====== Closed cycle water ======
Water-cooled equipment in Wngr 487 (diffusion pump on evaporator) and Wngr 481 (Hall magnet) is cooled by a closed cycle system that is run from a pump system located on the upper roof of Weniger Hall.  The pump system is supplied by [[http://www.gdchillers.com/|G & D Chillers]]. 

The equipment in Wngr 489 and 481 is plumbed in parallel with the source.  Each of the rooms has 2-3 parallel lines in the room. Usually only one is used.  The town water supply is plumbed into the closed-cycle system in Wngr 489.  It is used to refill the system if the supply becomes low.  **It should be checked monthly and the check recorded on the log on the door of Weniger 489**.  Issues concerning the chiller should be logged in the blue manual notebook (labeled "G&D Chiller) that is located in Weniger 489 in the bookshelf.  The location of the key to the roof can be obtained from Janet.

There is a manual of sorts located in Wngr 487, in the small bookshelf near the door. It's a blue binder, I think.

Steve Allen (7-7645) of Facilities Services has been extremely helpful in maintaining the system, including adjusting the glycol mix. (2011->)

Responsible student:
  * James Haggerty (Summer 2014 ->)
  * Matt Oostman (Nov 2011 ->)
  * Matt Leyden (->2011)
  * Robert Kykyneshi (->2007)