Usually the top of the sand filter is above the water level of the pool, so all you have to do is unscrew the top and look in. However if the filter is below the pools water level you will have to cut of the water coming from and to the pool before you do. who added the sand? If you did - did you follow the manufacturer's instructions as to how much and what type of sand to use? Instructions tell you - - SPECIFICALLY - - how many pounds of # 20 silica sand to use.
coarse
how do you clean jacuzzi sand filter, and replace sand
What is a normal operating pressure for a jacuzzi sand filter for an above ground pool?"
distinguish between slow and rapid sand filter
Read the manufacturer's manual on the filter. They give specific amounts of sand for each size of their sand filter configurations. I am not aware of any set formula in general. k My Ranger manual states 18" requires 200 lbs of media.
Nothing if its a sand filter However if sand is coming into the pool from the filter then you may have to replace one ore more laterals in the sand filter as they have worn and are letting sand through to the pool,
Do you mean how do you install a sand filter?.
Water does not filter particles: it is the other way around. Pebbles, gravel, and sand are used to filter water, with the smallest particle size (sand) filtering the most particulates from the water, whether it is salt water or fresh water.
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.
differentiate between slow and rapid sand filters
The filter position is right above the pool return line.
You should be able to, but make sure that the sand filter with the slower flow rate is on top to make sure that the other filter does not overflow. If you place the faster flow rated filter first then slowly the slower one will fill and eventually overflow.