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<p class="MsoNormal">Quarterly PM (planned maintenance) on the PRB’s four air handler units and six connected exhaust fans will be conducted by FOD on Saturday, April 5<sup>th</sup> 2014.<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">This is a scheduling change point from the planned date of Wednesday April 9<sup>th</sup> and is made to align quarterly PM work with previously planned work to replace fan pulleys on AHU-1 and AHU-2.<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">Maintenance is scheduled to start at 7:00 AM and is planned to be completed by no later than 3:00 PM.<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">Because the lab side air handlers and connected exhaust fans will be shut down, fume hood operations should be suspended for the full maintenance period.<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">Occupants are reminded that although the building will remain open and accessible, air flows and other air-related building processes will be impacted throughout the day as maintenance is done.<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">In addition to normal PM activities, fan pulleys will be replaced with new sized pulleys designed to reduce overall system static pressure on both AHU-1 and AHU2.<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">Individual lab pressure controls are expected to remain unchanged and automatically compensate for the system static pressure change. Occupants should report instances where lab pressure may need adjusted.<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">Please take planned action to prepare for this event.<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">Key Summary Points:<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">- Air handler / Exhaust Fan shut down Wednesday, January 8th.<o:p></o:p></p>
<p class="MsoNormal">- No building closure or evacuation<o:p></o:p></p>
<p class="MsoNormal">- Suspend fume hood operations<o:p></o:p></p>
<p class="MsoNormal">- Building air flow and air-related processes will be interrupted throughout the day<o:p></o:p></p>
<p class="MsoNormal">- Performance modification – reduce static pressure by replacing fan pulley on AHU-1 and AHU-2<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">For long range planning purposes, the 2014 quarterly maintenance dates are planned as follows:<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">Q1-2014 = January 9th Wednesday - Complete<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">Q2-2014 = April 5<sup>th</sup> Saturday (changed from April 9<sup>th</sup>) - Announced<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">Q3-2014 = July 9th Wednesday - Planned<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">Q4-2014 = October 8th Wednesday – Planned<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">This message is Notice 1 of 3 of such alerts<o:p></o:p></p>
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