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Is it usual for the concentrator to take as long as 15 minutes to come up to normal oxygen when concentrator has been off for 30 minutes? Does the warning sound and lite also come on them?

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That is not normal operation. You need to contact a service or support rep from Fujitsu or contact the company you purchased the unit from.

These should produce oxygen within a few seconds of being turned on and be up to full flow in well under a minute.That is going to vary by model but 15 minutes is too long.

Posted on Sep 01, 2010

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ps please rate my answer as very helpful.. thanks

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