When to inspect and replace

• Initial Period: Inspect every 100-200 hours of use, or monthly. In dusty environments, it is advised to do this even every 50 hours.
• Ongoing: If dust buildup is minimal, extend the interval between checks. Always inspect sooner if you notice overheating, dimming, or increased fan noise.
• Check the dust filter sooner if you notice overheating, dimming, or loud fans.
• Clean the dust filter if you see a light layer of dust. If dust is thick, embedded, or the dust filter remains dirty after cleaning, replace it.

• Replace the dust filter if you see:

  • Discoloration: Original color is lost (e.g., white turns brown/black, black turns grey).
  • Physical damage: Tears, rips, warped frame, or holes.
  • Caked-on dirt: Dust remains after cleaning, or filter looks opaque when held to light.
  • Mold or residue: Any mold, sticky, oily, or unusual contaminants.

How to inspect

1. Power down: Turn off and unplug the projector before removing the dust filter.
2. Remove: For instructions see procedure “Replacing the dust filter”.
3. Inspect: Use bright light to check both sides for dust, discoloration, or damage.
4. Clean: Use a vacuum or compressed air. If the dust filter remains dirty or airflow is not restored, replace it.