Storage; Maintenance And Cleaning - KERN OBE 112 User Instructions

1.3 Storage

You should ensure that the device is not exposed to direct sunlight, temperatures
which are too high or too low, vibrations, dust or a high level of humidity. The ideal
temperature range is between 0 and 40°C and a relative humidity of 85% should not
be exceeded. The device should always be located on a rigid, smooth, horizontal
surface.
When the microscope is not being used, you should fit the lens cap and cover the
microscope with the enclosed dust protective cover. If the eyepieces are being stored
separately, the protective caps must be fitted to the lens barrels. In most cases, if
dust and dirt gets inside the optical unit of a microscope this can cause irreversible
errors or damage. The best way to store accessories which consist of optical
elements, such as, for example, eyepieces and lenses, is in a dry box with desiccant.

1.4 Maintenance and cleaning

In any event, the device must be kept clean and dusted regularly. If any moisture
should be occur, before you wipe down the device you must ensure that the mains
power is switched off.
When glass components become dirty, the best way to clean them is to wipe them
gently with a lint-free cloth.
To wipe oil stains or finger prints off the lens surface, moisten the special lint free
cleaning cloth with a mixture of ether and alcohol (70 / 30 ratio) and use this to clean
the lens.
You must be careful when handling ether and alcohol, as these are highly flammable
substances. You must therefore keep it away from naked flames and electrical
devices which can be switched on and off, and only use it in well-ventilated rooms.
However organic solutions of this type should not be used to clean other components
of the device. This could lead to damage to the paint finish. To do this, it is sufficient
to use a neutral cleaning product.
You could also use the following cleaning products to clean the optical components:
 Special cleaner for optical lenses
 Special optical cleaning cloths
 Bellows
 Brush
When handled correctly and checked regularly, the microscope should give many
years of efficient service. Should repairs still be necessary, please contact your
KERN dealer or our Technical Department.
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