Leica CM1950 Manuel D’Utilisation

27

Leica CM1950  – Cryostat

6.

Installation

6.5.5 Installing the Heat Conductor Block, Stationary (Optional)

Fig. 24

6.5.6 Installing the Knife/Blade Holder

and Adjusting the Clearance Angle

For temperature reasons, install the
knife/blade holder on an appropriate
base.

•

Set the knife or blade holder (1, Fig. 25) on the
base (2), adjust the clearance angle (on the
left of the knife/blade holder) to approx. 2°-5°
and secure it in the bore (3) on the base (2)
using the No. 4 Allen key.

•

Push the knife holder base (2) on the dovetail
guide (4) from the front and tighten it using the
clamping lever (5). To move the base, open the
clamping lever only a little to prevent acciden-
tal sliding in the direction of the specimen
head.

•

If the clamping distance is not sufficient, the
clamping lever (3) can be moved. To do so, pull
the lever out and move it to the next position.

The holder (1, Fig. 24) of the heat conductor block
is screwed to the left housing wall using the
No. 4 Allen key provided. (Preferably, begin with
the bottom screw. Then, rotate the holder
upwards (see arrow) and insert and tighten the
top screw).

1

Fig. 25

4

When removing the knife holder base
(2) from the refrigerated cryostat
chamber, hold it by the grip points
(a – front and rear) to keep your
fingers from freezing.

Now, attach the cover for the quick
freeze shelf to protect the shelf from
frost.

1

2

3

2

a

5