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6 Care and maintenance
Before cleaning and maintenance
work, remember to disconnect from
the mains!
Dust protection
Protect the microscope and peripherals from
dust by putting on the flexible dust cover after
each work session. Dust and loose particles of
dirt can be removed with a soft brush or lint-free
cotton cloth.
Solvents
Obstinate dirt can be removed with a clean cot-
ton cloth moistened with any ordinary hydrous
solution, benzine or alcohol. Do not use acetone,
xylol or nitro dilutions. Cleaning agents of un-
known composition should be tested on an
inconspicuous part of the microscope. Painted or
plastic surfaces must not be tarnished or etched.
Acids, alkaline solutions
Particular care should be taken when working
with acids or other aggressive chemicals.
Always avoid direct contact between such che-
micals and the optics or stands. Thorough clean-
ing after use is strongly recommended. Keep the
microscope optics absolutely clean.
Dust/optics
Remove any dust from glass surfaces with a fine,
dry, grease-free artists’ hair brush, or by blowing
with a bellows ball or by vacuum suction. Any
remaining dirt can be removed with a clean cloth
moistened with distilled water. Failing this, use
pure alcohol, chloroform or benzine.
Oil (see p. 11)
First wipe off immersion oil with a clean cotton
cloth, then wipe over several times with ethyl
alcohol.
Fibre and dust residue can cause disturbing
background fluorescence in fluroescence
microscopy.
Objectives must not be opened for cleaning. Only
the front lens can be cleaned in the ways des-
cribed above and the upper lens by blowing dust
off with a bellows ball.
All Leica instruments are manufactured and
tested with extreme care. If you do have cause
for complaint, however, please do not try to
repair the instruments and their accessories
yourself. Contact your national agency or our
central servicing department, the Technical Ser-
vice in Wetzlar, direct. Postal address:
Leica Microsystems Wetzlar GmbH
Abt. Technischer Service
Postfach 20 40
D-35530 Wetzlar
Tel.: (0) 6441 - 29 28 49
Fax: (0) 6441 - 29 22 66