[PSUBS-MAILIST] scrubber performance

[James Frankland]

perhaps the rebreather is more sealed?  Or maybe the scrubber only works
when air is being forced through it.  actually, thats not true because i
spilt a load on the garage floor and the next day, the dregs that i hadnt
rescued had turned purple.
Oh well, its easy enough to pour it back into the tub.  (especially as ive
got a proper funnel now.....the reason for the spillage :)  )




On 31 January 2014 15:41, hank pronk <hanker_20032000 at yahoo.ca> wrote:

>  James,
> When I read the manual for my inspiration rebreather scrubber, it says to
> not remove the absorbent.  I have no idea why, maybe because they do not
> use colour indicating.  I just bag the whole scrubber.  I like your way
> better though, it seems more bullet proof.
> Hank
>
>
>  On Friday, January 31, 2014 8:35:43 AM, James Frankland <
> jamesf at guernseysubmarine.com> wrote:
>  yes, i pour it out of the scrubber back into the container it comes in.
>
> On 31 January 2014 15:33, hank pronk <hanker_20032000 at yahoo.ca> wrote:
>
>   James,
> Do you remove the absorbent after each use, then put it back in the
> scrubber?
> Hank
>
>
>  On Friday, January 31, 2014 8:27:54 AM, James Frankland <
> jamesf at guernseysubmarine.com> wrote:
>   yes, it comes in 5L sealed plastic cans, like oil does.  I just pour it
> back in and screw the lid on.  Im waiting to see how long 5l lasts.  I make
> a note each time I use it of how long its been on for.  So far i've done
> about 5 hours and there is no change in colour or performance.
> James
>
> On 31 January 2014 15:23, hank pronk <hanker_20032000 at yahoo.ca> wrote:
>
>   James,
> Do you seal your scrubber some way when your not using it.
> Hank
>
>
>  On Friday, January 31, 2014 7:39:48 AM, James Frankland <
> jamesf at guernseysubmarine.com> wrote:
>   hi Hank,
> Thats good news on the shelf life of the absorbent.  Ive got 6 5L
> canisters and was worried they were going to go bad.  Looks like they will
> be ok for a while yet!
> regards
> James
>
> On 31 January 2014 13:33, hank pronk <hanker_20032000 at yahoo.ca> wrote:
>
>   James,
> Thank you for the clarification.  I was also surprised that the co2 level
> was in the neighbourhood of 5,000ppm when I turned the sensor on.  I
> assumed the air quality would be better with the hatch open while I tinker
> inside. I hooked up my shop vac to the flood valve to suck clean air inside
> before I started my test.
>   Carsten  mentioned one time that he has used 20yr old absorbent.   Gamma
> came with full bottles of absorbent that have to be around 20 yrs old.  I
> experimented with the old material and it worked the same as new stuff.
> Talk about shelf life.
> Hank
>
>
>
>   On Friday, January 31, 2014 3:00:36 AM, James Frankland <
> jamesf at guernseysubmarine.com> wrote:
>   Hi Hank,
>
> Ive got one of Emiles scrubbers.  Holds the sub at 3200 - 3500 and i find
> this quite ok.  I did try an experiment (on land with an assistant
> watching) where i let CO2 get to 7500 -  10000ppm for about half an hour.
> I could tolerate this just, but i wouldnt like it to go any more.
> Kind Regards
> James
>  On 30 January 2014 20:19, Emile van Essen <emile at airesearch.nl> wrote:
>
>   Hank,
>
> Is normal, The CO2 level must rise first before the scrubber warms up and
> starts to work. In cold weather it will take longer and you may consider
> electrical preheating.
> 2300 PPM / 0,23 % is a good figure anyway!
>
> Regards, Emile
>
>   *Van:* Personal_Submersibles [mailto:
> personal_submersibles-bounces at psubs.org] *Namens *hank pronk
> *Verzonden:* donderdag 30 januari 2014 19:45
> *Aan:* Personal Submersibles General Discussion
> *Onderwerp:* [PSUBS-MAILIST] scrubber performance
>
>  Is it normal for a scrubber's performance to improve after 15 min or
> so.  My scrubber is maintaining the sub at  2,300 ppm  but started much
> higher like 3,500 ppm.   Is 2,300 ppm on the high side?
>  Hank
>
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