Spanish to English Tech/Engineering Chemistry; Chem Sci/Eng Fluidized bed dryer for powder/granulated material

This is an instruction manual for the computer operations screens used to control a granulating mill connected to a fluidized bed dryer connected to a sifting machine and paste mixer. My question is:

Would the product passing between these devices be discharged and charged, or unloaded and loaded?

Parts of the original document use the English charge and discharge (the rest being in Spanish "carga" and "descarga"). However, these words don't sound correct to me. Has anyone any advice on what would the better terminology to use?

An example of the original reads:
"Durante esta fase descargaremos la granuladora, pasando a través de la tamizadora Wet Mill daremos un tamaño determinado al producto y finalmente depositaremos dicho producto en el interior de recipiente del secador."

Thank you.