Leave the correct operating manual, model reference, control and isolation information, and relevant repair records. Clearly identify any unresolved fault or instruction that the appliance must remain unused.
What the observation tells you
A new occupant may not recognise a batch-feed stopper, an air button or a separate control accessory. Keep the required accessories with the appliance and explain their purpose through the manufacturer's instructions. Do not leave an unsafe unit apparently ready for use simply because its control is off.
A useful next step
Where a service or safety-notice case remains open, include the reference and contact route. A factual handover prevents operating assumptions and preserves the history needed for a proper assessment.
Manuals and supporting guidance
Model-specific instructions take priority. These references support the practical principles discussed here; they do not diagnose your appliance.