Leica Biosystems CM1860/CM1860 UV - Manual (Page 12)

12 Instructions for Use V1.4 – 10/2012
2.3.2 Knife guard
Prior to manipulating the knife and specimen, changing the speci-
men or knife, or taking a break, always lock the handwheel and
cover the cutting edge with the knife guard.
The CN and CN-Z knife holders feature knife guards; the glass anti-roll plate
of the CE and CE-TC blade holders also serves as a knife guard.
2. Safety
2.3.1 Locking/unlocking the handwheel
Rotate the handwheel only if the refrigeration system is on and the
cryochamber is cold.
Always lock the handwheel prior to making modifications to the
knife or specimen, changing the specimen, or taking a break.
To lock the handwheel, move its handle to the 12 or 6 o'clock position. Press
the lever (1) fully outward; gently rock the handwheel back and forth until
the locking mechanism clicks into place noticeably.
To release the handwheel, press the lever (2) on the handwheel toward the
cryostat housing.
12 o'clock
position
6 o'clock
position
1
2
Fig. 2
Fig. 3