HDX series - Cleaning the lens - User and Installation manual (HTML)

16.2 Cleaning the lens

Note: To minimize the possibility of damage to optical coatings, or scratches to lens surfaces follow the cleaning procedure as described here precisely.

Prerequisites

Switch off the projector and wait at least 30 minutes to let everything cool down.

Required tools

Compressed air
Clean cotton cloth
Clean micro fiber lens cleaning cloth (e.g. Toraysee® cloth(s))
Lens cleaner (e.g. Zeiss lens cleaner, Purosol® or any water based lens cleaner)

How to clean the lens?

Blow off dust with clean compressed air (or pressurized air cans^[6]) .
Clean with lens cleaner together with a clean lens cleaning cloth to remove the dust and contamination. Use big wipes in one single direction.
Warning: Do not wipe back and forwards across the lens surface as this tends to grind dirt into the coating.
Use a dry lens cleaning cloth to remove left liquid or stripes. Polish with small circles.
If there are still fingerprints on the surface, wipe them off with lens cleaner together with a clean lens cleaning cloth. Polish again with a dry one.

Tip: If smears occur when cleaning lenses, replace the cloth. Smears are the first indication of a dirty cloth.

[6] Pressurized air cans are not efficient if there is too much dust on the surface, the pressure is too low