13
Leica RM2255
3.
Instrument components and specifications
Fig. 8
Motor
protection
fuse
Heat sink
Voltage selector
switch with fuses
Main switch
Power
connection
Connecting
cable for
control panel
Connecting jack
for foot switch
3.2 Instrument specifications
The Leica RM2255 is a motorized rotary
microtome.
•
The specimen feed system with zero-back-
lash and maintenance-free cross roller
guides and the stepper motor operated
coarse feed system are located in a dust-
proof plastic housing.
•
The instrument is equipped with a safety
handwheel with a handle that can be
centered, as well as a mechanical hand-
wheel lock.
•
All controls and LEDs are centralized in a
separate control panel.
All control elements are logically arranged in
functional groups and easily identifiable.
•
The specimen retraction can be turned off.
In manual operation the retraction can be
adjusted. In motorized operation the
retraction value varies with the selected
sectioning speed. An LED illuminates while
the sample is in retraction.
•
The electric coarse feed operates at two
speeds. In the sectioning mode, the coarse
feed buttons have a
STEP
function.
•
Three motorized sectioning modes (
CONT
,
SINGLE
, and
STEP
) are available as well as
one manual sectioning mode, the rocking
mode (
ROCK
).
In rocking mode, it is enough to move the
handwheel a short distance back and forth
in order to create a section.
Rear side of instrument
Magnet for holding
the wrench
