No water coming thru DI unit.

sharkman121 · 08/17/2011, 08:37 AM

My RODI unit is about 3 months old, only used it a few times however im not getting water coming thru the DI part anymore.

Does this mean its time to change the filter already?

Im pretty sure the line is not clogged, and theres a decent water pressure coming from the pipe even though i dont have a tester to test the pressure or a booster.

thegrun · 08/17/2011, 09:00 AM

Have you kept the filter full of water or did you let it dry out?

sharkman121 · 08/17/2011, 09:57 AM

i believe i let it dry out since it was about almost a month since i last used it.

sharkman121 · 08/18/2011, 07:33 AM

anyone?

fshaqrmman · 08/18/2011, 08:08 AM

Sounds like the membrane may have dried out...not letting the water to pass through.

pgammon · 08/18/2011, 08:36 AM

Unhook the lines to each stage one at a time and see where the flow stops.

sharkman121 · 08/18/2011, 09:52 AM

I see where the flow stops, right when it goes into the DI membrane it doesnt come out.

Guess i didnt know the membrane wasnt supposed to dry out and to keep it wet.

VegasUSP · 08/18/2011, 10:50 AM

I'm having the same problem right now, guess I'll have to disconnect my DI unit to see if the water is flowing thru my RO unit.

Sport507 · 08/18/2011, 10:54 AM

Quote:

Originally Posted by sharkman121

I see where the flow stops, right when it goes into the DI membrane it doesnt come out.

Guess i didnt know the membrane wasnt supposed to dry out and to keep it wet.

Are you confusing the RO membrane with the DI resin canister? The DI resin canister should unscrew and inside should be a cylinder with the resin beads in it. Which can be replaced.

x947 · 08/18/2011, 02:09 PM

I bet you need a booster pump . . . my pressure seemed okay too when I tested it (+40) but I got much better performance after adding a booster. Get ready to spend another $130.00 !

sharkman121 · 08/18/2011, 02:50 PM

Quote:

Originally Posted by Sport507

Are you confusing the RO membrane with the DI resin canister? The DI resin canister should unscrew and inside should be a cylinder with the resin beads in it. Which can be replaced.

yes i think i was... the water actually flows through the 3 RO canisters and i get RO water, but once it enters the DI chamber it doesnt come out.

Guessing i jus need to change the DI resin or get a booster pump.

Sport507 · 08/18/2011, 03:40 PM

Quote:

Originally Posted by sharkman121

yes i think i was... the water actually flows through the 3 RO canisters and i get RO water, but once it enters the DI chamber it doesnt come out.

Guessing i jus need to change the DI resin or get a booster pump.

Before you put $140+ into a booster pump take out the resin cylinder put it back together and see if water comes out of the DI unit.

snorvich · 08/18/2011, 05:12 PM

Is your sediment filter clogged?

Sport507 · 08/18/2011, 08:24 PM

Please post a pictue if possible of the unit that will help us help you. Unless you are on well water you shouldn't have issue with the other filters being only 3 months old, but a picture would help.

orion251 · 08/19/2011, 12:34 AM

Quote:

Originally Posted by sharkman121

yes i think i was... the water actually flows through the 3 RO canisters and i get RO water, but once it enters the DI chamber it doesnt come out.

Guessing i jus need to change the DI resin or get a booster pump.

Are you sure? If you have a 5 stage then you have 3 canisters (usually clear) that hold sediment and carbon filters. The RO "canister", actually a membrane, is usually mounted horizontally above the other 3 filters and is in a white housing. From the RO membrane it goes to the DI cartridge and then you get the pure water from it.

A pic of your setup would really help!

jeff@zina.com · 08/19/2011, 06:55 AM

Quote:

Originally Posted by sharkman121

I see where the flow stops, right when it goes into the DI membrane it doesnt come out.

DI isn't a membrane, that's the RO membrane.

Jeff

sharkman121 · 08/19/2011, 08:08 AM

Hmm, sorry i guess i got a bit mixed up with the membranes. All good learning info nonetheless though.

Ill post pics soon as i get home from work. Thanks.

Sport507 · 08/19/2011, 06:36 PM

Looking forward to the pictures.

Flippers4pups · 08/19/2011, 06:41 PM

Sounds like the RO membrane is/was dry. Once wet, should stay wet until it's time to change out. food for thought.

08/17/2011, 08:37 AM	#1
sharkman121 Registered Member Join Date: Aug 2010 Location: Trinidad & Tobago Posts: 208	No water coming thru DI unit. My RODI unit is about 3 months old, only used it a few times however im not getting water coming thru the DI part anymore. Does this mean its time to change the filter already? Im pretty sure the line is not clogged, and theres a decent water pressure coming from the pipe even though i dont have a tester to test the pressure or a booster. __________________ 130g in-wall 150lbs Live rock Niger Trigger, yellow tang, 3 chromis, tomato clown, blue damsel, foxface rabbitfish. 1/4 hp Pacific Coast Chiller.

