Leica Biosystems CM1950 - Manual (Page 39)

39 Leica CM1950 – Cryostat
8. Working with the Instrument
• Place working materials such as the blade box or knives (in the knife case), brush, forceps
or preparation needles and, where applicable, specimen discs into the cryostat chamber.
• The necessary tools and preparation aids
can be precooled on the (optional) movable
shelf, making them available at all times in a
convenient position for the user.
• Additionally, specimen discs can be pre-
cooled and stored in the storage system ( see
Chap. 6.5.2 - Fig. 21 ).
8.2 Switching on the instrument
The circuit breaker is used simultaneously as the power switch. The switch
must be in the top position for switching on and in the bottom position for
switching off. The switch must be accessible without obstruction.
• Close the sliding window.
The knives are extremely sharp! Handle with care!
Never try to catch a falling knife!
8.1 Preparing cutting tools, specimen discs and preparation aids
For installation of knife/blade holder
and installation in the chamber see
Chap. 11 "Optional Accessories" .
The instrument must be switched on at least 5 hours before the
planned use.
To avoid frost formation always put the cover on the quick freeze
shelf.
Always cover the quick freeze shelf during breaks and overnight.
Fig. 40
Fig. 41