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My new machine is moaning a bit
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kally Offline

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Post: #1
My new machine is moaning a bit
I had a Remstar Pro for about 6 weeks as a loaner. It was great and practically silent. So I bought the same thing, but with fixed pressure and a heated hose (that is all that is different).

This one moans when it pushes air and the moan changes pitch when the air pressure changes due to breathing. It is not an awful sound, but very annoying, as the loaner didn't make any noise.

I have contacted the supplier, but anyone have any ideas?
07-27-2015 04:43 PM
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trish6hundred Offline

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Posts: 6,436
Joined: May 2012

Machine: Resmed S9 AutoSet for Her
Mask Type: Full face mask
Mask Make & Model: Fisher & Paykel Simplus
Humidifier: H5i Heated Humidifier
CPAP Pressure: 10 - 7-20 Cm H2O
CPAP Software: Not using software

Other Comments: I started CPAP in 2008. Totally blind since birth.

Sex: Female
Location: Missouri, USA

Post: #2
RE: My new machine is moaning a bit
Hi kally,
It's good that you contacted the supplier since it is new, so you can exchange it if you need to.
Hang in there for more responses to your post and good luck to you.

trish6hundred
07-27-2015 04:59 PM
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zonk Offline

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Posts: 7,908
Joined: Feb 2012

Machine: A10 AutoSet
Mask Type: Nasal mask
Mask Make & Model: Activa LT
Humidifier: Integrated /ClimateLineAir
CPAP Pressure: 9/13
CPAP Software: ResScan

Other Comments: CPAP since Nov 2010

Sex: Male
Location: Australia

Post: #3
RE: My new machine is moaning a bit
Maybe the air filter blown out which can happen with this machine, unlike S9 or A10 does not have filter cover
The machines uses two types of filters, washable grey filter and the throw away white fine filter (additional optional filter)

New machine comes with 2 years warranty, have it replaced and better still get an auto instead
Why auto, because only cost few dollars extra and you get two machines in one ... bargain
07-27-2015 07:10 PM
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PoolQ Offline

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Posts: 986
Joined: Jul 2015

Machine: AirCurve 10 VAUTO
Mask Type: Full face mask
Mask Make & Model: Amara View
Humidifier: Integrated
CPAP Pressure: 6.2, 15, PS4.0
CPAP Software: SleepyHead

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Sex: Male
Location: Sillicon Valley

Post: #4
RE: My new machine is moaning a bit
Does it have a humidifier? My airsense did a similar thing and inside the place I insert the humidifier are two silicon gaskets. One or both of them were not seating correctly with the water module and doing exactly like you describe. I ran my finger around them to make sure they were seated fully in the main unit, put the water tank back in and no more noise. No idea if your system is constructed like this but you might check it out. It was air leaking out around one of these gaskets. Good luck
07-27-2015 07:17 PM
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kally Offline

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Post: #5
RE: My new machine is moaning a bit
I took the humidifier off and it is definitely the machine making the noise. It whines up and down as I breathe. I mean it is not loud, but loud enough to annoy me.

I shall try a replacement, but if that doesn't work I will ask for another model. The one I tried in my test time of 6 weeks was a Resmed auto and it didn't make a sound. I think there is a $400 difference, but that would be worth it to me.
07-28-2015 06:25 PM
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PollCat Offline
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Posts: 1,576
Joined: Feb 2012

Machine: ResMed S9 Autoset
Mask Type: Nasal pillows
Mask Make & Model: ResMed AirFit P10
Humidifier: H5i Cleanable with ClimateLine
CPAP Pressure: 10 - 18
CPAP Software: SleepyHead

Other Comments: CPAP-ing since 1995; Type 2 Diabetes; Chronic Asthma; Gout

Sex: Male
Location: Westfield, IN

Post: #6
RE: My new machine is moaning a bit
(07-27-2015 04:43 PM)kally Wrote:  I had a Remstar Pro for about 6 weeks as a loaner. It was great and practically silent. So I bought the same thing, but with fixed pressure and a heated hose (that is all that is different).

This one moans when it pushes air and the moan changes pitch when the air pressure changes due to breathing. It is not an awful sound, but very annoying, as the loaner didn't make any noise.

I have contacted the supplier, but anyone have any ideas?

Your supplier must have given you one of the ones I returned for the same reason. Oh-jeez Back in January 2011, I tried two of these machines and had the same experiences with each. I finally gave up and got the ResMed S9.


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07-28-2015 09:47 PM
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BrownCow67 Offline

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Posts: 5
Joined: Apr 2015

Machine: PR System One 60 Series Auto A-Flex
Mask Type: Nasal pillows
Mask Make & Model: ResMed Airfit P10
Humidifier: Included in CPAP
CPAP Pressure: 6-14
CPAP Software: SleepyHead

Other Comments:

Sex: Male
Location: Calgary, Canada

Post: #7
RE: My new machine is moaning a bit
(07-28-2015 06:25 PM)kally Wrote:  I took the humidifier off and it is definitely the machine making the noise. It whines up and down as I breathe. I mean it is not loud, but loud enough to annoy me.

I shall try a replacement, but if that doesn't work I will ask for another model. The one I tried in my test time of 6 weeks was a Resmed auto and it didn't make a sound. I think there is a $400 difference, but that would be worth it to me.

Mine makes the same noise, quiet, but different pitches with the different pressures on inhale and exhale. I put a towel under it, which seems to have made it a little less obtrusive.
07-29-2015 10:25 AM
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kally Offline

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Post: #8
RE: My new machine is moaning a bit
I got a replacement demo model today and lordy lord it moans too. I am at the point where I don't want to be little miss fuss budget, but i do want to get the right machine.

The very first identical model loaner did not moan. That is what I am looking for.

If I change brands, which do you recommend as the world's quietest machine. I am at fixed pressure, but I would pay for the other type if it got me a great machine. Thanks
07-30-2015 09:06 PM
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kally Offline

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Posts: 38
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Post: #9
RE: My new machine is moaning a bit
My supplier changed my machine for a Resmed and I don't have any more moaning. Thank god.
08-16-2015 12:01 PM
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zonk Offline

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Posts: 7,908
Joined: Feb 2012

Machine: A10 AutoSet
Mask Type: Nasal mask
Mask Make & Model: Activa LT
Humidifier: Integrated /ClimateLineAir
CPAP Pressure: 9/13
CPAP Software: ResScan

Other Comments: CPAP since Nov 2010

Sex: Male
Location: Australia

Post: #10
RE: My new machine is moaning a bit
(08-16-2015 12:01 PM)kally Wrote:  My supplier changed my machine for a Resmed and I don't have any more moaning. Thank god.
Good news
Which ResMed machine (S9 or AirSesne 10) and what model
08-16-2015 03:28 PM
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