13
5. Adjustable condenser (Fig. 9)
The condenser (5) is moved up or down via turning the height
adjustment knob (1). For centering, the condenser centering
screws (2) are used. The condenser can be taken down easily
if one unscrews the condenser holding screw (3). The place
for a filter plate is on the filter seat on the field diaphragm (6).
6. Power switch and adjustable brightness (Fig. 1)
Turn on the power switch (6). Adjust the dimmer (7) until the
image can be observed comfortably.
7. Aperture diaphragm (Fig. 9)
The aperture diaphragm adjustment lever (4) can be turned in
order to open or close the aperture diaphragm. Remove an
eyepiece and watch through the eyepiece tube. You will see
the bright aperture diaphragm image in the dark objective
pupil. For centering, the condenser centering screws (2) are
used when the aperture diaphragm image is eccentric with
the objective pupil. Turn the aperture diaphragm adjustment
lever (4) for getting a good resolution and contrast perception.
Usually, the diameter of the aperture diaphragm image, which
has to be adjusted, is 70-80 percent of the objective pupil.
VI. MAINTENANCE
1. Cleaning the frame and the stage
Disconnect the plug from mains socket before cleaning. Clean
the frame and the stage with a soft cloth moistened with a
mild detergent solution. Be sure that the instrument is dry
before using.
2. Cleaning optical parts
The eyepieces and the objectives of the microscope are
coated. They should not be wiped because dry dirt or dust
may scratch the coating. It is best to remove the parts to be
cleaned from the frame prior to cleaning. Always blow loose
dust away first. Use lens tissue of good quality moistened
with a lens cleaner or a small amount of alcohol; then
wipe the surface clean with a lens tissue. Solvents such as
xylene should NOT be used as cleaner.
3. Do not disassemble objective lenses!
4. Cleaning the 100x oil immersion lens
The immersion oil should be removed from the lens at the
end of each workday using a lens tissue moistened with a
lens cleaner or a small amount of alcohol.
5. Being not used
Cover the microscope with the dust protective cover and
place it there, where it is dry without mold. We suggest the
storage of all objectives and eyepieces in a closed container
with drying agent.
VII. EC DECLARATION OF CONFORMITY
Bresser GmbH has issued a „Declaration of Conformity“ in
accordance with applicable guidelines and corresponding
standards. The full text of the EU declaration of conformity is
available at the following internet address:
www.bresser.de/download/5770500/CE/5770500_CE.pdf
VIII: WARRANTY & SERVICE
You can consult the full guarantee terms as well as information
on extending the guarantee period and details of our services
at www.bresser.de/warranty_terms.
IX: DISPOSAL
Dispose of the packaging materials properly, accor-
ding to their type (paper, cardboard, etc). Contact
your local waste disposal service or environmental
authority for information on the proper disposal.
Do not dispose of electronic devices in the household garbage!
As per the Directive 2002/96/EC of the European Parliament on
waste electrical and electronic equipment and its adaptation
into German law, used electronic devices must be collected
separately and recycled in an environmentally friendly manner.
Empty old batteries must be disposed of at battery collection
points by the consumer. You can find out more information
about the disposal of devices or batteries produced after
01.06.2006 from your local waste disposal service or environ-
mental authority.
Please take the current legal regulations into account when
disposing of your device. You can get more information on
the proper disposal from your local waste disposal service or
environmental authority.