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</o:shapelayout></xml><![endif]--></head><body lang=EN-US link=blue vlink=purple><div class=WordSection1><p class=MsoNormal><span style='font-size:10.0pt;font-family:"Arial",sans-serif;color:blue'>Peter, do you mean it only gets down to 55 microns with the diffusion pump <b>on</b> or <b>off</b>?<o:p></o:p></span></p><p class=MsoNormal><span style='font-size:10.0pt;font-family:"Arial",sans-serif;color:blue'>John<o:p></o:p></span></p><p class=MsoNormal><span style='font-size:10.0pt;font-family:"Arial",sans-serif;color:blue'><o:p> </o:p></span></p><div><div style='border:none;border-top:solid #E1E1E1 1.0pt;padding:3.0pt 0in 0in 0in'><p class=MsoNormal><b>From:</b> RASMB [mailto:rasmb-bounces@list.rasmb.org] <b>On Behalf Of </b>Prevelige, Peter Edward, Jr<br><b>Sent:</b> Tuesday, February 07, 2017 2:28 PM<br><b>To:</b> rasmb@rasmb.org<br><b>Subject:</b> [RASMB] Vacuum Problem Troubleshooting<o:p></o:p></p></div></div><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal>Hi All<o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal>Our XL-A is having problems achieving vacuum. It pumps down quickly to about 100 micron, then slowly down to about 55 micron where it stalls. Can anybody give me hints on how to go about troubleshooting the vacuum system. I’ve cleaned the chamber and cleaned and regreased the door seal. <o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal>Thanks<o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal>Peter<o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal><span style='font-size:10.0pt;color:#1F497D'>Peter E. Prevelige Jr.</span><span style='font-size:10.0pt'><o:p></o:p></span></p><p class=MsoNormal><span style='font-size:10.0pt;color:#1F497D'>Professor</span><span style='font-size:10.0pt'><o:p></o:p></span></p><p class=MsoNormal><span style='font-size:10.0pt;color:#1F497D'>Dept. of Microbiology, BBRB 416/6</span><span style='font-size:10.0pt'><o:p></o:p></span></p><p class=MsoNormal><span style='font-size:10.0pt;color:#1F497D'>Univ. of Alabama @ Birmingham</span><span style='font-size:10.0pt'><o:p></o:p></span></p><p class=MsoNormal><span style='font-size:10.0pt;color:#1F497D'>845 19th St. South</span><span style='font-size:10.0pt'><o:p></o:p></span></p><p class=MsoNormal><span style='font-size:10.0pt;color:#1F497D'>Birmingham AL. 35294-2170</span><span style='font-size:10.0pt'><o:p></o:p></span></p><p class=MsoNormal><span style='font-size:10.0pt;color:#1F497D'>Phone 205 975-5327</span><span style='font-size:10.0pt'><o:p></o:p></span></p><p class=MsoNormal><span style='font-size:10.0pt;color:#1F497D'>FAX 205 975-5479</span><span style='font-size:10.0pt'><o:p></o:p></span></p><p class=MsoNormal><span style='font-size:10.0pt;color:#1F497D'><a href="mailto:prevelig@uab.edu">prevelig@uab.edu</a></span><span style='font-size:10.0pt'><o:p></o:p></span></p><p class=MsoNormal><span style='font-size:10.0pt;color:#1F497D'><a href="http://www.preveligelab.org">http://www.preveligelab.org</a></span><span style='font-size:10.0pt'><o:p></o:p></span></p><p class=MsoNormal><span style='font-size:10.5pt;font-family:Consolas;color:#1F497D'> </span><o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p></div></body></html>