14. Maintenance procedures
14.5 Cleaning the lens
To minimize the possibility of damag e to optical co atings, or scratches to lens surfaces follow the cleaning
procedure as described here precisely.
Necessary tools
• Compressed air.
• Clean Tora ysee® cloth or an y micr o fiber lens c leaning cloth.
• Clean cotton cloth.
Necessary parts
Lens c leaner (e.g. Carl Zeiss lens cleaner or Purasol® or any water-based lens cleaner)
How to clean the lens?
1. Blow off dust with clean compr essed air (or pressurized air cans
4
).
2. Clean with lens c leaner together with a clean lens cleaning cloth to remov e t he dus t and contam ination. Use bi
g wipes in one
single direc tion.
Warning: Do not wipe back and forwards across the lens surface as this tends to grind dirt into the coating.
3. Use a dry lens cleaning cloth to remove left liquid or stripes. Polish with small circles.
4. If there ar e still fingerprints on the surface, wipe them off w ith lens cleaner together with a clean lens cleaning cloth. Polish again
with a dry one.
If smears occur when cleaning l enses, rep lace the cloth. S mears are the firstindicationofadirtycloth.
4. Pressurized air cans are not efficient if there is too much dust on the surface, the pressure is too low
128 R5906847 DP2K SLP SERIES 02/06/2017
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