How to change the salt system pump relay - Aqualink

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kja3947

Member
Aug 8, 2022
7
New Orleans, LA
I recently purchased and installed a Pentair Superflo VS pump. The Superflo pump does not talk to my Jandy Aqualink, so I had to use relays to control it, which I have done. I now can control multiple speeds via my Aqualink, no problem...except for the salt system. The salt system seems to be hard-wired to the "Pool Pump" relay, which I have configured for high speed. I have configured Aux4 for low speed and set up appropriate schedules to clean the pool. The problem I have is that the salt system is only on for the few hours per day that I am using high-speed, it is not on when using low speed. I would prefer for the salt system to be enabled for the low-speed pump, where it would run 10 hours per day. I would reverse the settings and make the "Pool Pump" be the low-speed, but the problem there is that also powers my hot-tub/heater. The low-speed would probably burn-up the heater as not enough flow to carry the heat, therefore "Pool Pump" must be the high speed option.

So...does anyone know how to change which relay the salt system is set to?

PS moving the power connectors for the salt system does not help, it powers but does not turn on.
 
Welcome to TFP.

What model salt system do you have? Jandy Aquapure?
 
Post pics showing the inside high voltage wiring and relays of your Aqualink.

Do you have an unused Aux relay?
 
Install the two-speed relay and power the SWG from the load side of the Filter relay (red dots).

Set the pump type as two-speed so that it recognizes low speed as the pump is on.

This way, the SWG will work on high and low speed.

Note: Make 100% sure you know exactly what you're doing before wiring anything.

1660575954153.png
 
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So it appears that when in two-speed pump mode, Aux1 (pump) is engaged for high speed and low speed, and Aux2 is engaged for the low-speed. While I can't use the wiring diagram provided because its variable speed, not two speed, I believe I can make this work for me.

Thanks.
 
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Ok, I have been able to use this information to make something work, and I plan to put together the specifics for the benefit of the group, but I have one question remaining. In my current configuration I have the salt system powered continuously, whether the pump is running or not. The flow detection as well as the controller don't enable it unless the pump is on, so I think its fine, but would welcome any comments on that issue.
 

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If you wanted to shut off power to the SWG when the pump is off, you can install an extra relay and just power it from the same coil power as the filter pump relay.

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1660760616720.png
 
Yep, that is the option if its a problem. Just not sure it is a problem. As stated earlier, plenty of safeties from running the SWG with no flow, but are there any issues powering that giant 4" coil 24/7/365? Although with low-flow its going to be powered 14/7/365 anyways...
 
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