How To Backwash De Pool Filter

Table of Contents

How to Backwash a DE Pool Filter Step 1: Turn off pool equipment. Step 2: Rotate the valve to the “Backwash” position. Step 3: Turn equipment back on and run the first cycle. Step 4: Turn the equipment off again. Step 5: Rotate the valve to the “Rinse” position. Step 6: Turn equipment back on and run the second cycle.

How long do you backwash a DE pool filter?

Backwashing a sand or DE filter is a simple task. Shut off the pump, set the multiport valve or slide valve handle to the backwash position, roll out the backwash hose and turn the pump on again. Backwash for 3-4 minutes or until the water runs clear, then shut the pump off and return the valve to the filter position.

Do you have to add DE Every time you backwash?

After backwashing, new DE must be added to the filter. Add the entire amount of DE the filter recommends. If you see DE returning to the pool, vacuum it to waste, after it settles. The next time you backwash and recoat, decrease the amount by 1 pound.

How do you backwash a DE filter without a multiport valve?

D.E. Filter without multiport Turn pump off. Open discharge valve at very bottom of filter. Pump/bump handle ten times. Turn pump on for fifteen seconds. Repeat step 1 -4 three times. Close discharge valve. Leave filter running and add three pounds of D.E. to the skimmer that you vacuumed from.

How much DE do I add after backwashing?

If you are replacing DE Powder after a backwash, you will not need to add the full amount – generally around 80%. The grids will have retained some of the DE Power after the backwash, and if you add too much, it may end up in the pool. The best way to assess how much DE Power to add is to monitor the pressure gauge.

Why does my DE filter pressure keep rising?

If your filter pressure is higher than normal, this usually indicates a dirty pool filter. We generally recommend backwashing your filter (or cleaning your cartridges) when the pressure rises 8-10 PSI above the clean start-up pressure. Either scenario will cause the pressure to rise to very high levels.

What happens if not enough DE in filter?

If you do not add enough DE to your filter, then the grids are not totally coated with DE and the dirt that goes into your filter will attach itself right to the fabric on the grids and will not backwash off. This will cause your filter to short cycle (go very short times between backwashing).

Why is my pool filter blowing out DE?

Common D.E. Filter Problems: DE Blow-Back: If DE powder is coming into the pool, you may have torn filter grid fabric. Or, you could have a cracked top manifold, or missing air bleeder. The standpipe o-ring could be missing, or the filter valve could be allowing some DE powder to bypass the filter as you add it new.

How do you remove DE From pool?

This leaves your pool a cloudy, muddy-looking mess. Luckily however, the powder usually sinks to the bottom of the pool. The only way to remove the earth from your pool is to vacuum the pool with the filter release valve open. This will allow the earth to flush from the filter.

How much is a pound of diatomaceous earth?

The normal amounts range from 1 to 1.5 pounds for every 10 square feet of filter area. The commonly-accepted value is 1.25 lbs/10 ft²^″. This equates to 2 ounces per 1 square foot of filter area.

Do you lose sand when backwashing?

Excessive sand coming out when backwashing is not normal. 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. In general, you shouldn’t be losing sand from your sand filter.

How often should a pool filter be backwashed?

“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.

How do you backwash a DE filter with a multiport valve?

Why is my pool pressure high after backwash?

The most common reasons why a cartridge, sand, or DE filter’s pressure rises quickly, even after cleaning or backwashing, is a clogged or blocked filter, algae or old filter elements. If any of these things are wrong, the pressure can rise rapidly in minutes, hours or days.

What should the pool filter pressure gauge read?

The size of your pool, the size of your pump, and the condition of your pool water directly impact pressure readings. Generally speaking, a pressure reading between 10 – 25 psi can be considered normal. Once you have installed a new filter, turn everything on and take a baseline reading.

What happens if you put too much DE in filter?

Adding too much DE to your pool may cause multiple negative results. These ramifications include a clogged skimmer, turning the pool cloudy, reducing the circulatory pressure in the pool and putting too much work on your pump that may result in eventually breaking the pump.