Sand in my waste water

The Hayward Pro Series Sand Filter uses an O-Ring on the stand pipe to separate water returning to the pool, after being filtered, from water coming into the filter from the pool. If this O-Ring is broken, missing or sufficiently worn, small particles of dirt and sand can by-pass the sand filter and return to the pool without being properly filtered by the sand filter.

This can be especially evident just after backwash and rinsing of the sand filter bed. During this time water flows up through the sand bed, opposite the direction in normal operation. This forces the top-most material of the sand bed to dislodge and wash out of the filter to waste. It can also force fine particles to enter through a faulty O-Ring into the pool return stand pipe. Then, when returning the filter system to normal operating mode, those fine particles enter the pool through the water return piping and collect on the bottom of the pool -- mostly small sand particles but potentially filtered debris particles that were captured on top of the sand bed.

To avoid this problem it's wise to replace this O-Ring every few years. And make sure to follow the manufacturer's recommendations regarding the amount of sand to fill when replacing sand. It's important to keep the top of the sand bed at the correct level to insure proper filtering and minimize stray particles coming back into the return water.

turn filter off turn multiport to backwash turn pump on you should see water coming out of the waste line (make sure you have a hose on it with clamps) run for a coupleof minutes until water in sightglass goes from dirty to clear turn off pump turn multiport to rinse turn pump on run for 30 sec then turn off turn multiport to filter then turn back on thats all

Always vacume on waste when you have algea shock at night always

go to westport pools.com and see if you can find a picture of it or go to hayward filters..

All hayward stickers are replaceable at you local hayward retail store but easy way to know where backwash is usually the bottom of dial usually patent number is at bottom, Filter at 12 o'clock, waste at1 o'clock, backwash at6 o'clock, recirculate at8 o'clock rinse at10 oclock

When the pump is running is water discharging from the waste pipe outlet?
If so then the selector valve that switches the pump outlet to waste, backwash, filtering etc. is faulty.

typical is opposite of filter easiest solotion would be to try it water should come out of the waste/backwash port 1200 oclock is filter 6oclock might be backwash

No. That port is there for when you backwash or pump to waste. You normally put a hose adapter there that allows for a collapsable backwash line to be attached when ready to backwash the filter. If it is leaking water there when the valve is set to something other than waste or backwash yuou need to replace the internal gasket in the valve.

Key Cover Assy needs new spider gasket. If it is a newer model the gasket is made into the key cover and it will have to be replaced