Technical data

Additional Cleaning Information 6
Cleaning Procedures 45
Procedure for Stubborn Dirt
Use this procedure when there is greasy dirt on the lens.
Ensure that your liquid soap has no abrasive properties or per-
fume in it. You should also avoid normal washing-up liquid, as
it can cover your device in an iridescent film after it has been
air-dried.
Some lenses and mirrors also have a special coating, which
may be sensitive to mechanical stress, or to fat and liquids. For
this reason we recommend you do not touch them.
If you are not sure how sensitive your device is to clea-ning,
please contact the manufacturer or your sales distri-butor.
1 Moisten the lens or the mirror with water.
2 Put a little liquid soap on the surface and gently spreadthe
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.
4 Take a new, dry soft tissue and remove the water, by rubbing
gently over the surface using a straight movement.
5 Blow away remaining lint with compressed air.
Alternative Procedure A
To clean lenses that are extremely sensitive to mechani cal
stress or pressure you can also use an optical clean polymer
film. This procedure is time consuming, but you avoid scratch-
ing or destroying the surface.
1 Put the film on the surface and wait at least 30 minutes to
make sure that the film has had enough time to dry.
2 Remove the film and any dirt with special adhesive tapes.
CAUTIONCAUTION
Only use water if you are sure that there is no other way of
cleaning your optical device without causing corrosion or dam-
age. Do not use hot water, as this may cause mechanical
stress, which can damage your optical device.
cleaning.book Page 45 Wednesday, May 22, 2002 5:16 PM