[News] RECALL THREAD-- IMPORTANT PHILIPS DREAMSTATION & SYSTEM ONE USERS - Printable Version +- Apnea Board Forum - CPAP | Sleep Apnea (https://www.apneaboard.com/forums) +-- Forum: Public Area (https://www.apneaboard.com/forums/Forum-Public-Area) +--- Forum: Main Apnea Board Forum (https://www.apneaboard.com/forums/Forum-Main-Apnea-Board-Forum) +--- Thread: [News] RECALL THREAD-- IMPORTANT PHILIPS DREAMSTATION & SYSTEM ONE USERS (/Thread-News-RECALL-THREAD-IMPORTANT-PHILIPS-DREAMSTATION-SYSTEM-ONE-USERS) Pages:
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
|
RE: RECALL THREAD-- IMPORTANT PHILIPS DREAMSTATION & SYSTEM ONE USERS - cathyf - 07-02-2021 (07-02-2021, 02:45 PM)btreger Wrote: The SoClean product came to the marketplace in February 2012. That gave CPAP manufacturers 9 years to upgrade their equipment to make them ozone tolerant if they really cared about us users. They had many options available but chose to do nothing. Only now are they raising concerns that the ozone could potentially cause damage to their machines. Cleaning as a whole category of action has inherent problems. The purpose of cleaning is to remove/damage/kill the things that you don't want there, and it's very common that you have to be careful not to remove/damage/kill the thing that you are trying to get clean. Bleach is great on stains on white fabric, but it takes the dye out of colored fabrics and it eats away whites over time -- so you should only use bleach on whites and only when there's a stain. And there are some housewives who are obsessive-compulsive and they get hole-y underwear and take much more frequent trips to the store to replace the clothes that they've worn out prematurely with washing everything too hard too often. Ozone is a lot like bleach -- the chemical processes that they use to clean are actually closely related. Using ozone on mask or hose is like using bleach constantly on whites that are already clean. Using ozone on the inside of the cpap machine is like pouring bleach on your favorite red t-shirt which wasn't even dirty and then complaining that the shirt manufacturer didn't make a bleach-resistant shirt! RE: RECALL THREAD-- IMPORTANT PHILIPS DREAMSTATION & SYSTEM ONE USERS - Phaleronic - 07-02-2021 (07-01-2021, 11:20 PM)qwerty42 Wrote: Eek, sorry everyone! Thanks for the heads-up. I haven't disassembled one of these myself and didn't realize there were pressure ports in those locations. The pair of side-by-side ports are almost surely where flow rate is measured with a differential pressure sensor and flow restrictor built into the chamber. I have a second old apap ds1 that I tried this on, and one of the flow sensors goes through a hole in the foam and the opening is flush with the bottom of the foam. I cut using my dremel on the outside of each piece of the installed foam. I sealed the cuts with hot glue then let washed it out and let it dry for 8 hours. When I slept with it I did not sleep well, and I believe that the foam needs to be in the chamber to allow properly metered airflow as the space was not designed to be empty. RE: RECALL THREAD-- IMPORTANT PHILIPS DREAMSTATION & SYSTEM ONE USERS - Phaleronic - 07-02-2021 (07-02-2021, 03:21 PM)cathyf Wrote: Cleaning as a whole category of action has inherent problems. The purpose of cleaning is to remove/damage/kill the things that you don't want there, and it's very common that you have to be careful not to remove/damage/kill the thing that you are trying to get clean. Bleach is great on stains on white fabric, but it takes the dye out of colored fabrics and it eats away whites over time -- so you should only use bleach on whites and only when there's a stain. And there are some housewives who are obsessive-compulsive and they get hole-y underwear and take much more frequent trips to the store to replace the clothes that they've worn out prematurely with washing everything too hard too often. Four years ago at my DME when I first received my machine they had stacks of the so-clean devices in their main office, I was put off by the cost of them and I was on another forum where people said not to use them as the ozone was harmful to the machines/masks/tubes, so I never bought into the snakeoil bs. I like your simile. RE: RECALL THREAD-- IMPORTANT PHILIPS DREAMSTATION & SYSTEM ONE USERS - StratCat48 - 07-02-2021 If you're using a SoClean or any other type of ozone generator to clean, there's more to be concerned with than your CPAP degrading. Ozone is basically potentially harmful to your health when inhaled. Why would someone intentionally expose themselves to something as harmful as ozone? The SoClean manual has ozone warnings, but how can you be assured the levels in a room where a SoClean is used are safe or not and every individual may have differing thresholds of possible irritation and/or injury. When my wife and I chose an indoor air cleaner we were careful to chose one that did not use ozone. RE: RECALL THREAD-- IMPORTANT PHILIPS DREAMSTATION & SYSTEM ONE USERS - WakeUpTime - 07-02-2021 Another Class Action Developing... Quote: [*Web-link to details at the press release news site PRNEWSWIRE has been removed as it's deemed a "commercial link".]
