ato with a timer?

[Remmers]

On My system I'm adding around 2-3 gallons a day of ro water.

My question is, Would it work to run a pipe or hose from my 55 gallon ro drum to my sump, and have a small pump hooked to a timer, and have it set to go off everyday for a certain amount of time(to be figured out amount of time the pump would need to pump the amount needed?

Im thinking if I have it set to fill up at the same time everyday it will make things "balanced".

Thanks

 

[AZRippster]

You would need a 2 sensor based solutions. For example, 2 Liquid Level Controllers from Spectra Pure. One would be placed in your sump that would detect when your water level was low, turn on a top-off pump, and then turn it off when the sump level had corrected. At the same time, another sensor needs to be in your RO/DI holding tank that senses when it's low, allows the RO/DI system to flow, and then turn off when full.

Or

Just use a single LLC to allow an RO/DI system to flow or turn off when the sump needs topping off.

 

[fishgate]

Dude. $67 for a JBJ ATO (plus any pump). Buy one.

 

[sleepydoc]

Dude. $67 for a JBJ ATO (plus any pump). Buy one.

+1

Are you talking about using a pump to refill your ATO container, or to do the topping off itself? Either way, doing it as you describe is a bad idea unless you have some sort of float switch or other means to provide feedback.

Evaporation is reasonably consistent, but does vary from day to day depending on ambient temperature, humidity and airflow patterns. Likewise, most pump flows are not consistent enough that you can depend on a simple timer to measure volumes. Combine these two variables and you have a recipe for a flood.

It's generally not recommended to directly connect your DI source to your tank without an intermediate reservoir (ATO tank.) The potential for a flood or catastrophic drop in salinity outweigh the minimal convenience it may give you.

 

[AZRippster]

If you do consider a direct RO/DI to sump solution, use a system that relies not only on the primary sensor that detects low water level and allows the system to flow, but also a backup float that will prevent the system from a continual run situation.

For example:

http://spectrapure.com/Single-Tank-Liquid-Level-Controller-115VAC

The switch is activated by the pressure drop in the sensor tube. The solenoid then opens allowing the flow, which is directed through the float. The float also provides a secondary safety so that if the system does not shut off, it pinches the water off once the float limit is reached.

 

[rwb500]

The float also provides a secondary safety so that if the system does not shut off, it pinches the water off once the float limit is reached.

just an extra note - to properly employ this method of backup you need to install the valve thingy that shuts off the water feed line if there is back pressure on the outlet line. not sure what its called but its a common thing.

 

[AZRippster]

It is an Auto Shutoff Valve that is normally employed on the RO unit when a holding tank is employed. I have one on mine even though I don't use a holding tank (kitchen unit does) to ensure the system shuts off.

http://www.ebay.com/itm/4-Way-Rever...650?pt=LH_DefaultDomain_0&hash=item3cce07d18a

You can't see it in this shot, but it's up where the RO membrane cartridge is.

 

[Remmers]

Dude. $67 for a JBJ ATO (plus any pump). Buy one.

I could but to pull water from a 55 barrel that 10 feet away, what kind of pump would work with a ato to pump water that far and still be able to stop. I tried it before and it didn't work.

 

[Remmers]

It is an Auto Shutoff Valve that is normally employed on the RO unit when a holding tank is employed. I have one on mine even though I don't use a holding tank (kitchen unit does) to ensure the system shuts off.

http://www.ebay.com/itm/4-Way-Rever...650?pt=LH_DefaultDomain_0&hash=item3cce07d18a

You can't see it in this shot, but it's up where the RO membrane cartridge is.

Would this work for preventing the storage tank from overflowing"shut off the flow if the ro/did"

I'm trying to figure out how to hook up something to the barrel that holds the water to shut of the ro/did when its full.

 

[Pife]

I could but to pull water from a 55 barrel that 10 feet away, what kind of pump would work with a ato to pump water that far and still be able to stop. I tried it before and it didn't work.

You would want to push the water and a Maxijet could work.

 

[zachts]

If you do consider a direct RO/DI to sump solution, use a system that relies not only on the primary sensor that detects low water level and allows the system to flow, but also a backup float that will prevent the system from a continual run situation.

For example:

http://spectrapure.com/Single-Tank-Liquid-Level-Controller-115VAC

The switch is activated by the pressure drop in the sensor tube. The solenoid then opens allowing the flow, which is directed through the float. The float also provides a secondary safety so that if the system does not shut off, it pinches the water off once the float limit is reached.

This works great, been using it for many years, down side is you will run thru DI resin much faster but it is darn convenient not needing an ATO reservoir.

 

[zachts]

I could but to pull water from a 55 barrel that 10 feet away, what kind of pump would work with a ato to pump water that far and still be able to stop. I tried it before and it didn't work.

A small mag drive like model 3 or 5 would suffice or any similarly rated pump of 300 to 500 gph and a decent amount of head pressure if the 10' is vertical, if the run is mostly horizontal a maxi jet would be enough.

or

Just about any peristaltic pump, preferably something a little bit more durable than the cheap ones used for dosing, but those work also in most cases, Ebay has a plethora available. these cost more but are fantastic if the run is long and there are walls and such in the way, you can easily use 1/4" RO line.

 

[zachts]

Would this work for preventing the storage tank from overflowing"shut off the flow if the ro/did"

I'm trying to figure out how to hook up something to the barrel that holds the water to shut of the ro/did when its full.

Most just rely on a mechanical float valve for the storage tank but if you want it more fool proof Spectra pure has a reservoir filling controller kits also or one can be DIY'd for around $20 dollars that will let the ATO tank run low before kicking in the RO to refill, then shuts off when full, still want to uses a mechanical float for safety and having an overflow drain line is a good idea if possible.

http://spectrapure.com/DOSING-TOP-O...enoid-Valve-Controller-Assy-w-1-4in-Sol-Valve