Depending on the size of the pool and the size of the filter and the amount of times you have to backwash, also if you have had a lot of rain then you may need to backwash more than usual. If you put the pool in and the filter and you know how old the sand is, if you are backwashing more than usual,change the sand. Also before you backwash check the pressure of the water going back into the pool, then backwash check the pressure again the pressure should for any size hayward pump push your hand away if it does not then change your sand.
Depending on what type of filter you have. For example, a Hayward S180 uses 150lbs of sand, S244 uses 300lbs. This information is provided on the sticker that is located on the tank of the filter.
Need to rephrase question.
I have etching in my inground concrette pool and i need to know how to fix it. the pool was made in 1973 i bought the house three years ago.
When its dirty you need to change the filter.
You would need to know the size of the spaces in the filter to work out what will fit through.
A chlorine generator, also known as a salt generator, is an addition to a pool pump and filter system that converts salt to chlorine. It is another method of adding chlorine to a swimming pool. You will still need a filter, like sand, to filter dirt and debris from the swimming pool.
Reverse the fan? Otherwise, need to know the what and where of the filter that was "sucked up."
I need to know
i need to know where to put the new transmission filter to change it
When it is dirty, I know that is vauge but it is the truth.
21.5 x 16.5 x 1
Change the fuel filter first. If that doesn't help, change the fuel pump.