Leica Biosystems CM1100 - Manual (Page 15)

15 Leica CM1100 – Cryostat
7.4.4 Starting and terminating a manual defrost
cycle
• To activate manual defrosting, press 'P' and the
'Arrow-up' key simultaneously. Indication switches
from LED 1 to LED 3.
LED 3 illuminates for 10 minutes until the ac-
tual defrost cycle begins.
LED 2 goes on in addition when defrosting
starts.
The overall duration of the defrost cycles is
set to 20 minutes in the factory.
• To deactivate manual defrosting before completion
of a defrost cycle, press 'P' and the 'Arrow-up' key
simultaneously. LED 2 and LED 3 extinguish, LED 1
is illuminated.
7. First use of the instrument
7.4.3 Setting user definable parameters
• To access parameter programming, press the P-
button.
Any programming field can be accessed for 30 sec-
onds. After that time the display automatically resets
to actual temperature indication. Parameters can be
modified via the arrow keys.
• To adjust the set temperature, press 'P' and modify
the value via arrow key.
• To set the defrost time, press 'P' again and modify
the value via arrow key.
Fig. 15
The first two digits are used for hour indication, the
last digit is used for minute indication. Since there is
just one digit for the minute indication, the shown value
has to be multiplied by ten. The defrost time can be
adjusted in 10 minute steps. Fig. 15 shows defrost-
ing time set at 23:50 hours.
• To set the real time, press 'P' for hour indication
and modify the value via arrow key. Press 'P' again
for minute indication and modify the value via ar-
row key.
• When pressing 'P' once more the display shows
'00'. In this mode the entry of a code number is re-
quired. Since coded parameters are reserved for
service personnel only, press 'P' again to return to
set temperature indication, or wait 30 seconds un-
til the display resets to actual temperature indica-
tion.