Looking for replacement suggestions - broken Pentair SuperFlo SF-N1-1A

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Installation complete!

Put the new siemens 2 pole 20A GFCI breaker in.

Moved the pump power wires to a direct connection on that new breaker (the old single speed pump was receiving power from the easy touch filter pump power relay).

Actually kept the old 15A 240 breaker in the box, it’s still powering filter pump relay, which has the power for the iChlor 30 and the heater.

i2 came with the rs-485 cable, it’s working and the i2 is connected to the easy touch.

Now I just have to decide how long to run it. If I do 1500rpm the iChlor flow is strong enough to activate the cell. It seems like the power consumption is much better on a lower rpm setting, this is what mine looks like:

1250rpm: 96 watts
1500rpm: 165 watts
1730rpm: 260 watts
2050rpm: 438 watts
2350rpm: 663 watts
2550rpm: 850 watts
2850rpm: 1178 watts
3110rpm: 1530 watts
3450rpm: 2074 watts

Unfortunately I don’t have a meter to measure the gpm but I’m thinking to leave it at 1500, just high enough to keep that SWG active.
 
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o_O said:
If I do 1500rpm the iChlor flow is strong enough to activate the cell.
Click to expand...
As long as it is enough to activate the cell, then that is fine.
o_O said:
1250rpm: 96 watts
1500rpm: 165 watts
1730rpm: 260 watts
2050rpm: 438 watts
2350rpm: 663 watts
2550rpm: 850 watts
2850rpm: 1178 watts
3110rpm: 1530 watts
3450rpm: 2074 watts
Click to expand...
What is the filter pressure at each speed?

Check to see if your utility gives a rebate for a new variable speed pump.

There might be tax rebates as well for new high efficiency pumps.



1673643009819.png

 
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It’s super quiet, problem with 1500rpm is that the skimmer suction doesn’t break the surface of the water so stuff is pulled into the area but not into the basket. Is there something I could do to create the Bernoulli effect in there?

At 1500 rpm filter psi is 5.5
At 1730 rpm filter psi is 7
At 2050 rpm filter psi is 8.5
At 2350 rpm filter psi is 10.5
At 2550 rpm filter psi is 12
At 2850 rpm filter psi is 14
At 3110 rpm filter psi is 16.5
At 3450 rpm (max) filter psi is 19.
 
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Pool had been off for a few days so there was a slight film on the surface of the water.

Unfortunately with rebates I’m so cal edison and there doesn’t look to be anything available for me.
 
o_O said:
It’s super quiet, problem with 1500rpm is that the skimmer suction doesn’t break the surface of the water so stuff is pulled into the area but not into the basket. Is there something I could do to create the Bernoulli effect in there?
Click to expand...
Where is the water in the skimmer window? Make sure it is right about 50%. My guess is that your water level is higher than 50%. 1500 should work just fine for skimming, if your water level is sufficient.
 
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o_O said:
It’s super quiet, problem with 1500rpm is that the skimmer suction doesn’t break the surface of the water so stuff is pulled into the area but not into the basket. Is there something I could do to create the Bernoulli effect in there?

At 1500 rpm filter psi is 5.5
At 1730 rpm filter psi is 7
At 2050 rpm filter psi is 8.5
At 2350 rpm filter psi is 10.5
At 2550 rpm filter psi is 12
At 2850 rpm filter psi is 14
At 3110 rpm filter psi is 16.5
At 3450 rpm (max) filter psi is 19.
Click to expand...
Based on these numbers, I would estimate the system curve at about the red lines.

So, that estimates the flow at between 31 and 40 gpm at 1,500 RPM, which should be plenty for a single skimmer.

Most skimmer weirs work well down to about 15 gpm, so maybe something is off with your weir?

Do you have 1 or 2 skimmers?

Is the main drain open?

If yes, try closing it to about only 10% open/90% closed.



1673649601477.png
 
PoolStored said:
Where is the water in the skimmer window? Make sure it is right about 50%. My guess is that your water level is higher than 50%. 1500 should work just fine for skimming, if your water level is sufficient.
Click to expand...
Water level is actually too low right now, barely above the window lip:
 

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JamesW said:
Based on these numbers, I would estimate the system curve at about the red lines.

So, that estimates the flow at between 31 and 40 gpm at 1,500 RPM, which should be plenty for a single skimmer.

Most skimmer weirs work well down to about 15 gpm, so maybe something is off with your weir?

Do you have 1 or 2 skimmers?

Is the main drain open?

If yes, try closing it to about only 10% open/90% closed.



View attachment 468956
Click to expand...
Thanks for that!

We only have one skimmer, with a valve that sucks from either the side of the pool (vacuum port which is closed) or the skimmer. There’s no control to suck from the bottom of the pool manually (but there is a float valve under the skim basket that would pull water from the drain if the skimmer water level was too low)
 

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o_O said:
but there is a float valve under the skim basket that would pull water from the drain if the skimmer water level was too low)
Click to expand...
You might be getting too much flow through the bottom drain.

Maybe put a reducer in the hole for the main drain to reduce the flow and improve the skimmer flow.

If the flow estimate is accurate, then the weir should be working correctly.

Bring the water level up some to see if that helps.
 
3 issues.
1) The door is rubbing on the left side as indicated by the rub marks.
This can cause the weir to malfunction.

2) The water level is too low.

3) The door is not buoyant enough and it is sinking too low.

Sometimes the foam in the weir gets waterlogged and the weir or foam needs to be replaced.

Can you show the other side of the door?

1673651446105.png
 
This is what the skimmer looks like:

Left pipe is for the pool drain, right pipe is the suction line.

My understanding is when float valve is closed the water will be sucked solely from the pool drain, otherwise it pulls from the skimmer (and possibly the main drain as well). Is that correct?

I have a flap on the skimmer float valve that I can close - but I think if I do that then it’s just going to suck from the pool drain alone right?
 

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o_O said:
I think if I do that then it’s just going to suck from the pool drain alone right?
Click to expand...
Right.
o_O said:
My understanding is when float valve is closed the water will be sucked solely from the pool drain, otherwise it pulls from the skimmer (and possibly the main drain as well). Is that correct?
Click to expand...
Correct.

You will get flow from the main drain and the skimmer.

You can screw in a threaded reducer to reduce the flow through the main drain.

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