Leica Biosystems CM1520 - Manual (Page 28)

28 Instructions for Use V1.3 – 10/2012
6.2.2 Setting the automatic defrost time (cryochamber)
The automatic defrost cycle takes place once every 24 hours.
Briefly touch the or button to display the beginning of the defrost
cycle which has currently been set. At the same time, the LEDs between
the indication of hours and minutes are flashing.
To change the beginning of the defrost cycle in 15-minute increments, press
the or button. The defrost time is 12 minutes.
6.2.3 Selecting the cryochamber temperature
The temperature of the cryochamber is set and indicated on the panel marked
with the cryostat symbol.
The actual temperature is the standard indication. Briefly touching the
or the button displays the target temperature.
You can now set the desired value using these buttons. Pressing the or
button for more than 1 sec. increases or decreases the chamber tem-
perature continuously.
The actual value will be indicated 5 seconds after finishing the programming.
6. Operating the Instrument
Fig. 16
Fig. 17
 
You can activate the manual defrost of the quick freeze shelf by pressing
the key (continuous tone sounds), followed immediately by the key
(continuous tone stops).
To shut off the manual defrost early, press the key, followed immediately
by the key. The quick freeze shelf can become hot during the defrosting
process. The defrost time is 12 minutes.
Fig. 18
6.2.4 Manual defrosting of the quick freeze shelf
The quick freeze shelf can become hot during the defrosting process.
Therefore, do not touch it!
The quick freeze shelf and cryochamber cannot be defrosted at the
same time.