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Chapter 5 Maintenance and Storage
5.1 Cleaning
Clean or disinfect the lenses and other components according to the following
instructions
.
Cleaning tools
Blower
Soft brush
Soft cotton cloth, lens cleaning tissue, gauze, etc.
Absolute alcohol (ethyl alcohol or methyl alcohol), medical alcohol
Petroleum benzene (only for wiping immersion oil)
CAUTION
Petroleum benzene and absolute alcohol used for cleaning are highly flammable. Handle
them with due care, and keep them away from fire or sparks and when turning the power
switch on and off.
When handing petroleum benzene or absolute alcohol, always follow the instructions
provided by the manufacturer.
Do not use organic solvents (such as alcohol, ether, and thinner) when cleaning painted,
plastic, or printed parts of this product. Using organic solvents might result in discoloration
or cause printed text to fade.
Use petroleum benzene only when wiping off immersion oil from objectives. Do not use
petroleum benzene to wipe the prism surface of the eyepiece tube or filters.
5.1.1 Cleaning the Lenses
Keep the lenses free of dust, fingerprints, and other dirt. Any dirt on lenses and
filters will degrade the image. If the lenses become dirty, clean them according
to the following procedure.
▲
Cleaning off minor dirt (such as dust)
(1)
Use a blower or similar tool to blow off dust.
(2)
If the above method does not work, dust off using a soft brush, or gently
wipe off with a gauze.
▲
Cleaning off heavy dirt (such as fingerprints or oil stains)
Wipe off dirt using a soft clean cotton cloth, lens cleaning tissue, or gauze
moistened with a small amount of absolute alcohol. (ethyl alcohol or methyl
alcohol).
Tips for wiping
Do not wipe the lens surface using the same portion of a cloth or tissue more
than once.
5.1.2 Cleaning Parts other than Lenses
▲
Cleaning off minor dirt (such as dust)
Wipe off using a silicone cloth.
▲
Cleaning off heavy dirt (such as fingerprints or oil stains)
Gently wipe off using a gauze moistened with a small amount of a diluted
neutral detergent solution.
