Carl Zeiss
Start-Up and Operation
Primo Star
20
B 46-0071 v 03/06
En
g
lish
3.4
Converting the microscope
Unplug the plug-in power unit from
line power before converting the
microscope.
3.4.1
Changing the tube
•
Loosen clamp screw (Fig. 11/
2
), turn the
installed tube (Fig. 11/
1
) clockwise by
approximately 90° (Fig. 11/
A
) and on the right
side take it of upward (Fig. 11/
B
).
For reasons of space, the tube may
also be clamped by the grub screw
with hexagonal socket head supplied
with the tube.
•
Insert the tube to be installed, with the
eyepieces pointing to the right and its dovetail
mount slightly inclined, under the two holding
elements (Fig. 11/
4
) in the stand.
•
Then, place the tube horizontally onto the
stand. In doing so, the groove on the underside
of the tube must be located above the third
holding element (Fig. 11/
3
) of the stand.
•
Turn the tube counterclockwise by 45°
(eyepieces pointing frontward), align it to the
stand and tighten clamp screw (Fig. 11/
2
).
For space-saving storage of the
microscope (e.g. in a cabinet) the tube
may also be rotated by 180° to the
back.
3.4.2
Inserting color filters
•
Move the condenser carrier fully up by turning
the knurled screw for vertical adjustment
(Fig. 4/
15
).
•
Unscrew the cover cap (Fig. 12/
3
) from the
luminous-field diaphragm (Fig. 12/
1
).
•
Put the desired filter – yellow, green or blue –
(Fig. 12/
2
) onto the mounting surface of the
luminous-field diaphragm and screw the cover
cap back into place.
Fig. 11
Changing the tube
Fig. 12
Inserting a color filter
