Discuss the stacked arrangement with the booking team first. A dryer above the washer affects safe access and may require appropriate handling equipment or another person.
Understanding this situation
Stacking kits and attachments differ, and the upper appliance can be heavy or awkward. Removing it casually risks injury and damage to both machines. An apparently removable shelf or bracket may be part of the stabilising arrangement.
A useful next step
Provide the models and a clear accessible description of how the appliances are fitted. Do not loosen the kit or attempt a solo lift to make the visit easier. Agree practical access arrangements before any work is scheduled.
Manuals and supporting guidance
Model-specific instructions take priority. These references support the practical principles discussed here; they do not diagnose your appliance.