You should perform a daily cleaning routine on a Pepsi Spire Fountain. The video below will show you how to do this:

Or if you prefer not to watch a video, these are the steps:

• Remove the nozzle and diffuser by turning them counter clockwise and pulling them down
• Separate each nozzle from its diffuser then brush and rinse all parts with warm water
• Soak the nozzle and diffuser in sanitizing solution for 60-90 seconds
• Remove the nozzles and diffusers from the sanitizing solution and allow to air dry on a clean surface
• Except the screen, wipe the surfaces of the fountain machine, valves, levers, and drip tray with disinfecting wipes
• Reassemble the diffuser and nozzle with the white rubber seal facing up and with the notches matching up with the tabs and re-install the nozzle assembly
• Press the pour button to flush out any residual cleaning solution into a cup or drain