What needs to be clarified
Locate the connection that changes performance, and assess the combined effects of airflow restrictions, seals, filter, operating mode and battery condition under comparable test conditions.
Materials to prepare
- Vacuum with its wand, head and used filter
- Instructions and previous maintenance records
- Video of pulsing showing operating mode and battery charge
What to compare
Record dirt and joint condition before intervention. Compare body, wand and head sequentially with the same mode and controlled charge; select measurements appropriate to the model. Check passages, filter seating and seals, then compare symptom changes after separately documented cleaning of each accessible airflow section.
Possible outcome of the analysis
The opinion may associate a reproducible symptom with a configuration or airflow section, describe observed faults and justify further examination of the motor or power supply.
Limits of the conclusions
Running without a head does not establish performance under load. Prior cleaning removes evidence; comparisons using different modes or charge levels may produce misleading results.