Maintenance And Storage - Bresser ERUDIT Basic Bedienungsanleitung

you hear a ‚click'. Starting at this point, the brightness can be
adjusted. Always use a light intensity that allows for a good
illumination of the object.
NOTE!
Do not operate the microscope with maximum brightness over
a longer time. This will reduce the LED lifetime.
The battery runtime is up to 30 hours (at minimum illumination power).
6. OBSERVATION (FIG. 6)
You begin each observation with the lowest magnification
(eyepiece 10x and objective 4x). So, the object to be viewed
can easy be centred and properly focussed. The higher the
magnification the more light is required for good image quality.
Turn the objective revolver (4) onto the smallest magnification
and insert the 10x eyepiece. Now place a preparation directly
under the objective on the microscope table and fix it with the
slide clamps (6). Move the preparation on the table with the
lengthwise knob (15) and cross knob (16) of the mechanical
desk. look through the eyepiece (1) and turn the coarse
adjustment (13) carefully until the image becomes visible. The
optimal sharpness is achieved by the fine adjustment (14).
NOTE!
Make sure that you never overtighten the fine adjustment.
7. ADJUSTING THE INTERPUPILLAR DISTANCE
(only Erudit Basic Bino)
Place the preparation on the mechanical desk and bring it into
the exact focus. Adjust the interpupillar distance by folding the
eyepiece tubes (21) over its center axis at the microscope head
(3) until the right and the left field of view can be composed to
one.
8. DIOPTER SETTING
(only Erudit Basic Bino)
Place the preparation on the mechanical desk. Turn the 40x
objective (5) to the working position. Look through the right
eyepiece with the right eye first. Bring the image into focus
by turning the the coarse and fine focusing knob. Then look
through the left eyepiece with the left eye. Focus on the image
by turning the diopter setting (22).
9. CONDENSER
The condenser (7) is used to properly bundle the light of the
illumination to the viewed object. Turn the height adjustment
knob (10) to adjust the condensor.
Moreover the condenser can be adjusted by its two adjustment
screws (11). Use a small slot screwdriver or an Allen wrench
(depending on the model). Close the iris diaphragm (8)
completely and focus on an object with the 4x objective (5). Turn
the height adjustment (10) to move the condenser (7) downwards
until you clearly see the edge of the aperture. If the light area
is not centered, you can adjust the condenser (7) over the two
adjustment screws (11). When done this, move the condenser (7)
back into an optimal position and re-open the iris diaphragm (8).
10. IRIS DIAPHRAGM
An iris diaphragm (8) is used to enlarge the depth of focus. The
larger the aperture the more light you will get, but with a minor
depth of focus. A partly closed aperture will provide a better depth
of focus but it is therefore neccessary to increase the lighting.
Do not close the aperture (8) to much when working with a
higher magnification, because of a decreasing image resolution.
11. FILTER HOLDER
The filter holder (9) can be used for filters with a diameter of 32
mm and a thickness of approx. 1.5 mm (available optionally).
12. SMARTPHONE HOLDER (FIG. 7)
Put the Smartphone holder (20) over the eyepiece and fix it
with the knurled screw.
When using a device with binocular head (5102200), install
the holder to the left or right eyepiece.
NOTE!
The suction cups must be free of dust and dirt. It may help to
slightly dampen them.
Make sure that the Smartphone holder is mounted securely
and the Smartphone is firmly fixed on the plate.
Smartphones with a rough surface can not be fixed as good as
that one with flat surfaces. Make sure that it will not slip down.
Start the camera App on your Smartphone. The camera lens
must be placed directly over the eyepiece to get the image
centered in the middle of the LCD.
It can be neccessary to enlarge the image to the full LCD
size by using the camera zoom. A shadowing at the edges is
possible.
Remove the Smartphone from the holder after use.

13. MAINTENANCE AND STORAGE

Use only the recommended batteries!
Always replace weak or empty batteries with a new, complete
set of batteries at full capacity. Do not use batteries from
different brands or with different capacities. Remove the
batteries from the unit if it has not been used for a long time.
Do not disassembe the microscope!
Because of being a precise optical instrument, do not
disassemble the microscope casually. That may cause serious
damage to its performance. Do not disassemble the objectives.
Avoid contamination!
You should make sure that dust or moisture do not come in
contact with your microscope. Avoid putting fingerprints on any
optical surfaces! If dust or dirt nevertheless have gotten onto
your microscope, or the accessories, remove it as described
below.
Cleaning non-optical parts
Remove batteries from the device before cleaning non-optical
parts (e.g. housing, mechanical desk). Remove dust and dirt
from your microscope or its accessories by using a soft brush.
Clean the soiled area with a soft, lint-free cloth; the cloth may
be moistened with a mild detergent solution. Be sure that the
microscope is dry before using it. For cleaning the painted
parts or plastic components, do NOT use organic solvents
such as alcohol, ether, acetone, xylene or other thinner etc.!
Cleaning optical parts
In order to enhance the optical quality, the lenses of eyepieces
or objectives 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
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