Leica Biosystems RM2255 - Manual (Page 28)

26 Instructions for Use, V 1.8 RevC – 07/2013
5. Operation
• To change the display mode, push MENU MODE until the LED of the
desired mode is illuminated.
• Press CLEAR to reset section thickness sum or section number.
• This will only reset the currently displayed value.
Four-digit display on the instrument
The four-digit display is adjustable.
When the Σ µm LED is lit, the display shows
the sum of the section thicknesses in µm for all
sections completed since the instrument was
switched on.
(Section thickness sum)
When the Σ n LED is lit, the display shows the
number of all previously completed sections.
Fig. 17
• Press the button to start the slow backwards movement. The travel contin-
ues as long as the button is held depressed.
• Press the appropriate button to start a rapid or slow forward movement. The
travel continues as long as the button is held depressed.
• During the forwards movement, the yellow LED (41) in the button flashes. When
the front end position is reached, an acoustic signal is heard and the LED stops
flashing and remains lit.
41
Forward coarse feed
Specimen retraction
To prevent damage to the blade and specimen, the specimen is moved away from the blade
during the return motion to the upper home position.
Caution! When the instrument is switched off using the main power
switch, both values (section thickness sum and section number)
are erased from memory.
In motorized sectioning mode, the retraction depends on the setting of the sectioning
speed.
In manual mode, the retraction value can be selected in 5 µm increments between 5 and 100 µm.
Specimen retraction is set to 10 µm at the factory.
The specimen retraction can also be deactivated for the manual and motorized operation if
required.
The selected setting is maintained when the instrument is turned off.