Salt level 3600 last week and 4000 today! Causes?

I understand replacing the red valve with three way. I got confused because I thought pump was pumping water to filter but its flowing from filter to pump? right? and therefore .......I'm still confused (publically confused)
Crud. I fouled up only seeing the one pic. Forget the drain area altogether after the filter. Put a 3 way at the X, which would then give you the drain/vac to waste feature

Screenshot_20240315_174345_Chrome.jpg
 
good quality reinforced 2 inch discharge hose is 3 inches in diameter flat and will fit a 1.5 inch pvc pipe perfectly.

Nominal OD of 1.5 inch pvc is 1 and 7/8 inch.

At any rate your hose looks larger than it should.
The O.D seems to be about 2.109 inches.

If the wall thickness is 1/16”, then the I.D is about 1.984”.

So, the 2” rating is approximately correct.

The O.D of 1.5" PVC pipe is 1.900", so that leaves about 0.10" extra.

It should be close but a little bit loose.

Double clamp and it should be fine.

Maybe wrap some electrical or duct tape around the pipe to make it slightly bigger.
 
Crud. I fouled up only seeing the one pic. Forget the drain area altogether after the filter. Put a 3 way at the X, which would then give you the drain/vac to waste feature

View attachment 558522
Can you explain how the water flows with the filter removed from equation?
 

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@william13
To confirm what @JamesW & @Newdude have stated

The drain line on the exit of the filter is not ideal as it requires flow to go through the filter unnecessarily If you were trying to drain to get rid of dead algae then it would be captured by the filter and the purpose would be to drain it before it gets to the filter - this is just one example why you want the drain line before the filter

James pointed out an error that the flow switch for the SWCG is installed before filter and it should be after the filter. This will ensure you have the flow switch sensing the downstream flow to the pool

So cut out the flow switch and install a 3-way valve in its place. This will allow to either flow to the filter or flow direct to the drain line.

Cut out the Tee where the current drain line is located and install the flow switch.

You may need some couplings for the pipe to make all the connections.
 
Put the three-way between the pump and filter (Red Dots)

The SWG flow switch looks like it is in the wrong place (Red Arrow).

The flow switch should be after the filter and near the cell.

View attachment 558530
Ok and wow thank you!!!! I will place the 3 way where stated (valve recommendations would be highly appreciated). Are you suggesting between your red dots or anywhere between pump and filter. Thanks for point out flow switch. I guess I have to replace the pipe also. There is not covering up holes I guess.
 
Maybe the old hose is 2" hose or maybe the pipe is 1-1/4" pipe?
Hard to tell if the pipe coming out of the filter is 1-1/2 inch but to the eye appears to be. The red handled ball valve is bushed down into the T that supplies it. It very well could be 1-1/4 in bushed down from 1-1/2 or 1-1/2 bushed down from 2.
 
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Thanks for point out flow switch. I guess I have to replace the pipe also. There is not covering up holes I guess.
Actually no you don’t need to replace the T the flow switch is currently mounted in. You should be able to plug it simply with a standard pvc plug. Use Teflon tape on the threads. Just be gently with extraction and installation as the T could be brittle from exposure.
 

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