Most of the makes we work on do one or the other. This one does both, and it does them in the same room: a pair of refrigeration columns down one wall and a professional range with an open burner down the other. A sealed system is measured in pressures and currents; an open burner is diagnosed by taking it apart in your hand. Different tools, different parts, different figures.
Which is why the appliance is named when the visit is booked rather than after. It decides what comes on the van, and it is the difference between one appointment and two.