3b-scientific Stereo Microscope, 20x, Top-Light Illumination (23 Manuel d'utilisateur télécharger pdf (Page 2)

3B Scientific GmbH • Rudorffweg 8 • 21031 Hamburg • Germany • www.3bscientific.com

Subject to technical amendments

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 com-

ponents, leave the microscope in the original

packing to allow it to adjust to room tem-

perature.

• 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 eye-

pieces 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.

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.

• 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 objective

• Loosen the lock-screw on the objective

mount with a small screwdriver and pull out

the objective assembly horizontally.

• Insert an alternate objective by sliding it into

the objective mount.

• Secure it by tightening the lock-screw.

4.3 Changing the lamp and fuse

4.3.1 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.

4.3.2 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

dispose of the equip-

ment itself, never throw

it away in normal do-

mestic waste. Local

regulations for the dis-

posal of electrical

equipment will apply.

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3b-scientific Stereo Microscope, 20x, Top-Light Illumination (23 Manuel d'utilisateur Page 2

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