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Airsense rainout: I give up, so back it goes.
#1
Airsense rainout: I give up, so back it goes.
More rainout last night. not a lot, but enough to get the knocking noise in the hose as the water puddles/moves around.

I have tried tweaking settings, using a hose cover and even replaced the tube, all to no effect. I didn't have so much trouble with rainout when using my old S9, strangely, so I'm starting to wonder if there's a QA problem with current build Autosense? Though it seems like it's a common problem with the Airsense, it's not universal problem, suggesting it isn't a design problem.

So I called my supplier in Sydney and they told me to send the machine back for evaluation. I will report the outcome for those who might have the same issue.
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#2
RE: Airsense rainout: I give up, so back it goes.
Does your hose run uphill and then back down to your mask? Simple question I know, but important. 

My machine rests on a bedside stand. The hose runs uphill (at least a 45-50 degree angle) to the hose hanger mounted on top of our headboard. It then obviously, runs straight down to my mask. 

Never had a rain-out issue at all that way.
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#3
RE: Airsense rainout: I give up, so back it goes.
No, it's more or less level. I think Resmed say that the machine should be higher than your head, because water cannot re-enter the chamber due to the design? I know that was the case with my old S9. Is the Airsense different?

That said, I use a lovely antique mahogany herb cabinet alongside my bed, that I would be loathe to move :-)
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#4
RE: Airsense rainout: I give up, so back it goes.
Hi SteveSP, is the hose heated? I know zero about the machine you list.
What is your level of humidity on the machine?
Bedroom humidity?
Bedroom temperature?
Adelaide has been both cold and humid this winter but I've been gurgle free this year.
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#5
RE: Airsense rainout: I give up, so back it goes.
When I picked up my machine, the RT told me how to place it, among other instructions and tips. He told me to insure that the hose runs uphill. Initially, the first two weeks or so, the hose just ran over to the bed and laid on top of me.

I got tired of that nonsense pretty quick. I then decided to fabricate my own hose holder / hanger. BIG, BIG improvement in comfort and hose management. 

I can't speak to what ResMed may say, but I do know the way it is now, it works great.
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#6
RE: Airsense rainout: I give up, so back it goes.
(06-25-2020, 09:14 PM)SleepinginAdelaide Wrote: Hi SteveSP, is the hose heated? I know zero about the machine you list.
What is your level of humidity on the machine?
Bedroom humidity?
Bedroom temperature?
Adelaide has been both cold and humid this winter but I've been gurgle free this year.

Yes, it has a heated hose. Humidity is set somewhere in the middle, tube temp 28C or so. I've tried other settings. I have no idea what the room humidity is but temp in the early hours drops to around 10C (at the lowest) I would guess.

This machine has been troublesome with respect to rainout since I got it in the summer, when humidity was relatively high and room temp >18C.

I also find that the Airsense is less effective in preventing dry mouth, which makes little sense because it is using 96% of the water. I'm baffled.
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#7
RE: Airsense rainout: I give up, so back it goes.
(06-25-2020, 09:17 PM)Big Guy Wrote: When I picked up my machine, the RT told me how to place it, among other instructions and tips. He told me to insure that the hose runs uphill. Initially, the first two weeks or so, the hose just ran over to the bed and laid on top of me.

I got tired of that nonsense pretty quick. I then decided to fabricate my own hose holder / hanger. BIG, BIG improvement in comfort and hose management. 

I can't speak to what ResMed may say, but I do know the way it is now, it works great.

The risk of course is that water might not have an easy path back into the tank and instead leak onto the heater plate, or pool somewhere. I should go and peer inside it. On the Devilbiss, the water ran straight back into the tank - it couldn't go anywhere else.

I have most of the hose under the covers, next to my body, and the machine quite close to the bed so that very little of the hose is out in the 'cold' room, so to speak.

>EDIT<

I've looked at the machine and it seems to me that water running back down the hose can only go into the tank. I have emailed the folks I bought the machine from (my experience is that Resmed in Australia either don't respond or literally take weeks to get back to me) asking if they have any advice in this regard.

If I CAN just lower the machine safely, that should fix the problem.
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#8
RE: Airsense rainout: I give up, so back it goes.
I'd give it a try (lowering the machine) and see how it works for you. 

And, once you hang the hose, you'll never go back!  Bigwink
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#9
RE: Airsense rainout: I give up, so back it goes.
A few things for your consideration:
3 settings affect humidity and rainout, humidity setting of Off, 1-8, Heated hose setting, and Mode of Auto or Manual. Try editing these maybe adding a bit more heated hose.

Other things, as Big Guy mentions the hose hanger and hose angle, water should flow back to the tub without issue. Look at the lid of the tub. Those crossing plastic tubes shaped like an X is the air passage. If you're concerned about damage to the wood furniture, get a shallow nearly flat rubber or plastic tray to set your machine in, maybe something sort of like a fast food serving tray, a greenhouse germination tray or rubberized boot tray in shape/dimensions.
Dave

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INFORMATION ON APNEA BOARD FORUMS OR ON APNEABOARD.COM SHOULD NOT BE CONSIDERED MEDICAL ADVICE. ALWAYS SEEK THE ADVICE OF A PHYSICIAN BEFORE SEEKING TREATMENT FOR MEDICAL CONDITIONS, INCLUDING SLEEP APNEA. INFORMATION POSTED ON THE APNEA BOARD WEBSITE AND FORUMS ARE PERSONAL OPINION ONLY AND NOT NECESSARILY A STATEMENT OF FACT.
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#10
RE: Airsense rainout: I give up, so back it goes.
The solution is hose cover + set climate control to Auto. That solves most problems. Hope it solves yours.
Coffee

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Never Give In, Never Give Up




INFORMATION ON APNEA BOARD FORUMS OR ON APNEABOARD.COM SHOULD NOT BE CONSIDERED AS MEDICAL ADVICE. ALWAYS SEEK THE ADVICE OF A PHYSICIAN BEFORE SEEKING TREATMENT FOR MEDICAL CONDITIONS, INCLUDING SLEEP APNEA. 
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