Leica CM3050 S instruction manual Manual chamber defrost cycle

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:

S E T T E M P C T - 3 0 ° C

￿ -

•Press . A brief sound signals that the manual chamber defrost cycle has started:

S E T T E M P C T - 3 0 ° C

￿-

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 tem- perature’ and press again.

Instruments with specimen cooling:

When defrosting starts, to avoid icing the spec- imen head is automatically adjusted to a tem- perature between -10 °C and -5 °C, i.e. the set temperature value is deactivated temporarily. (same as with automatic defrost cycle - see chapter 5.7.1 ‘Automatic chamber defrost cy- cle’)

10 seconds after the manual chamber defrost cy- cle has been completed, the specimen head re- frigeration is switched back on, cooling down to the set value.

5.7.3Defrosting the specimen head (instruments with specimen cooling only)

To activate specimen head defrosting:

•Press until menu item ‘Set specimen temperature’ is displayed:

S E T T E M P O T - 3 5 ° C

￿￿

•Press . A brief sound signals that the manual chamber defrost cycle has started:

S E T T E M P O T - 3 5 ° C

￿￿

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.

46 Instruction Manual V1.2 - 11/2006