Caution: Before cleaning the device, be sure to turn off the power switch.
Clean the light glass at scheduled intervals (the intervals depend on the environmental contamination).
Remove dust using compressed air, and clean solid dirt with a soft cloth and glass cleaner.
There is no need to replace or clean the filter pad since there is no exchange between the internal and external air.
Check for dust contamination on the heat sink at scheduled intervals. Clean the dust with compressed air.
Periodically check the airflow for external cooling of the heat sink. The external airflow may be blocked or restricted.