Posted by linda md on 11/6/2009, 4:07 pm, in reply to "Re: Increasing need for o2"
98.140.246.15
There are no warning lights or sensors on my o2 concentrator. The only light on that machine was the green light that says it is on. It was serviced about 6 months ago and I understand it was an old machine, but the o2 delivery man said it was "working just fine" at that time.
Linda
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