Display Screen or Portion Thereof with a Graphical User Interface for a Dual-chamber Washer Disinfector System

FIG. 1 is a front view of the display screen or portion thereof with a graphical user interface for a dual-chamber washer disinfector system in a first sequence of an animation according to claimed design;

FIG. 2 is a front view of the display screen or portion thereof with a graphical user interface for a dual-chamber washer disinfector system in a second sequence of the animation of FIG. 1 ;

FIG. 3 is a front view of the display screen or portion thereof with a graphical user interface for a dual-chamber washer disinfector system in a third sequence of the animation of FIG. 1 ; and,

FIG. 4 is a front view of the display screen or portion thereof with a graphical user interface for a dual-chamber washer disinfector system in a fourth sequence of the animation of FIG. 1 .

The dot-dash-dot broken lines illustrate a display screen, which is the environment of the design, and which forms no part of the claimed design. The remaining even-length broken lines, which make up portions of the graphical user interface, form no part of the claimed design.

The appearance of the figures sequentially transitions between FIGS. 1 - 4 . The process or period in which one image transitions to another forms no part of the claimed design.