"Guest",

Here I thought that my 72X30 tanks were huge...but 36...WOW! How many stations are you supplying?

I have never heard of anyone running 3 carbon tanks, are you sure one of them isn't lignite or something? AAMI and the IG only talk about having 2 tanks in series or, 2 banks of 2 in paralell.

If the first 2 tanks meet the 10 minute EBCT requirement you could maybe call #3 "Insurance"?

Chuck

I am 100% positive they are all carbon, exchanged every three months. This is what the powers to be had before my arrival and what they continue to feel comfortable with.

I think I have two 72"X30" tanks too. But my water company only fill up 4 cuft of carbon for each tank. My RO machine porduct flow is 7gpm, concentrate flow is 8gpm, and recirculating flow is 7gpm, 1" raw water input pipe and 1" product pipe. What's my EMBT?

I didn't actually check the exact amount of water goes into the drain. But by looking at the pipe setting, it really sending 8gpm rejecting water to the drain.

It is EBCT, my error!

My water company is the company has two persons sitting in AAMI committe.

Tommy,

Providing the flow rates and amount of carbon you state are correct, you're only getting a little under 4 minutes EBCT total for the 2 tanks. You need a little more than 10 cf in each tank to meet the EBCT requirement.

If they are truely only putting 4 cf in each tank something is terribly wrong. Has the RO been replaced or expanded since the tanks were installed? This was an issue in I believe it was PA where a water system was enlarged but the carbon tanks were left the same. If I remember correctly some patients died because of this.

Chuck

The tanks are huge likes Chuck said, but they only put 4 cuft of carbon, so the tank is only half full. The reason they said was the carbon can turn over and over during backwashing, and it should not be pack full.

All the units that I saw in my area was the same size of carbon tanks with rouhly the same size of treatment station capacity. Of couse, I didn't know the actual carbon capacity in their tanks. They are not my units, I just visiting.

quote:

You need a little more than 10 cf in each tank to meet the EBCT requirement.

I thought it was 5 EBCT per tank and a total of at least 10 for combined both tanks.

OOPS! Sorry Chuck, I misread that.

Can I get a copy to. naguilar@kumc.edu Thanks

me2,

Click on the "Labels" link in my post on the first page of this thread.

Chuck

Having entered my dotage I can be excused for only getting back to this now. Chuck W. (aka WWI)was kind enough to send us samples of his component labels. I have a comment or two: at the risk of stating the obvious, each individual needs to edit these labels so they are specific to his/her facility. I did not think you were allowed to by-pass any carbon tank at any time. If we were to do this here in So. Cal. and it was discovered by a surveyor, they would have our gonads in a vise. Anyone else have this experience or threatened experience. Chuck, do the new C of Cs allow for this? It has been alleged that you are sitting by your computer with all the references and manuals all dog eared, highlighted and tabbed.

Mark,

Forgive me but I have been looking at html code all morning so I'm cross-eyed and don't feel like trying to find it. I don't recall anything about not being able to bypass the first tank but I do distincly remember it being stated that the second tank should not be able to be bypassed.

Whether right or wrong, we purchased an entire 510K system a few months ago and the first tank came with a bypass but not the second. The system came with a nice laminated schematic and stated that the system must be installed in the configuration shown or it would void the 510K.

Chuck

We use a Brother P-touch labeller to do all our labelling. The labels come in various sizes from 9/64" - 1" and different colours. We have used them to number machines, water systems, storage/parts bins, label replaced parts. You can also do arrows and other symbols. They work great and even with multiple wipe downs three times a day on our dialysis machine we have had no problems. We use the PT-2700. The tapes are fairly expensive but you have custom labels available anytime.
Hope this helps.

http://www.brother-usa.com/Ptouch/Ptouch_Desktop/

"Upon further review . . ." Chuck is correct that the labels he sent out indicate that Carbon Tank #2 cannot be by-passed, my mistake. Why would you by-pass Carbon Tank #1 in the event of break through?

Mark,

My thinking is if there is a problem such as a leak or something.

Chuck