Leica Biosystems CM1950 - Manual (Page 37)

37 Leica CM1950 – Cryostat
Sectioning modes
Hold the button to section at
maximum speed.
Release the button to continue
sectioning at the previously
selected speed
( see controller, above ).
Control panel field 3 – Motorized sectioning (optional)
7. Instrument Controls
Switching the sectioning
mode ("CUT MODE")
from continuous stroke
("CONT") to single stroke
("SINGLE") (active)
Press to brake the handwheel
electronically (LED lit) – specimen stops
in lower (6 o'clock) position.
Can be used in any position.
Motor speed
controller (0-100 %)
The red LED in the E-STOP field indicates
either:
• emergency-stop function active, or
• Footswitch dummy (opt. foot switch)
not connected or incorrectly
connected.
The mechanical handwheel brake is
enabled when the yellow LED is lit in the
M-STOP field.
Speed ranges
slow: 0 – 50 strokes/min
fast: 0 – 85 strokes/min
Vmax: 85 – 90 strokes/min
The microtome can be used both in manual and motorized operation.
The following settings are available:
• Single stroke (SINGLE) or continuous stroke (CONT.) in motorized mode, and
• ROCK (sectioning using handwheel) in manual mode.
1. Press the buttons at the same time to
start motorized sectioning.
2 To end the sectioning process, press RUN/
STOP, ENABLE or BRAKE – Specimen
head stops at bottom (for BRAKE, auto-
matic electronic braking takes place).
3 Does not have to be unlocked during
motorized sectioning; continue work-
ing by pressing both the RUN/STOP and
ENABLE keys.
4. work using the handwheel, you have
braked using BRAKE, also use BRAKE
to release!
Switch from slow speed
range to fast speed range:
while switching on the in-
strument, press and hold
down the Vmax button.
If emergency stop has been acti-
vated, the cutting mode must be se-
lected again.
The handwheel must also be locked
when working on the specimen head.
Fig. 38
When switching the instrument on, no operating mode is active for safety reasons.