Resmed Autosense 10 noise

cands wrote:They had to replace a part called 'Pneumatic Block'.

do you have any more detail on this?

Interesting! If this "pnematic block" is an actual "thing",
it gives owners of noisy machines something to ask for.

palerider wrote:

cands wrote:They had to replace a part called 'Pneumatic Block'.

do you have any more detail on this?

Take a look at the last couple of pages of the thread on APNEABOARD: "ResMed AirSense 10 makes loud noise when inhaling"

Below is a transcript from the repair order.

CONFIRMED NOISE FROM MOTOR ONLY DURING INHALATION.
DISASSEMBLED, INSPECTED INTERNALLY. RE-ASSEMBLED WITH NEW PNEUMATIC BLOCK.

PARTS: PNEUMATIC BLOCK - AIR 10, PART NUMBER 19696

I googled as many combinations of the description and part number, but to no avail. I am not really sure what it is, although my supplier referred to a 'seal'. It would be good to know.

When I saw your post Cands, I googled "pneumatic block" too...led me to that board, then looked up and saw that you were the poster! I didn't know if I could copy and paste from elsewhere, so thanks for posting it!

Some posters thought it might be a humidifier seal so I played around with mine. Full water, no water. Humidifier on/off. Filter in/out. No difference. Then I remembered I had an extra water chamber leftover from my "brick". Nope, no difference. Most of the posters with problems were from Australia. How did a Wheezy Whale migrate from your waters to my landlocked U.S. state?

Glad you got yours fixed. DME is ordering a new one, but if there's any balking, I've now got a PART NUMBER as a possible culprit to point to, and not just "whale wheezes".

cands wrote:

palerider wrote:

cands wrote:They had to replace a part called 'Pneumatic Block'.

do you have any more detail on this?

Take a look at the last couple of pages of the thread on APNEABOARD: "ResMed AirSense 10 makes loud noise when inhaling"

Below is a transcript from the repair order.

CONFIRMED NOISE FROM MOTOR ONLY DURING INHALATION.
DISASSEMBLED, INSPECTED INTERNALLY. RE-ASSEMBLED WITH NEW PNEUMATIC BLOCK.

PARTS: PNEUMATIC BLOCK - AIR 10, PART NUMBER 19696

I googled as many combinations of the description and part number, but to no avail. I am not really sure what it is, although my supplier referred to a 'seal'. It would be good to know.

thank you for the information.

I see references in the astral machine to a pneumatic block that's "good for four years of continuous use" leading me to think that they might be referring to the whole air system inside, which is sort of a unit, in the air10 machines.

Ok, I found a patent that identifies the "pneumatic block" as the air handling canister inside, which includes the motor, tubine, air chambers and such. item 4020 in figure 3b, https://patents.google.com/patent/US20160199612A1

palerider wrote:I see references in the astral machine to a pneumatic block that's "good for four years of continuous use" leading me to think that they might be referring to the whole air system inside, which is sort of a unit, in the air10 machines.

Ok, I found a patent that identifies the "pneumatic block" as the air handling canister inside, which includes the motor, tubine, air chambers and such. item 4020 in figure 3b, https://patents.google.com/patent/US20160199612A1

Thanks Palerider. So it looks like they replaced a module; one of the major ones of the unit. I wished they would have given me a new replacement unit, but consumer law in Australia is a bit lax in this area. They are well within their rights to repair a unit, even if it is defective right out of the box. Anyway, the fact that they replaced that whole module, rather than trying to replace some tiny part or other, gives me hope that my machine will now be fine for many years to come.

It would be interesting to know how much it cost, but I think we may never know.

cands wrote: I wished they would have given me a new replacement unit, but consumer law in Australia is a bit lax in this area.

I've never had an issue with repaired/refurbished equipment, it's often examined closer than stuff that spews off the mass production line (in most any manufacturing environment). I understand your feelings, but your repaired model may have been checked over with more care than the average 'new' one... just a thought.

cands wrote:

palerider wrote:I see references in the astral machine to a pneumatic block that's "good for four years of continuous use" leading me to think that they might be referring to the whole air system inside, which is sort of a unit, in the air10 machines.

Ok, I found a patent that identifies the "pneumatic block" as the air handling canister inside, which includes the motor, tubine, air chambers and such. item 4020 in figure 3b, https://patents.google.com/patent/US20160199612A1

Thanks Palerider. So it looks like they replaced a module; one of the major ones of the unit.

Not alone 'major,' one may say 'sine qua non.' If one looks further in the patent documentation to sheet 11 of 91 (figure 3e) which contains the block diagram of the unit; it shows 4202 as containing every single moving part of the air handling system. Other than a one-way valve at the interface with the humidifier and external doors, buttons, etc., it seems the 'pneumatic block' is virtually the whole machine. Also, one should take seriously PR's point that this assembly may well have survived a very rigorous QC process much more than in initial production. Take heart in that it may well be a much better system than what you sent them.
See: https://patentimages.storage.googleapis ... 160714.pdf

I have my machine on the night stand next to my bed, BUT , I also have it set on a rubber type pad, maybe a old mouse pad would work. My machine is silent as it can be. Don't hear a thing when it's running...

OP checking back in.

Well, I had found the "whale" thread, and since my noise wasn't quite what I call a whale breathing, I thought I would post and ask that question.

To answer some of you:

No, it is not in a new place, position or otherwise any change.

No, it is not a connection. This machine has been in and out of my bedroom a few times, and the noise is the same wherever I am.

No, I do not have Sleepyhead program and didn't on my last machine either. My stats are excellent acording to my sleep Dr. and the card readouts this spring, and he saw no reason to make any changes.

Yes, I do use EPR on both this machine and my last one. No change there.

Mask. Because of this thread I remembered I got a different mask (Whisp) with this machine as my old one was unavailable thru the DME at that time. It made so much noise I finally ditched it and went back to my old one and that is when I started noticing the noise.

Thanks you CANDS for the information! I will be calling my DME and ask about replace or repairing this one.