Remote DOS ATO Reservoir Fill

[Whip]

I have a DOS that refills my ATO Reservoir called DOS-RODI. It adds 2 gallons of RODI water to my ATO Reservoir from 4AM-6AM. I have a high level sensor in my ATO Reservoir called RODIHI.

When RODIHI is closed, I want my DOS-RODI to shut off (so I don’t flood my den). I watch it close, but have had a couple close calls when my evaporation rate has changed. I am sure an overflow condition is inevitable. For peace of mind, do I use this code?

If RODIHI CLOSED Then OFF

Will that work? Does everything else work the same? Do I need anything before or after that?

 

[SuncrestReef]

Yes, that code is correct. If your DOS is using the graphical scheduler, then add your code to the Advanced tab by clicking the gear at the top above the graphical schedule:

 

[Whip]

Yes, that code is correct. If your DOS is using the graphical scheduler, then add your code to the Advanced tab by clicking the gear at the top above the graphical schedule:

THANK YOU!!!

Don’t want to go down a rabbit hole, but one more question that is related (kind of)... I know that the DOS uses volume over time, but can it just be used as a pump (standard on/off style)? I think they disallowed this so as to not have people burn up the pump. Anyway, if I could do that... I could add another level sensor (RODILO) and if it is closed, then DOS-RODI would pump water until RODIHI closes. Then it would then shutoff.

PS - The reason I am using a DOS and not a pump is because the head and losses in the run disallow a standard Neptune ATO pump; my RODI vessel is 70+ feet from my ATO Reservoir.

 

[SuncrestReef]

THANK YOU!!!

Don’t want to go down a rabbit hole, but one more question that is related (kind of)... I know that the DOS uses volume over time, but can it just be used as a pump (standard on/off style)? I think they disallowed this so as to not have people burn up the pump. Anyway, if I could do that... I could add another level sensor (RODILO) and if it is closed, then DOS-RODI would pump water until RODIHI closes. Then it would then shutoff.

PS - The reason I am using a DOS and not a pump is because the head and losses in the run disallow a standard Neptune ATO pump; my RODI vessel is 70+ feet from my ATO Reservoir.

You can set it to ON or OFF, but the drawback to that approach is that the DOS will only run at 25 mL/min (it has 6 speeds: 7, 12, 25, 60, 125, 250 mL/min), so pumping 2 gallons would take nearly the whole day. A better approach is to create a DOS profile where you can specify the speed, volume, and number of doses, then program it to activate that profile when the water is low:

If RODILO OPEN Then AddWater
If RODIHI CLOSED Then OFF

DOS profiles can be confusing, so be sure to read the DOS manual for more details: https://www.neptunesystems.com/downloads/docs/DOS_manual.pdf

 

[Whip]

You can set it to ON or OFF, but the drawback to that approach is that the DOS will only run at 25 mL/min (it has 6 speeds: 7, 12, 25, 60, 125, 250 mL/min), so pumping 2 gallons would take nearly the whole day. A better approach is to create a DOS profile where you can specify the speed, volume, and number of doses, then program it to activate that profile when the water is low:

If RODILO OPEN Then AddWater
If RODIHI CLOSED Then OFF

DOS profiles can be confusing, so be sure to read the DOS manual for more details: https://www.neptunesystems.com/downloads/docs/DOS_manual.pdf

Ok, “That Apex Guy”... you officially just went over my head.

Give me a couple years and I’ll be ready to start to scratch the surface on my Apex. Until then, I’ll stick with the first scenario you helped me out on.