RO/DI Issue

[Samcorp]

Hi everyone. I have noticed something weird. The DI resin cartridge has VERY little water in it. I think the RO/DI is skipping the DI stage? Theres less than 1 cm worth of water in the DI resin and none really accumulates when I make more RO/DI water.
MY TDS is about 17-19 ppm and I tested the RO water alone, which is giving me 17-19 ppm. The DI resin is only 50% full and this is a KENT MAXIMMA RO/DI. What could be the issue? Why is there almost no water going through the DI stage? I can see water flowing down from the back of the DI stage but I don't see it accumulating, I think that its going directly to the product water tube. How is this possible/how do I fix this?

 

[Samcorp]

Bump

 

[fsn77]

Do you have a valve that you can turn at the end of the tubing on your RO/DI unit to control the flow? If so, try not opening it all the way. I've found that I cannot open the valve on ours more than 1/2 way without the water level in the DI chamber starting to lower. If not, Lowe's / Home Depot sells these valves (plastic) and they aren't expensive. It could solve your problem, as it would seem that you might be having the same issue we had when I would open the valve too far.

 

[Bri Guy]

Mine has always ran with no water in it too.
Is this how it should be, or is mine wrong too?

I get 0-1 TDS, so Im not too concerned with it.

 

[jbanks]

How's the water pressure in your house? That may be the issue.

 

[corbett_n]

mine runs half full or half empty

 

[tischdog32]

Have you tried taking the canister off and making sure theres no blockage ... if theres nothing slowing the water flow, Id certainly make sure your getting enough output to run the rodi properly. but as long as you're getting a low TDS rating I wouldnt worry about it too much

 

[Samcorp]

<a href=showthread.php?s=&postid=15395930#post15395930 target=_blank>Originally posted</a> by fsn77
Do you have a valve that you can turn at the end of the tubing on your RO/DI unit to control the flow? If so, try not opening it all the way. I've found that I cannot open the valve on ours more than 1/2 way without the water level in the DI chamber starting to lower. If not, Lowe's / Home Depot sells these valves (plastic) and they aren't expensive. It could solve your problem, as it would seem that you might be having the same issue we had when I would open the valve too far.

I'm going to try this right now. The valve for the intake is plastic and I did, infact, open it all the way! I'll turn it a quarter as much and see what happens.

Regarding the pressure, I live in a house and it has more than enough (I'm pretty sure) pressure to suit this RO/DI.

 

[Buckeye Hydro]

Keep your DI cart in place. You jut have some air trapped in the housing.

It does no harm in most cases.

If you want to purge it, with the3 system running open the DI housing about a 1/4 turn (have a towel handy). You'll see the water level start to rise, and cinch the housing tight as the water level reaches to top.

Russ @
Buckeye Field Supply

 

[korth659]

great to know