For recurring dust, examine surface, cleaning step and environment together.
Observation. Record container, area, date, dust appearance and last cleaning.
Conditions
| Factor | Information |
|---|---|
| Environment | Reading, device and time |
| Friction | Packaging/contact points |
| Surface | Model, material document, damage |
| Cleaning | Agent, method and date |
Comparison
After cleaning, recheck and photograph the same point under the same light.
Suitable method
Choose cleaners from manufacturer and site hygiene instructions.
Do not apply unapproved oil, polish or antistatic products.
Assess residue under the product owner's procedure.
Find the source
Inspect racks, packaging, airflow and nearby processes.
Report contamination risk if food is exposed.
Check exterior cleanliness for packaged goods too.
Intervention
Trial humidity or filter changes with site engineering.
Do not treat one reading as seasonal conditions.
Surface fit
Inspect scratches/recesses and match model to its document.
Do not infer material or antistatic properties from appearance.
Recheck
Compare the same place and method before and after changes.
If complaints persist, review cleaning and environment records.
Do not conclude static is the cause without testing.
Record method and result on a dated form.
Verify food-contact needs from product and procedure.
Do not assume one setting will eliminate dust.
