Barco R9001070 owner manual Appendix D Lens Cleaning Procedure

Appendix D : Lens Cleaning Procedure

Lens Cleaning Procedure

Cleaning procedure for the SD lens

To minimize the possibility of damaging the optical coating or scratch- ing exposed lens surfaces, we have developed recommendations for cleaning lenses. FIRST, we recommend you try to remove any material from the lens by blowing it off with deionized air or lightly brushing it with a soft, camel's hair brush.

Plastic lens with multilayer coatings & all glass lens elements.

1.DO NOT spray any type of fluid directly on the lens surface.

2.DO NOT use any dry material to clean the surface (dry rag, tissue, etc.)

3.Use a commercial liquid window cleaner. DO NOT use an aerosol. Other cleaning agents, such as laboratory-grade ac- etone or a 70-30 mixture of ethyl ether and ethyl alcohol may also be used. If you are not sure of the cleaning agent, experiment with a small area of the lens first.

4.Use a soft cotton cloth (cotton diapers laundered several times to remove sizing) or any soft facial tissue (Charmin, Softweve, etc.).

5.When using window cleaner, moisten the cloth or tissue and lightly wipe the surface. Then lightly dry with a new tissue.

6.When using acetone or ethyl ether mixture, proceed as follows : Fold the cloth or tissue several times to form a pad. Soak the folded end of the pad in the acetone. Starting at the diameter opposite you, immediately wipe the coated lens, with very little pressure, toward you in a straight line and off the lens. Do not stop with the tissue

on the lens. Wipe at a speed that is equal to the evaporation rate. This is very important to prevent streaking and spotting. Start your wiping at one side of the lens and, with successive wipes, move to the other side. Turn the pad over for each wipe, then inside out. Do not make more than one wipe per clean area of pad. Be careful of the painted edge, since acetone will soften it.

It is recommended to use a TorayseeTM cloth.

Proceed as follows :

*Always wipe lenses in a single direction. Do not wipe back and forth across the lens surface as this tends to grind dirt into the coating.

* Do not leave cleaning cloth in either an open room or lab coat pocket, as doing so can contaminate the cloth.

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

*Do not use fabric softener when washing the cleaning cloth or softener sheets when drying the cloth.

*Do not use liquid cleaners on the cloth as doing so will contaminate the cloth.

Order number TorayseeTM cloth : R379058.

5975696BARCODATA2100140798 D-1