Completed monthly check of the dust monitor vacuum pumps. CS and End-X pumps, temperatures, and pressures are normal. The pump at End-Y failed on 05/12/17. I have swapped in the backup pump, while rebuilding the primary pump. 

   I have opened up the air bleed on all pumps to allow for greater cooling during the summer months. Pumps are now running at 15 in/Hg.  

Closing FAMIS #7513