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7. CARE AND MAINTENANCE
7.1 Lenses and Filters
To clean lens surfaces or filters, first remove dust using an air blower. If dust still exists, use a soft/
clean brush or gauze.
A soft gauze or lens tissue lightly moistened with the mixture of alcohol and ether ( ratio:alcohol: 3
and ether: 7) should only be used to remove grease or fingerprints.
Use the mixture of alcohol and ether only to remove immersion oil from objective lenses.
Because the mixture of alcohol and ether is highly flammable, be careful handling around
open
flame.
Do not use same area of gauze or lens tissue to wipe more than once.
7.2 Cleaning of Painted or Plastic Components
Do not use organic solvents (thinners, alcohol, ether, etc.). the move could result in discolouration
or degrading the paint.
For stubborn dirt, moisten a piece of gauze with diluted detergent and wipe clean.
For plastic components, only moisten a piece of gauze with water and wipe clean.
7.3 When Not in Use
When not in use, cover the instrument with vinyl dust cover and store in a place low in humidity
where mould is not likely to form.
Store the objectives, eyepieces and filters in a container or desiccator with drying agent.
Note:
If the operations violate the instructions specified by the manufacturer, the warranty listed in the
guarantee terms may be impaired.