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7.6
Defrosting
Defrosting the cryochamber actually means defrosting the evaporator to prevent excessive frost buildup.
The evaporator is flushed with hot gas during defrosting. The cryochamber itself is not being defrosted.
The condensation water that is produced during defrosting is collected in a waste container, which is
located next to the instrument.
Warning
To ensure a secure flow of condensate and to prevent a potential contamination risk, the drain tube (on
the side next to the instrument) must be inserted in an external waste container.
Note
The quick freeze shelf is cooled during the automatic cryochamber defrosting.
The maximum duration of a defrost cycle is 12 minutes. Defrosting is terminated automatically once
the cryochamber has reached a temperature of -5 °C. Cooling turns back on automatically.
7.6.1 Automatic defrosting of the cryochamber
One automatic defrost of the cryochamber takes place per day.
You can program the time of the automatic defrost cycle on control panel 1
the automatic defrost time
7.6.2 Manual defrosting of the cryochamber
Note
To avoid an unintended defrosting, the activation of a manual defrost cycle is confirmed by an audible
signal.
Cooling turns back on automatically.
To avoid frost formation, always put the proper cover on the quick freeze shelf. Always cover the quick
freeze shelf during breaks and overnight.
In addition to the programmed automatic defrost, a manual defrost for the cryochamber can also be
activated (→ P. 33 – 6.2.5 Manual defrosting of the cryochamber).
Leica CM1520
(cryochamber)).
Daily Use of the Instrument
(→ P. 32 – 6.2.2 Setting
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