Checked the dust monitor vacuum pumps - Tuesday 03/24/20

   End-X - Slight tweak in the air bypass valve to adjust vacuum pressure. Filter is clean. All looks and sound normal.
   End-Y - Slight tweak in the air bypass valve to adjust vacuum pressure. Filter is clean. All looks and sounds normal. 
   Corner Station - Air bypass valve fully is closed (No additional air to set vacuum pressure). However, at 16.5inHg, the the vacuum pressure is below normal operating pressure of 18.0inHg. This would indicate a leak somewhere in the LVEA or the pump has an internal problem. When the pump was overhauled, not that long ago, there were no signs of internal damage noted. The pump passed its post rebuild pressure checks. 
   Given all the work going on in the LVEA at this time, the possibility of damage to one of the vacuum lines is not out of the question. Will do an inspection of the LVEA vacuum lines as soon as I can get into the LVEA. 

Closing FAMIS #13009