RE: RECALL THREAD-- IMPORTANT PHILIPS DREAMSTATION & SYSTEM ONE USERS - qwerty42 - 07-03-2021 (07-02-2021, 03:34 PM)Phaleronic Wrote: I have a second old apap ds1 that I tried this on, and one of the flow sensors goes through a hole in the foam and the opening is flush with the bottom of the foam. I cut using my dremel on the outside of each piece of the installed foam. I sealed the cuts with hot glue then let washed it out and let it dry for 8 hours. When I slept with it I did not sleep well, and I believe that the foam needs to be in the chamber to allow properly metered airflow as the space was not designed to be empty. Interesting -- thanks for the extra info. Here's a diagram I made in case anyone's interested. The only sensor that would be affected by cutouts to remove the foam is the one I labeled #2 -- but it's a very important one, unfortunately. Cutouts downstream of it (meaning further along the path toward the blower intake) won't change its readings, but cutouts upstream of it (toward the inlet filter) will cause it to read erroneous values. That particular sensor, since it's measuring flow rate, is probably being used to determine obstructions, hypopneas, clear airway apneas, and basically everything else except for the actual pressure in your hose, so it's very important that it is working correctly. I can't tell from the pictures I've seen whether or not the foam plays a role in its measurement. There are a few different ways it could be configured to take this measurement (measuring static pressure on either side of a restrictor; or using a static pressure port and dynamic pressure port like a pitot tube; or diverting airflow directly through it if it's actually a dedicated mass airflow sensor). I'd need to take a closer look at that middle section of the foam chamber and see where the ports go and how they're shaped to know which of these it is. If I have time this weekend I'll take apart my own DreamStation and reverse engineer this definitively for you all. RE: RECALL THREAD-- IMPORTANT PHILIPS DREAMSTATION & SYSTEM ONE USERS - Jeremy H - 07-03-2021 They have 1 tech for phone support when you have to call them, for the entire country. Prepare to be on hold for at least 1 hour if you do call. Product support is extremely bad anyway. RE: RECALL THREAD-- IMPORTANT PHILIPS DREAMSTATION & SYSTEM ONE USERS - Coffee Man - 07-03-2021 This may be a separate topic, but given the concerns about the foam in the Philips Dreamstation, does anyone know what type of foam is in the ResMed Airtouch cushion? RE: RECALL THREAD-- IMPORTANT PHILIPS DREAMSTATION & SYSTEM ONE USERS - RayBee - 07-03-2021 Great post (#536) qwerty42. That all makes perfectly good sense. I was a tech at a weather instrumentation company many years ago, and the dual port pressure sensor in the middle looks somewhat familiar to some of the sensors we used. Since there is some speculation that the foam may play an important roll in these sensors measuring airflow accurately, and I agree that it likely does since there will be a Venturi effect in the center restriction area where the airflow sensor is located, has anyone tried to find a replacement? There are lots of foam insulation products and foam pads with sticky back on Amazon. I don't know what material would be safe for this use, or the thickness needed. But it would be really interesting if there was an off-the-shelf foam that would work and be safe. All we need then would be a scale template as a cutting guide. As far as function, I think the actual material used in the foam would be less of a factor versus the shape and placement. Then of course as for safety, the material used would take precedence. RE: RECALL THREAD-- IMPORTANT PHILIPS DREAMSTATION & SYSTEM ONE USERS - btreger - 07-03-2021 (07-02-2021, 09:54 PM)WakeUpTime Wrote: Another Class Action Developing... Very interesting, great bit of research. We now have posted 2 Law Firms involved in Class Action Lawsuits. I think it would benefit all of us to know how many members of this thread have signed on for a lawsuit or intend to and which firm did they choose. The reason is simple, the more users who have signed up, the better chance it would potentially have in our courts, it's not meant to be personnel. |