m-series hidden filter

sleepngo · Post by **sleepngo** » Mon Sep 10, 2007 12:16 pm

[quote="momadams"]Yes, they do answer questions quickly.

"It appears you are speaking about a piece of foam that is used as a sound absorber. You should not have taken the unit apart beyond what is detailed in the User manual. The unit should be sent back to Respironics to ensure the proper replacement of the foam. This will need to be accomplished through your provider."

Shari

sleepngo · Post by **sleepngo** » Mon Sep 10, 2007 6:41 pm

I just took a closer look at that hidden filter and it looks like the air flow through it is mixed with the filtered air that flows through the white fine and dark dense filter, the ones we change on a regular basis. So if that is in fact the case, than air flowing through the white fine filter is being contaminated with air flowing through the hidden course filter making the fine filter useless. No wounder I wake up in the morning and start sneezing. What do you guys think is this a bad design feature of these machines?

Dan

milkman · Post by **milkman** » Mon Sep 10, 2007 8:48 pm

Yes, this filter/sound absorber is definitely on the breathing circuit. They must have figured the air coming through the two little holes was irrelevant, but the amount of dust we are finding proves otherwise. As dirty as mine was, I'm more than happy to risk invalidating the warranty to know that the filter stays clean. I may get ultra fine filters for the tank and cut them to fit this area. Or I may just tape over the two little holes. I really don't see why they need to be there.

sleepngo · Post by **sleepngo** » Mon Sep 10, 2007 10:07 pm

One other question, if in fact the air we breath is also used to cool the machines, then there may be another problem to deal with, contaminated air coming of the circuit boards, but I'm sure that they would divert some of the incoming air for cooling and the rest for breathing, you think?

Dan

milkman · Post by **milkman** » Mon Sep 10, 2007 11:14 pm

I really don't think they are concerned about cooling the circuit board, I don't think it generates enough heat to bother with. When I look at a disassembled tank at http://www.internetage.com/cpapinfo/, I don't see any evidence that there is cooling air being diverted from the breathing circuit.

I like a clean machine and have changed the fine white filter every two weeks and washed the foam filter weekly since the machine was barnd new. It is just very disappointing that you spend the time and money to do this and find there is air creeping in from elsewhere that they don't tell you about or even want you to know about. How are we supposed to send the machine back to have the foam replaced when we are not even told it is there?

Goofproof · Post by **Goofproof** » Tue Sep 11, 2007 5:42 am

milkman wrote: When I look at a disassembled tank at http://www.internetage.com/cpapinfo/, I don't see any evidence that there is cooling air being diverted from the breathing circuit.

The "Tank and the "M"eries, are not the same units, neighter are the Resmed's or PB's or VWs. Jim

milkman · Post by **milkman** » Tue Sep 11, 2007 9:39 am

quote="Goofproof"]

milkman wrote: When I look at a disassembled tank at http://www.internetage.com/cpapinfo/, I don't see any evidence that there is cooling air being diverted from the breathing circuit.

Goofproof wrote:The "Tank and the "M"eries, are not the same units, neighter are the Resmed's or PB's or VWs. Jim

I understand that, I just referenced the tank because it is the nearest unit to the m-series that has dismantled photos available. I figured if the tank board doesn’t need cooling, then the m-series shouldn't either. But then, what do I know!

Goofproof · Post by **Goofproof** » Tue Sep 11, 2007 12:12 pm

milkman wrote:quote="Goofproof"]
milkman wrote: When I look at a disassembled tank at http://www.internetage.com/cpapinfo/, I don't see any evidence that there is cooling air being diverted from the breathing circuit.

Goofproof wrote:The "Tank and the "M"eries, are not the same units, neighter are the Resmed's or PB's or VWs. Jim

I understand that, I just referenced the tank because it is the nearest unit to the m-series that has dismantled photos available. I figured if the tank board doesn’t need cooling, then the m-series shouldn't either. But then, what do I know!

[/quote]

The "Tank", should be hotter, except for the fact it was designed correctly, because the power supply is built inside the case. Of course, the "Tank doesn't have the Blue Fog Light Leds.

The "M"eries shouldn't need cooling, the first bunch had "Water Cooling" from the HH Leak.

Daddysaur · Post by **Daddysaur** » Tue Sep 11, 2007 7:20 pm

Try some inline filters in the hose between the machine and the mask for clean air. I use inline filters and notice the dust and pollen only after I get up and remove the mask. Some sneezing first thing in the morning is the proof I had clean air all night with the filter.
I have not disassembled the machine to look at the airflow paths but it sounds like a poor design. And the idea that only they can reassemble, give me a break.

sleepngo · Post by **sleepngo** » Wed Sep 12, 2007 11:36 am

Last night I attended a awake group meeting and the guest speaker was a Respironics rep. for the West coast. I ask him about the hidden air filter and about cleaning it, his reply was don't clean the filter but send it to Respironics for cleaning and recalibration, this filter has something to do with calibrating CM pressure. I would think that cleaning it would maintain the proper calibrated pressure, what do you think?

I ask him why they pulled the software(encore pro 1.8.49) and his answer is that the FDA made them do it, that they had nothing to do with yanking it off the market for general use, they had to comply with FDA rules, what do you think?

NeedinZs · Post by **NeedinZs** » Wed Sep 12, 2007 11:49 am

I think they may be paying him too much money!

Wulfman... · Post by **Wulfman...** » Wed Sep 12, 2007 12:03 pm

sleepngo wrote:Last night I attended a awake group meeting and the guest speaker was a Respironics rep. for the West coast. I ask him about the hidden air filter and about cleaning it, his reply was don't clean the filter but send it to Respironics for cleaning and recalibration, this filter has something to do with calibrating CM pressure. I would think that cleaning it would maintain the proper calibrated pressure, what do you think?

I ask him why they pulled the software(encore pro 1.8.49) and his answer is that the FDA made them do it, that they had nothing to do with yanking it off the market for general use, they had to comply with FDA rules, what do you think?

So, the converse of this is that by leaving it dirty and that nobody knows or will ever do anything about it will have a positive effect on the "calibration"?

I wish somebody would state WHICH FDA rule or what law is being violated!

Does one of your legs feel any longer?

Den

Snoredog · Post by **Snoredog** » Wed Sep 12, 2007 12:24 pm

I just looked at my A-Flex, it takes a T-9 torx driver by the way, there is a foam filter inside but it appears to to be there only to filter the minute air that would possibly be sucked in via those 2 tiny holes at the bottom of the filter you have access to.

Those appear to be water drainage holes to me, should you ever get water in the machine it may drain from those 2 holes as they are present on the main housing to the inside of the machine and since they are at the very bottom.

I doubt you could take in enough air via those 2 tiny holes to be of any concern even if your house was dusty enough to clog that internal filter.

6PtStar · Post by **6PtStar** » Wed Sep 12, 2007 12:24 pm

Send it to Respronics. But they won't let me send it. My brick and morter DME doesn't won't to send it. Besides if they did send it I get a loner " a bottom end PB with nothing but a On/Off switch". I'm not sure I can stand that for 6 weeks +.

I think I will keep cleaning mine.

sleepngo · Post by **sleepngo** » Wed Sep 12, 2007 12:53 pm

I think what they are implying is that middle class and senior class socity are too smart for they're own good. That we have to be put in our place. Too much education is bad for what is right!

Dan

m-series hidden filter

Hidden air filter

Re: Hidden air filter