Software Options and Configuration5-14 COBE ® Spectra™ Apheresis System • Essentials GuideThe VALVE KeyPress VALVE to access software options that allow you move individualvalves. After you make a selection, the screen appears for 30 secondsunless you press VALVE again or press CLEAR. For descriptions of thefive valves and explanations of their functions, see “Front Panel” onpage 2-4 and “Valves” on page 2-5.The valve software options are described below. Use the valve selectionscreen to select which valve to move. Then, you may choose how toposition the valve. The Enter LED flashes for all of these screens,indicating that you can press ENTER to remove the screen.To return to the first valve screen from any screen, press CLEAR. Toaccept the current valve setting, press ENTER.Valve Selection ScreenPress VALVE. The valve selection screen appears:Press the number of the valve you want to move, or to select “All valves,”press 6.Return Line ValvePress VALVE, then press 1 to select “Return.” The following screenappears:The screen displays “now Open” or “now Closed,” depending on thecurrent position of the return line valve.• To close the return line valve, press 1.• To open the return line valve, press 2.RBC Line ValvePress VALVE, then press 2 to select “RBC.” The following screenappears:The screen displays “now Open” or “now Closed,” depending on thecurrent position of the RBC line valve.• To close the RBC line valve, press 1.• To open the RBC line valve, press 2.1=Return, 2=RBC, 3=Waste, 4=Collect,5=Plasma, 6=All valves.Return Line Valve (now ________):1=Close, 2=Open.RBC Line Valve (now ________):1=Close, 2=Open.