Installing The Heat Extractor, Stationary (Optional); Installing The Knife/Blade Holder And Adjusting The Clearance Angle - Leica CM1950 Operating Manual

6.5.5 Installing the heat extractor, stationary (optional)

6.5.6 Installing the knife/blade holder
and adjusting the clearance angle
3
4
2
Leica CM1950 – Cryostat
1
Fig. 24
1
2
5
a
Fig. 25
The holder (1, Fig. 24) of the heat extractor 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.
Now attach the cover for the quick
freeze shelf to protect the shelf from
frost.
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.
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. Safety gloves
must be worn!
6. Installation
27