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Larger reservoir for Air Sense 10 Autoset
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Ernie47 Offline

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Machine: ResMed Elite
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Location: Cincinnati, OH

Post: #21
RE: Larger reservoir for Air Sense 10 Autoset
I have the same problem with my S9 Elite reservoir. I have it set at 3.5 and come morning I'm sucking dry air. I wish they would offer larger reservoirs.
02-10-2016 07:09 PM
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PaytonA Offline
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Machine: ResMed S9 VPAP Auto
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Post: #22
RE: Larger reservoir for Air Sense 10 Autoset
(02-10-2016 07:09 PM)Ernie47 Wrote:  I have the same problem with my S9 Elite reservoir. I have it set at 3.5 and come morning I'm sucking dry air. I wish they would offer larger reservoirs.

How are your leaks???

Best Regards,

PaytonA
02-11-2016 12:44 AM
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RonKMiller Offline

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Post: #23
RE: Larger reservoir for Air Sense 10 Autoset
Nalgene bottle ordered. Some nylon hose barbs, vinyl tubing and a new drill bit and I hope to be snoozing non-stop for 9 hours in high humidity.

Either that or I'm going to trash my new CPAP machine! Nervous
02-11-2016 01:38 PM
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nsherry61 Offline

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Machine: ResMed AirSense 10 Autoset
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Post: #24
RE: Larger reservoir for Air Sense 10 Autoset
(02-11-2016 01:38 PM)RonKMiller Wrote:  Nalgene bottle ordered. Some nylon hose barbs, vinyl tubing and a new drill bit and I hope to be snoozing non-stop for 9 hours in high humidity.

Either that or I'm going to trash my new CPAP machine! Nervous

You could always start with your Nalgene plumbed into your reservoir. Set the Nalgene next to, and at the same level as your reservoir and fill it up to exactly the same level as your reservoir and see what happens. Worst case, the nalgene empties into your reservoir, but not enough to damage anything. Probably, it would just act as a larger reservoir and work? In the end, maybe a low, wide, air-tight bottle filled up to the same level as the reservoir would be the best option - like a sealed hard plastic sandwich container?
02-11-2016 02:12 PM
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RonKMiller Offline

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Post: #25
RE: Larger reservoir for Air Sense 10 Autoset
(02-11-2016 02:12 PM)nsherry61 Wrote:  
(02-11-2016 01:38 PM)RonKMiller Wrote:  Nalgene bottle ordered. Some nylon hose barbs, vinyl tubing and a new drill bit and I hope to be snoozing non-stop for 9 hours in high humidity.

Either that or I'm going to trash my new CPAP machine! Nervous

You could always start with your Nalgene plumbed into your reservoir. Set the Nalgene next to, and at the same level as your reservoir and fill it up to exactly the same level as your reservoir and see what happens. Worst case, the nalgene empties into your reservoir, but not enough to damage anything. Probably, it would just act as a larger reservoir and work? In the end, maybe a low, wide, air-tight bottle filled up to the same level as the reservoir would be the best option - like a sealed hard plastic sandwich container?

Umm, yeah...

The whole idea behind the collapsible Nalgene bottle is that it is much more travel friendly than a hard container. (see a previous post) I'm also not too sure I would want water that I'll be inhaling coming into contact with a sandwich container almost for certain made in China - from polypropylene - although it is supposed to be safe and BPA free. Rolleyes Nalgene bottles are made from 100% virgin resin polyethylene, fabricated in the USA and certified BPA free. That works for me. A few drops of Betadyne, plain old tap water and some vigorous shaking for a few seconds should be more than adequate to sanitize it - the same solution I'm currently using on the CPAP reservoir.

I don't believe a sealed container would work since it would create a vacuum and possibly restrict flow, especially since I'm going to be using very small id tubing. Once again I'm not an engineer and just guessing here. To me it makes sense to have the atmospheric pressure in both chambers the same - since the CPAP reservoir is pressurized I intuitively think the aux reservoir should be too.

My biggest concern is making the compressor work any harder than it is now. There will be a little extra stress on it since it's going to be asked to fill TWO chambers with air, but as I mentioned I'm only using a 9 setting currently so should have some wiggle room there. It's entirely possible that someone who is using near the highest setting may prematurely burn out their compressor. Caveat emptor! ...and no, I do NOT intend to sell this, but if successful will let the community have access to how I did it. This won't be rocket science.

The only way to know for sure if it will work the way I think it will is to actually build it - which I intend to do next week.Eat-popcorn
02-11-2016 03:31 PM
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RonKMiller Offline

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Post: #26
RE: Larger reservoir for Air Sense 10 Autoset
My reservoir is finished. Bottom line, it works just fine.

I had enough water left over this morning to sleep for probably 18 hours without running out. After playing around it with I think the "pressure line" from the top of the CPAP hard reservoir to the bottle is not needed and may confuse the "brains" of the machine, although I could not detect any discernible difference in air flow/performance. A classic case of over engineering. I already plugged it and just had the bottom tube draining water into the CPAP reservoir. The key thing is establishing the height of the Nalgene bottle to make sure it doesn't overfill the CPAP reservoir. Lying on the same table as the machine it consistently maintained the level in the CPAP reservoir to about half full at all times.

The white plastic inlets are quick connects. The Nalgene bottle can easily be detached by pressing down on the collars for removal of the tubes, then the cap of the Nalgene may be unscrewed for filling, cleaning, etc.

It was SOooooo nice not waking up at 4 am with a dry, raspy throat and mouth or having to refill the reservoir. Wink Our dew point and RH in Tucson are extremely low right now, so this was a great time to test it out.
(This post was last modified: 02-17-2016 04:17 PM by RonKMiller.)
02-17-2016 03:59 PM
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RonKMiller Offline

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Post: #27
RE: Larger reservoir for Air Sense 10 Autoset
           
(This post was last modified: 02-17-2016 04:15 PM by RonKMiller.)
02-17-2016 04:07 PM
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RonKMiller Offline

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Posts: 12
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Post: #28
RE: Larger reservoir for Air Sense 10 Autoset
Parts:

1. Irwin 1/8"-27 NPT Tap, use with 21/64" drill but use a smaller pilot hole FIRST! Use a brand new drill and drill SLOWLY or you'll melt the plastic. You have been warned.

   

2. Note how I cut the cap to allow enough room for the quick connect to be inserted all the way flush, although this is not necessary since these are tapered threads and should seal well with just a few threads poking through the other side. I decided to put a small brass jam nut on the other side but this is overkill. Note there is very little clearance here so make sure you locate the holes in the right spots.

   

3. Watts quick connect 1/4" x 1/8" PL-3004 (2)

   

4. The tubing is a commodity 1/4" vinyl HARD tubing found on a spool in any good hardware store like ACE. You'll need a foot. Make sure to use a tubing cutter or really sharp scissors so the ends are clean and square or it will leak. A new utility blade would probably work well too.

5. Nalgene one quart collapsible wide mouth cantene (Amazon has it)

I take absolutely NO responsibility if you mess up your $$$$ machine or reservoir. Have fun and breathe humidified! Lolabove
(This post was last modified: 02-17-2016 04:59 PM by RonKMiller.)
02-17-2016 04:43 PM
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player Offline

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Post: #29
RE: Larger reservoir for Air Sense 10 Autoset
Nice to see a happy ending.
02-17-2016 11:48 PM
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