I have an ATO reservoir that has a mechanical float valve, that is fed directly from my RO/DI (with plenty of water pressure).
The reservoir also as an OS-1M at the bottom, as a low level sensor. I used this sensor to send me an alarm when the water is low. Then I would manually open up a ballhead that would allow water to fill the ATO reservoir. At some point it will shutoff from the mech float valve, and I'll eventually go and manually close the ball valve again just in case.
Now, I just purchased a Solenoid, another FMM (w/ power supply), to do the above for me. Note: I have an extra OS-1 that I could use as a high level sensor just below the mechanical float valve, but it's not working and I'm trying to get a replacement from Neptune at the moment, but at some point I'll integrate that in as well.
I was wondering how to program my Solenoid to open for about 15 minutes after the low water sensor is "OPEN"
Here's what I'm thinking: When the low level sensor (let's call it ATO_LO) is OPEN, I'll open the solenoid by turning it ON for 15 minutes. That'll allow the reservoir to be filled and the mechanical float valve will catch it when it's full (my RO/DI has an ASOV). I'll defer 10 seconds before turning on just as a buffer (my ATK task was setup this way too). And I won't refill more than once in an hour (I probably only need it to fill once every 4 days actually, but 1 hour is good just to make sure things aren't leaking/flooding for some reason).
Code for the solenoid:
Code:Fallback OFF Set OFF If ATO_LO OPEN Then ON Defer 000:10 Then ON Defer 0015:00 Then OFF Min Time 060:00 Then OFF
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