
If the pool is affected by algae, the pool filters can get clogged very quickly. Algae are tiny aquatic plants (or organisms) that grow in pools and in large groups. These plants can clog up the filter easily during pool water circulation.
On average, sand should be replaced every 3-5 years. This may be longer if the pool stays clear, or shorter, if the filter runs all the time. The jagged edges of the sand wear down and become smooth as the sand ages.
The build-up of unwanted particles often results in increased pressure to the filter reducing its efficiency – it can lead to damage. Backwashing a pool dislodges any contaminant and debris and pushes them out into a hose via the pool pump or the waste line.
Turn the lever to RINSE, start the pump and rinse for about 15-30 seconds. Stop the pump and turn the lever to FILTER. This is the normal operating position. Close the drain outlet valve and start the pump.
Backwash only as needed. Brush the pool vigorously, several times after shocking the pool. Do not use a solar blanket until chlorine and pH level are normal. If chlorine level drops to zero within 24 hours, Repeat the shock treatment.
When you first install a sand filter or renew the sand, you may indeed get a small amount of sand coming out when backwashing, rinsing or filtering. Often, excess sand gets into the wrong places when refilling and will sand to come out into the pool or out of the backwash hose. But it should go away after a few runs.
Your filter may be clean and normal at 9-10 psi, but your neighbor's filter gauge could run higher, and be clean at 15-16 psi. Some systems with very low resistance can run very low pressures, barely registering, while other filter systems can run quite high, pushing 30 psi when the filter becomes dirty.
Every pool must turn over at least once a day, so most pool pumps should run approximately 8 hours a day. But here's the thing: you don't have to run your pool pump consecutively. You can choose to run it for three hours in the morning before you leave for work and another 5 hours in the evening.
Cartridge pool filters cannot be backwashed and must be cleaned by hand. Because they were not built for reverse water flow, cartridge filters can't be "backwashed" simply by reversing the water flow in the pool's filter system. These filters must be cleaned by hand when they are dirty.
Vacuuming to WASTE can only be accomplished if a multiport valve controls your pool filter system. This position bypasses the filter and sends all the unwanted debris through the waste line. Note: Vacuuming to WASTE drains the pool, so keep an eye on your water levels.
8. Vacuuming pool with filter valve in "backwash" position. When a pool is vacuumed with the sand filter valve in the "filter" position, the dirt and debris that passes through the pump ends up inside the filter on top of the bed of sand which is where you want it.
Yes, we recommend backwashing after you vacuum your pool. This allows the filter to shoot out any dirt / debris you have vacuumed up. Don't forget to set your filter to “rinse” for 30 seconds after backwashing!
Do not operate your filter pump without having the D.E. powder coating the grids, or you will see the filter pressure rise very quickly, and if left in this manner the grids can collapse or the fabric can become clogged or damaged. As the pressure gauge on a D.E. filter increases, flow rate decreases.
It's important to pour in at least 1/2 gallon of vinegar. You might have to pour in more than a half gallon of vinegar if you want a 50% concentration. The filter needs to be soaked for 3 hours.