Leica Biosystems CM1520 - Manual (Page 43)

43 Leica CM1520 – Cryostat
Knife holder CN with anti-roll guide – Moving the clamping chucks
2
3a
4 4
3
The clamping jaws are factory-installed in the
knife holder with a clearance of 64mm. If neces-
sary, both clamping jaws can be offset with a
clearance of 84 mm.
Perform the following steps:
• Use a 4 mm Allen key to loosen the screw
over the clearance angle adjustment (23) and
remove the segment arc (2) from the blade/
knife holder base.
• Use a 4 mm Allen key to loosen the screws (4)
on the underside of the segment arc.
Fig. 44
5
6
Fig. 45
• Lift off the clamping jaw (5) on the right side
(caution: washers) and feed it into the adjacent
hole (6). Tighten the screws from the underside
of the segment arc. Repeat on the left side.
Now use the longer knife back rest provided.
3a
23
7. Daily Use of the Instrument

Never work with only one clamping
jaw, as this does not ensure the stabil-
ity required for the sectioning process.
Also, a long knife will not be sufficient-
ly protected by the knife guard in this
instance.
If large specimen discs are to be used with the knife holder (e.g. 50 x 80 mm), it is pos-
sible to shift the clamping jaws laterally.