(09-10-2012, 04:09 PM)worthog Wrote: Was just wondering if I need to do the following to my Resmed S9
1/ turn it off before i remove the SD card
2/ turn it off each day, or is it ok to leave it running all the time
ResMed recommends unplugging the machine before removing the SD card. However, many folks on this forum do not (I don't) and so far, I don't believe anyone has reporting having a problem. I have a spare SD card, and the machine will run without one, so the downside risk is pretty small (IMHO). On the other hand, if it would worry you not to be following the directions, by all means, unplug the machine first. It can't do any harm, and it might help.
As to question #2, I presume you are again talking about leaving the machine plugged in. There would be no sense in having the blower running all day, and I don't think the machine would even do that - at least, my S9 Auto Set seems to shut itself down after a few seconds if there is no resistance at the other end of the hose. I think the vast majority of folks do leave the machines plugged in. They do draw a small amount of current to run the indicator lights and electronics, but not enough to matter.
You might want to unplug the machine during thunderstorms, as nearby lightning strikes can be very damaging to electronic equipment. Other than that, though, I can't see any reason not to just leave it plugged in.