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<BODY BGCOLOR="white" TEXT="black" LINK="blue" VLINK="blue" ALINK="blue" > <P><FONT FACE="Arial, Helvetica, sans-serif" SIZE="2"><A HREF="http://www.choicehme.com/"><H1></H1></A>. This can also be due to excessive condensation caused by the warm oxygen flow in the tube contacting a cold tile floor, thus creating "rainout" in the tube. My concentrator has a warning light and alarms. <a href="http://www.yahoo.com" target="_blank"><img src="image3.gif"></a> . </FONT></P> </BODY>