Didn't get an owners manual and wondering how to use the backwash to waste setting?
When the filter get clogged the pressure in the filter increases and there is less water flow returning to the pool.
If your filter is a sand filter, when you turn the valve to backwash and turn on the pump it reverses the water flow in the sand filter to flush the dirt out of the filter to waste. Look at the window openning in the waste pipe and keep the backwashing goinging until you see clear water.
Then turn off the pump and move the control valve to Rinse, turn on the pump for a few minutes, this returns the water flow back to normal but the water goes to waste to make sure the sand filter is clean.
Turn off the pump and move the control valve to filter and turn on the pump. This mode is the normal operating mode and the pressure gauge in the sand filter will show a drop in pressure.
Some pressure gauge shows a red section to indicate when backwashing should be carried out.
SOURCE: multi-valves on hayward sand filter mixed up
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
SOURCE: Was wondering how to change
If you know how to place the valve into the backwash and filter positions you need to use these. The others are important at times but they are not as important. In fact another type of backwash valve has only two positions. This valve is one of the most popular valves for this function so it must not be too bad. I hope this helps.
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I believe there was a misunderstanding to my question. I would like to know what the
"Backwash to Waste" setting is for on the sand filter. Is the so be used when vacuuming the pool?
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