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<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D">Patrick,<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D"> As ironic as this may sound, my three older (2002-2005) Haskris chillers are the most reliable units that we have! I always liked these because there are
no proprietary components in them. Most anything in these units can be purchased off the shelf from an industrial supplier. The older units always had Copeland compressors which can be found in 75% of all commercial coolers and air conditioners. I don’t know
how the new ones are set up and if they are trying to cut costs but the water pumps are generally Procon with a GE motor coupled by a sacrificial brass “spider” It is critical that these two components are properly aligned but if they aren’t, the brass spider
wears prematurely before stressing the pump shaft out of true and thus creating a seal leak. I must ask you what the PH of the recirculating water is and if you spike it with any additives. Distilled water is best for these units. Do NOT use DI.<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D"> Steve Paolini<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D"> Equipment Dood<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="font-size:14.0pt;font-family:"Calibri","sans-serif";color:#1F497D">Steve Paolini<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:14.0pt;font-family:"Calibri","sans-serif";color:#1F497D">Principal Equipment Engineer<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:14.0pt;font-family:"Calibri","sans-serif";color:#1F497D">Harvard University Center for Nanoscale Systems<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:14.0pt;font-family:"Calibri","sans-serif";color:#1F497D">11 Oxford St.<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:14.0pt;font-family:"Calibri","sans-serif";color:#1F497D">Cambridge, MA 02138<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:14.0pt;font-family:"Calibri","sans-serif";color:#1F497D">617- 496- 9816<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:14.0pt;font-family:"Calibri","sans-serif";color:#1F497D">spaolini@cns.fas.harvard.edu<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:14.0pt;font-family:"Calibri","sans-serif";color:#1F497D">www.cns.fas.harvard.edu</span><span style="font-size:14.0pt;font-family:"Calibri","sans-serif";color:#1F497D"><o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D"><o:p> </o:p></span></p>
<p class="MsoNormal"><b><span style="font-size:10.0pt;font-family:"Tahoma","sans-serif"">From:</span></b><span style="font-size:10.0pt;font-family:"Tahoma","sans-serif""> labnetwork-bounces@mtl.mit.edu [mailto:labnetwork-bounces@mtl.mit.edu]
<b>On Behalf Of </b>Johnson, Patrick<br>
<b>Sent:</b> Thursday, January 11, 2018 9:44 AM<br>
<b>To:</b> labnetwork@mtl.mit.edu<br>
<b>Subject:</b> [labnetwork] Harkris Chiller Quality issues<o:p></o:p></span></p>
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<p class="MsoNormal">Good Morning All, We purchased all new Haskris chillers both large and small in late 2014 and since the start up in early 2015 have had numerous failures, all of my pumps started to leak at the input shaft seal, replacement pumps form
Haskris have started to leak as well. <o:p></o:p></p>
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<p class="MsoNormal">The most problematic has been the large R0300 Haskris air cooled and now one of the compressors just failed and we have to get repaired out of our pocket. I'm interested to know if anyone else has had similar issues with there Haskris
chillers. <o:p></o:p></p>
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<p class="MsoNormal">Thanks Patrick<o:p></o:p></p>
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<p class="MsoNormal"><b><i>Patrick Johnson</i></b><o:p></o:p></p>
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<p class="MsoNormal"><i>George Washington University</i><o:p></o:p></p>
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<p class="MsoNormal"><i>Nano Fabrication Lab Manager </i><o:p></o:p></p>
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<p class="MsoNormal"><i>Science and Engineering Hall</i><o:p></o:p></p>
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<p class="MsoNormal"><i>800 NW 22nd Street Rm-B2815</i><o:p></o:p></p>
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<p class="MsoNormal"><i>Washington D.C. 20052</i><o:p></o:p></p>
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<p class="MsoNormal"><i>Cell 703 258 2465</i><o:p></o:p></p>
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<p class="MsoNormal"><i>Desk 202 994 2346</i><o:p></o:p></p>
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