Drager Scrubber

[Digger]

OK, so I now have a Drager scrubber which will be the replacement for the P1SS for now. Looks like it will have the duration I need for a days diving, and I can trust it.

I like the water traps and things, looks like a sesible measure, but they seem to be on the wrong side. There is a clear arrow showing gas flow, and it goes in one end and through the scrubber, then a water trap at the other? Shouldn't the water trap come first? I'm all for not getting cocktailed, but I'd rather not have the liquid in the scrubber to do it rather than the water trap catching it all.

So, if I use the scrubber backwards, am I going to die? I know the gas will travel differently, but will it be a problem?

This might be one for a Drager site somewhere, but I thought it best to start here.

Digs.

[ray]

if it is the same as the photograph of you on an earlier thread, a dyson vacumn cleaner with a computer on well who can tell what will happen,
take care down there!

[NJT]

I would suggest the trap is to trap moisture from the CO2 absorption reaction.
I did some work once on gas absorption and the amount of moisture given off is surprising

Nick

[David]

post some pics please I like this thing. I like it better as its not me diving with it.


David

[narked at 90]

hello diggs didnt take you long to start playing with it!!


the gunk should get cought in the exhal lung so that side is safe

but if you think of your possion in the water the possion of the scrubber the trap would not catch much sloshing around in the scrubber unless you roll over to the left which then would trap exsese water! but it is anouther place for moister and sorb dust to colect before it gets into to the inhale lung and then to you
i'll get them fitting machined as soon as for you!
john routley

[NotDeadYet]

Is it a Ray or a Dolphin bucket? On the Ray running it the other way round I don't think would be a good idea as you have your exhale straight into the scrubber material, any water goes right into the lime. Running it the other way means any water pools in the bottom of the bucket.

If it's a Dolphin then I don't know if it makes any difference, isn't it just a straight through axial scrubber, in one end, out the other? I've never looked that close inside one though so this might be utter pish. If you exhale into a bag then into the tub then it should trap any water or lung gravy.

[narked at 90]

hello stuart, its an old atlantis box he's go off us, digger you could turn it around but i would'nt becase after a dive or two that trap dose catch some water/coctail if you turn it that licquid will stay in to bed or condence in you inhale lung, your already stopping water getting in by useing an exhale lung rather than just one lung!
john routley

Originally Posted by NotDeadYet

Is it a Ray or a Dolphin bucket? On the Ray running it the other way round I don't think would be a good idea as you have your exhale straight into the scrubber material, any water goes right into the lime. Running it the other way means any water pools in the bottom of the bucket.

If it's a Dolphin then I don't know if it makes any difference, isn't it just a straight through axial scrubber, in one end, out the other? I've never looked that close inside one though so this might be utter pish. If you exhale into a bag then into the tub then it should trap any water or lung gravy.

[Digger]

Hmm, I'm just wondering what is more of a risk - moisture coming off the sorb and water coming in from the lung (which is still possible, but a lot less likely) or protection from the sorb getting wet which could cocktail me, but also all the CO2 problems that would come with it.

Basically, I want to know if using it backwards is going to create problems with the sorb usage and all the rest. I can't see it being a major problem, but if Drager have designed it to be used in a particular direction for a reason I'd like to know. Because their design makes sense the other way round to me. It would be almost impossible for liquid to get iunto the sorb with it the other way round, even with a single lung. You'd have a fine water trap in there, but with the 2 lungs I have planned the chances are minimal, but I'd like to minimise even that.

John, the unit when complete will be about the size of a set of twin 7s. Nice. The scrubber sits at the top nicely over the 2l tank.

By the way, I need another ally 2 to complete the design (as well as various other bits, but ho hum) anyone know a good source, or have one knocking around? I'll stick an ad in the personals anyway, but just if you're reading this and you can help, PM me.

Digs.

[narked at 90]

digger give andy a shout as i saw i little tank in his work shop

may be 1.5 or 2lt that may be do the job!
john

[Digger]

Will do buddy. If it's 1.5 it's not the end of the world, but this one has to look pretty, so people won't think I'm guaranteed to die, just that it's a possibility!

Digs.