how do you clean jacuzzi sand filter, and replace sand
distinguish between slow and rapid sand filter
Water is meeting more resistance as it is making its way through the filter media usually indicating that the filter needs to be cleaned. Some times in the case of sand filters it indicate that the sand needs to be replaced.
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?.
If you have a sand or DE filter the setting is filter in the case of cartridge filters it is filter as always unless there are other settings for your particular setup.
differentiate between slow and rapid sand filters
The pressure gauge will generally read 10 PSI higher than when the filter was clean. In any case do not let the filter gauge go above 40PSI.
Im not an expert by any means but what I know is that with a sand filter system if your pump is not the corect HP for the filter it will push dibris and sand right back into the pool answer:: That may be true in remote cases where the system was not installed correctly or had well balanced/matched equipment. The correct answer would most likely be that you have a broken lateral(s) which allow sand to pass back to the pool. It is best to find the correct type lateral for your specific filter. Some manufacturers have made modifications to same model filters as production and technology progresses. Replacing the lateral required turning the equipment off and making sure it will not come back on while it is being worked on. Removing the filter top or valve assy. Removing all sand, finding the damaged lateral(s), replacing lateral, replacing the sand with new sand in the correct manner, replacing the valve or filter top and starting the equipment and backwashing the filter to reduce the dust blow back K
If you have a sand filter the laterals in it may be starting to show signs of wear these wil blow sand from the sand filter into the pool when they wear out.
Your filter will tell you on the side of it how much media sand to put in it.
Sounds like it may have cleaned up some pipes and/or filter sand. If that's the case, be sure to backwash your filter.