What changes between products?
Particle size, fat range and frozen-block size change plate opening, knife set and hopper loading rhythm. A recipe that runs as fresh trim at 2 °C cannot reuse the frozen-block trial without a new sample and a restated kg/h basis.
What must be cleaned or replaced?
Ask which product-contact parts unbolt for inspection: worm, plates, knives, bone-separation inserts and hopper lids. Heavy plate handling and storage space belong on the quotation if operators must swap sets between recipes.
How is the first good output verified?
Record product temperature before and after the demonstration, retained texture, and usable yield after the named plate. Throughput claims without the trial feed and plate opening are not comparable.