VWR International, LLC., Stereo Zoom Microscope
9
b. Only clean the outer surface, dampening a soft cotton cloth slightly with Xylene, and afterwards,
drying the lens with the same cloth.
B. Electrical maintenance
1. Changing the bulb
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Changing the transmitted illumination bulb
a. Turn the stereomicroscope on its side with extreme care,
especially with the eyepiecesand the stage.
b. Unscrew the four screws indicated. (Fig. 2)
c. Open the cover on the base.
d. Using a cloth, carefully pull out the bulb to disconnect it from the socket.
e. Do not touch the new bulb with bare hands, use a clean cloth. Insert the pins of the bulb in the
socket.
f. If the bulb is accidentally touched with bare hands, it must be cleaned, as this could affect the
transmission of light, and life span of the bulb.
g. Close the cover on the base and screw down firmly.
●
Changing incident illumination bulb
a. Unscrew the illuminator protector tube, turning it anti-clockwise, and removing the tube from that of
the lenses.
b. With a cloth carefully pull out the bulb to disconnect it from the socket.
c. Do not touch the new bulb with bare hands, use a clean cloth. Insert the pins of the bulb in the
socket.
d. If the bulb is accidentally touched with bare hands, it must be cleaned, as this could affect the
transmission of light, and life span of the bulb.
e. Replace illuminator lens tube, turning in clockwise, and screwing in the protector tube.
3. Changing the fuse
a. With a flat screwdriver, lightly press on the slot of the fuse holder cover (Fig. 1) and turn 1/4 in the
direction of the arrow marked.
b. Release pressure and completely remove the loosened cover.
c. Remove the fuse from the removed cover, and insert the new one, make sure that it is 0.5 Amps.
d. Insert the cover.
e. Repeat step (a.) but turning 1/4 in the opposite direction to the arrow. The cover must be firmly
closed.