Agilent Technologies HP E5574A User Manual page 236

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Appendix E. Cleaning Procedure
Cleaning Procedures
4 Blow away any remaining lint with compressed air.
Cleaning Large Area Lenses and Mirrors
Some mirrors, as those from a monochromator, are very soft and sensitive.
Therefore, never touch them and do not use cleaning tools such as
compressed air or polymer film.
Some lenses have special coatings that are sensitive to solvents, grease,
liquid and mechanical abrasion. Take extra care when cleaning lenses with
these coatings.
Lens assemblies consisting of several lenses are not normally sealed.
Therefore, use as little liquid as possible, as it can get between the lenses and
in doing so can change the properties of projection.
Preferred Procedure
1 Blow away any dust or dirt with compressed air.
Procedure for Stubborn Dirt
Use this procedure particularly when there is greasy dirt on the
lens:
Only use water if you are sure that your device does not corrode.
Do not use hot water as this can lead to mechanical stress, which can
damage your device.
Make sure that your liquid soap has no abrasive properties or perfume in it,
because they can scratch and damage your device.
Do not use normal washing-up liquid as sometimes an iridescent film
remains.
1 Moisten the lens or the mirror with water.
2 Put a little liquid soap on the surface and gently spread the liquid
over the whole area.
3 Wash off the emulsion with water, being careful to remove it all,
as any remaining streaks can impair measurement accuracy.
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