08/17/2011, 09:57 AM	#3
sharkman121 Registered Member Join Date: Aug 2010 Location: Trinidad & Tobago Posts: 208	i believe i let it dry out since it was about almost a month since i last used it. __________________ 130g in-wall 150lbs Live rock Niger Trigger, yellow tang, 3 chromis, tomato clown, blue damsel, foxface rabbitfish. 1/4 hp Pacific Coast Chiller.

08/18/2011, 07:33 AM	#4
sharkman121 Registered Member Join Date: Aug 2010 Location: Trinidad & Tobago Posts: 208	anyone? __________________ 130g in-wall 150lbs Live rock Niger Trigger, yellow tang, 3 chromis, tomato clown, blue damsel, foxface rabbitfish. 1/4 hp Pacific Coast Chiller.

08/18/2011, 08:08 AM	#5
fshaqrmman Registered Member Join Date: Aug 2001 Location: Mount Pleasant, SC Posts: 133	Sounds like the membrane may have dried out...not letting the water to pass through. __________________ 90 Gallon Reef-Ready AGA, 20L Sump, (2) 250W Aqua Medic hqi pendants, Aqua Euro Chiller, (2) Vortech mp10w es, JBJ ATO

08/18/2011, 09:52 AM	#7
sharkman121 Registered Member Join Date: Aug 2010 Location: Trinidad & Tobago Posts: 208	I see where the flow stops, right when it goes into the DI membrane it doesnt come out. Guess i didnt know the membrane wasnt supposed to dry out and to keep it wet. __________________ 130g in-wall 150lbs Live rock Niger Trigger, yellow tang, 3 chromis, tomato clown, blue damsel, foxface rabbitfish. 1/4 hp Pacific Coast Chiller.

08/17/2011, 09:00 AM	#2
thegrun Registered Member Join Date: Dec 2008 Location: Garden Grove, Ca Posts: 17,023	Have you kept the filter full of water or did you let it dry out?

08/18/2011, 08:36 AM	#6
pgammon Registered Member Join Date: Jan 2001 Location: Eastover, SC Posts: 282	Unhook the lines to each stage one at a time and see where the flow stops.

08/18/2011, 10:50 AM	#8
VegasUSP Registered Member Join Date: Mar 2011 Posts: 119	I'm having the same problem right now, guess I'll have to disconnect my DI unit to see if the water is flowing thru my RO unit.

08/18/2011, 02:09 PM	#10
x947 Registered Member Join Date: May 2008 Location: florida Posts: 166	I bet you need a booster pump . . . my pressure seemed okay too when I tested it (+40) but I got much better performance after adding a booster. Get ready to spend another $130.00 !

08/18/2011, 05:12 PM	#13
snorvich Team RC member Join Date: Aug 2005 Location: Outlander Posts: 40,953 Blog Entries: 46	Is your sediment filter clogged? __________________ Warmest regards, ~Steve~

08/18/2011, 08:24 PM	#14
Sport507 ~Just a Farm Boy~ Join Date: Dec 2010 Location: Central Indiana Posts: 1,651	Please post a pictue if possible of the unit that will help us help you. Unless you are on well water you shouldn't have issue with the other filters being only 3 months old, but a picture would help. __________________ Sport If you do not test for it, DON'T dose it. Indiana INDMAS Member

08/19/2011, 08:08 AM	#17
sharkman121 Registered Member Join Date: Aug 2010 Location: Trinidad & Tobago Posts: 208	Hmm, sorry i guess i got a bit mixed up with the membranes. All good learning info nonetheless though. Ill post pics soon as i get home from work. Thanks. __________________ 130g in-wall 150lbs Live rock Niger Trigger, yellow tang, 3 chromis, tomato clown, blue damsel, foxface rabbitfish. 1/4 hp Pacific Coast Chiller.

08/19/2011, 06:36 PM	#18
Sport507 ~Just a Farm Boy~ Join Date: Dec 2010 Location: Central Indiana Posts: 1,651	Looking forward to the pictures. __________________ Sport If you do not test for it, DON'T dose it. Indiana INDMAS Member

08/19/2011, 06:41 PM	#19
Flippers4pups Home made abyss Join Date: Aug 2010 Location: Lake Saint Louis, MO Posts: 2,047	Sounds like the RO membrane is/was dry. Once wet, should stay wet until it's time to change out. food for thought. __________________ Don Reefing since 1993 Current Tank info: 125 gallon DT , 125 gallon basement sump. Rw 15 & Rw 8. Panworld 150ps return. Reef Octopus 150 skimmer, 3 165w mars aqua led.

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