3B Scientific Stereo Microscope, 40x, Transmitted-Light Illumination (115 V, 50__60 Hz) - Manual (Page 4)

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3. Unpacking and assembly
The microscope is packed in a molded styrofoam
container. Take the container out of the carton remove
the tape and carefully lift the top half off the container.
To avoid condensation on the optical components,
leave the microscope in the original packing 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
W30663 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 illumina-
tion replace black and white plate with the glass
plate.
• On the rotary switch position I is for transmitted-
light, position II is for top-light and position 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.
4.2 Changing the objective
•
Loosen the lock-screw on the objective mount with
a small screwdriver and pull out the objective as-
sembly horizontally until it clears the objective
housing.
•
Insert an alternate objective by sliding it into the
objective mount.
•
Secure it by tightening the lock-screw.
4.3 Changing the lamps and fuses
4.3.1 Changing the lamps
•
Turn off the power switch, unplug the mains plug
and let the lamp cool down.
• Do not touch the bulb with the bare hand.
•
To change the lamp of the top light loosen the
lock-screw for the lamp-housing and remove the
lamp screen.
• Remove the lamp by pressing it downward out of
the clamp socket.
•
Insert the new lamp and seat it firmly in place by
lightly pressing it upwards.
• 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 described
above.
•
Remount the cover.
4.3.2 Changing the fuses
•
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.
Cat. no. W30662 W30663
Tube Binocular inclined 45°, Binocular inclined 45°,
stereo head rotation 360°, interocular stereo head rotation 360°, interocular
distance adjustable between 55 mm and distance adjustable between 55 mm and
75 mm, diopter compensation ±5 mm 75 mm, diopter compensation ±5 mm
Eyepieces Exchangeable widefield eyepiece Exchangeable widefield eyepiece
WF 10x with eyepiece lock, WF 10x with eyepiece lock,
rubber eyepiece cups rubber eyepiece cups
Objectives Revolving nosepiece with objectives 2x / 4x Revolving nosepiece with objectives 2x / 4x
Magnification 20x / 40x 20x / 40x
Illumination Top-light illumination,12 V/10 W, Top-, transmitted- and mixed-light
with toggle switch, power supply illumination, 12 V/10 W lamps,
115 V resp. 230 V 50/60 Hz, 2 fuses T 0.125 toggle switch to turn ON, rotary switch to
select light combination, power supply
115 V resp. 230 V 50/60 Hz, 2 fuses F 0.16
Dimensions 170 mm x 300 mm x 115 mm 190 mm x 300 mm x 115 mm
Weight 2.4 kg 2.9 kg
Supplied Complete with dust cover Complete with dust cover