So, today a hospital engineering dept. tells me about a meeting they had with the anesthesia dept.  / This meeting was to review the need to turn off or disconnect the WAGD system when not in use, to reduce the work and energy cost on the vacuum pumps. / The anesthesia dept. at this point, tells the engineering dept. they can not do this.  BECAUSE the WAGD system has to stay on to keep the anesthesia machine sterile !

Any Input would help.