Leica Biosystems CM3050 S - Manual (Page 46)

46 Instructions for Use V 1.7 RevC - 08/2014
5. Operation
5.7.2 Manual chamber defrost cycle
In addition to the automatic defrost cycle, a
manual chamber defrost cycle can be activat-
ed when necessary.
• Press
until menu item ‘Set chamber
temperature’ is displayed:
• Press . A brief sound signals that the
manual chamber defrost cycle has started:
The manual defrost cycle ends either when the
selected defrost cycle duration is over or when
a chamber temperature of -5 °C is reached.
To abort the manual defrost cycle:
• Go back to menu item ‘Set chamber temper-
ature’ and press again.
Instruments with specimen cooling:
When defrosting starts, to avoid icing the speci-
men head is automatically adjusted to a tem-
perature between -10 °C and -5 °C, i.e. the set
temperature value is deactivated temporar-
ily. (same as with automatic defrost cycle - see
chapter 5.7.1 ‘Automatic chamber defrost cycle’)
10 seconds after the manual chamber de-
frost cycle has been completed, the specimen
head refrigeration is switched back on, cooling
down to the set value.
5.7.3 Defrosting the specimen head
(instruments with specimen cooling
only)
To activate specimen head defrosting:
• Press
until menu item ‘Set specimen
temperature’ is displayed:
• Press . A brief sound signals that the
manual chamber defrost cycle has started:
Specimen head temperature increases to be-
tween +20 °C and +30 °C for a duration of
10 minutes, after which it returns to the set
value.
To abort specimen head defrosting:
• Press
until menu item ‘Set specimen
temperature’ is displayed and press
once more.
S E T T E M P C T - 3 0 ° C
 -
S E T T E M P O T - 3 5 ° C
 
S E T T E M P C T - 3 0 ° C
 -
S E T T E M P O T - 3 5 ° C
 