kalk/top-off solenoid unit

Chrisrush

New member
I posted this in the DIY section but I thought I would see if someone here could figure this out as well.

So I'm getting a Aquacontroller Pro and I wanted to hook it up to my kalk reactor to be able to control the pH and water level in the sump via a float valve.

Can someone draw me up an electrical schematic to give to my friend so he can build this?

What I'm thinking is this: With the float valve on, two scenarios would be in effect, a) If the pH is below 8.3, the Aquacontroller would send a signal to a relay to open the solenoid to let water into the kalk reactor and then into the tank or b) if the pH is above 8.4, the AC would send a signal to the same relay to open the solenoid to let pure ro/di water into the tank.

Is this possible?

Also, since I'm going to be doing this, the Aquacontroller also has a conductivity probe to monitor salinity. I skim somewhat wet so on occasion I have to add salt water to make up for the water that was removed via the skimmer. Could I rig up the AC and an extra solenoid to add salt water to the tank if the salinity was dropping due to the skimmer removing the salt?

Thanks,
Chris
 

chriscolt

New member
Chris:

That is one of the things that I am going to do with my AC Pro once I get it from you - but - you cannot send the same output from the a single solenoid to two different places from a plumbing perspective - you would need 2 different solenoids one that filled the Kalk reactor and the other feeds the sump/tank directly - the electrical schematic is easy once you had the 2 solenoids on the same RO/DI output - you can use the same float switch - then you would program the AC Pro to make a decision based on 2 parameters - if float switch is activated and PH is below 8.3 then activate solenoid #1 to fill Kalk reactor which will send water to the tank until float switch opens and "B", if float switch is activated and PH is over 8.3 then activate solenoid #2 to fill tank directly from RO/DI. You would need a "T" connector on the RO/DI output and connect one end of the "T" to solenoid #1 and the other end of the "T" to solenoid #2. You would power each solenoid separately (separate transformers) and connect to each to a separate DC4 (DC8) outlet.

Chris
 

chriscolt

New member
I am currently using solenoids from Spectrapure used for a few of their automatic top off packages (they do sell the solenoid, wiring harness and transformer separately) - of course their soleniods are totally marine water / RO/DI water safe - they are plastic where ever the parts come in contact with the water - which you need for RO/DI or Marine water contact - if they were brass or copper they would leach lead (for brass) and copper (for copper) so those solenoids cannot be used with RO/DI which is very reactive since it is stripped of all impurities or salt water which is very corrosive - of course - Kalkwasser is also very caustic which will react with copper and/or brass - so in short the soleniod parts that come in contact with the water must be either plastic or stainless steel -

ChrisColt
 
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