29
Leica RM2255
5.
Operation
Mode selection
•
For selecting the mode, press the
CUT MODE
button on the control
panel until the green LED of the desired operating mode is displayed.
Manual sectioning mode
•
Select
ROCK
operating mode.
•
Turn the handwheel a short distance forwards and backwards for
sectioning (rocking mode).
Each change in the sense of rotation will be electronically detected and
automatically converted into an advance or retraction movement of the
specimen.
In the manual sectioning mode, it is possible to use either the
conventional method of completing a full handwheel rotation or to
work in the rocking mode ("Rock").
Start and stop motorized sectioning
•
To start motorized sectioning, press the
RUN/STOP and ENABLE
buttons simultaneously after selecting the desired operating mode.
•
While the cutting motor is running, the yellow LED in the
RUN/STOP
key lights up.
•
To stop motorized sectioning, press
RUN/STOP or ENABLE
.
If both the green and the yellow LEDs in the
RUN/STOP
button are lit up,
the cutting motor is still running; however it will stop in the next upper end
position of the vertical stroke.
Sectioning modes
The microtome can be used both in manual and
motorized operation.
You can choose between four settings:
ROCK
in manual mode as well as
CONT
,
SINGLE
and
STEP
in motorized mode.
For safety reasons, when the instru-
ment is first switched on, none of the
operating modes is active.
and
or
44
45
Fig. 18
