Zig-zag motion (X)
Spiral motion ( )
Your microscope had been engineered for a long and safe operational life with the least amount of main-
tenance required. In general, routine maintenance is limited to keeping the microscope working parts
lubricated and optics clean. Always cover the microscope with the provided dust cover when not in use.
Optical Cleaning
1. The objective have been adjusted for a tight fit to prevent any damage during transportation. To remove
an objective, rotate it counterclockwise while gripping it with a rubber sheet, etc. to avoid any slip page.
2. To clean the lens surfaces, remove dust using a soft brush or gauze (compressed air dust cans are
ideal). For removing finger marks or grease, soft cotton cloth or lens tissue lightly moistened
with cleaning solution ( 85% petroleum ether and 15% isopeopanol) should be used. For cleaning the
optics, use Meathanol. Observe sufficient caution in handling Methanol. Place the Objective and/ or
eyepieces on a dust free surfaces (e.g. aluminum foil). All other optical components to be cleaned should
be as accessible as possible.
3. Blow all loose dust particles away with a dust blower.
4. Remove all water-soluble dirt with distilled water. If this is unsuccessful repeat using a solution of
diluted hand soap liquid. Remove any remaining residue with a dry cotton swab.
5. To remove oil, use a solution of diluted hand-soap liquid initially. If this does not produce a satisfac-
tory result, repeat the cleaning using a solvent (Optical Cleaning Solution 85% petroleum ether and
15% isopropanol).
6. Grease must always be removed using a solvent.
7. Cleaning is achieved by using a spiral motion from the center to the rim. Never wipe using zig-zag
movements as this will only spread the dirt. With larger optical surfaces (e.g. tube lenses) the spiral
motion starts initially at the rim before to the middle and is only then followed by a center to rim
cleaning motion. Normally several spiral wipes are recommended.
We recommend pure, volatile petroleum ether or Optical Cleaning Solution as explained in point 3 above.
Wipe using a spiral movement. Do not use a zig-zag motion!
Cleaning of painted surfaces
Avoid the use of any organic solvent (e.g. thinner, xylene, ether, alcohol etc.) for cleaning of painted
surfaces of the instrument. Painted surfaces can be cleaned with a very lightly moistened micro fiber
cloth. Loose dust and dirt can be removed using a brush of soft hair used exclusively for this purpose.
Lx 400
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CARE & MAINTENANCE
9126000-795
Lx 400
Issue 1.5
Printed on April,2019
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