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Chapter 5 Maintenance and Storage

Chapter 5

Maintenance and Storage

Cleaning

Follow these procedures when cleaning or decontaminating lenses or other parts.

■ Tools used for cleaning

・Blower

・Soft brush

・Soft cotton cloth, lens tissue, or gauze etc.

・Absolute alcohol (ethyl or methyl alcohol), medicinal alcohol

・Petroleum benzine (used only for cleaning immersion oil)

CAUTION

• Petroleum benzine and absolute alcohol used for cleaning are highly flammable. Be careful when handling these

materials, particularly around open flames or when turning the power switch on or off.

• Follow the instructions provided by the manufacturer when using petroleum benzine or absolute alcohol.

• When cleaning the product, do not use organic solvents (alcohol, ether, thinner, etc.) for coated, plastic, or printed

areas. It will result in discoloration or peeling of printed characters.

• Petroleum benzine should be used only to wipe off immersion oil from the objective, and never to clean the entrance

lens at the bottom of the eyepiece tube, prism surface of the eyepiece tube, or the filters.

2.1

Cleaning Lenses

Keep the lens free of dust, fingerprints, etc. If there is contamination on the lenses or filters, image quality decreases. If

any of the lenses

become dirty, clean them by following the procedure given below.

■ Cleaning light dirt (such as dust)

(1) Blow dust off using an air blower.

(2) If this is insufficient, brush away dust with a soft brush or wipe away gently with a piece of gauze.

■ Cleaning tough dirt (such as fingerprint or grease)

Moisten lightly a piece of soft, clean cotton cloth, lens tissue, or gauze with absolute alcohol (ethyl or methyl alcohol)

and wipe the dirt off.

Tips on wiping dirt

Do not reuse cotton cloth, lens tissue, or gauze that have already been used.

2.2

Cleaning Parts Other than Lenses

■ Cleaning light dirt (such as dust)

Wipe with a silicon cloth.

■ Cleaning tough dirt (such as fingerprint or grease)

Dampen a piece of gauze with neutral detergent and wipe the dirt gently.

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