3B Scientific Stereo Microscope, 40x, Transmitted-Light Illumination (115 V, 50__60 Hz) - Manual (Page 2)

3B Scientific GmbH • Rudorffweg 8 • 21031 Hamburg • Germany • www.3bscientific.com
Subject to technical amendments
© Copyright 2013 3B Scientific GmbH
3. Unpacking and assembly
The microscope is packed in a molded styro-
foam container.
• Take the container out of the carton remove
the tape and carefully lift the top half off the
container. Be careful not to let the optical
items (objectives and eyepieces) drop down.
• To avoid condensation on the optical compo-
nents, leave the microscope in the original pack-
ing to allow it to adjust to room temperature.
• Using both hands (one around the pillar and
one around the base), lift the microscope
from the container and put it on a stable desk.
The microscope is fully assembled except for the
eye-shields. Position them over the eyepieces for
viewing comfort and to block out any ambient
light. In addition, the object plate must be inserted
into the stage opening in the base. Please note
that you must remove the protective paper. With
the microscope you will find also a glass object
plate for transmitted- and mixed-light illumination.
4. Operation
4.1 General information
• Set the microscope on a level table.
• Place the object to be observed in the center
of the object plate. Use the clips to fasten it
into place.
• Connect the mains cable to the net and turn
on the switch to get the object illuminated.
• When using transmitted- or mixed-light illu-
mination replace black and white plate with
the glass plate.
• Turn the objective to get the desired magnification.
• On the rotary switch position I is for transmit-
tedlight, position II is for top-light and posi-
tion III is for mixed-light.
• Adjust the interpupillary distance between
the eyepieces by grasping the two prism-
housings with both hands and moving them
until one circle of light can be seen.
• Focus the object by turning the side knobs.
• It might be necessary to loosen the lock-
screw and raise or lower the entire stereo
head-bracket until the outline of the object is
found in the field of view.
• Be sure to tighten the lock-screw to fix the
height of the stereo head on the pillar.
• Always turn off the light immediately after use.
• Be careful not to spill any liquids on the mi-
croscope.
• Do not mishandle or impose unnecessary
force on the microscope.
• Do not wipe the optics with your hands.
• Do not attempt to service the microscope yourself.
4.2 Changing the lamp and fuse
4.2.1 Changing the lamp
• Turn off the power switch, unplug the mains
plug and let the lamp cool down.
• To change the lamp of the top light loosen
the lock-screw for the lamp-housing and re-
move the lamp screen.
• Remove the lamp and insert a new one.
• Remount the lamp screen.
• To change the lamp of bottom light remove
the cover from the base opening.
• Change the lamp in a similar way as de-
scribed above.
• Remount the cover.
4.2.2 Changing the fuse
• Turn off the power switch and unplug the
mains plug.
• Unscrew the fuse holder on the back of the
stand base with a screwdriver.
• Replace the fuse and reinsert the holder in
its socket.
5. Storage, cleaning, disposal
• Keep the microscope in a clean, dry and
dust free place.
• When not in use always cover the micro-
scope with the dust cover.
• Do not expose it to temperatures below 0°C
and above 40°C and a max. relative humid-
ity of over 85%.
• Always unplug the mains plug before clean-
ing or maintenance.
• Do not clean the unit with volatile solvents or
abrasive cleaners.
• Do not disassemble objective or eyepieces
to attempt to clean them.
• Use a soft linen cloth and some ethanol to
clean the microscope.
• Use a soft lens tissue to clean the optics.
• The packaging should be disposed of at
local recycling points.
• Should you need to dis-
pose of the equipment it-
self, never throw it away
in normal domestic
waste. Local regulations
for the disposal of electri-
cal equipment will apply.