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35
Leica CM1950 – Cryostat
7. Instrument Controls
Disinfection
Duration - 30min
Duration - 180 min
UVC key - to activate / deac-
tivate the disinfection cycle
and/or to acknowledge in-
terruption of a disinfection
cycle.
To start disinfection the sliding window must be
completely closed.
• Press UVC key once briefly to start the
30 min. mode
• Press UVC key once for a longer time
(approx. 4sec.) to start the 180 min. mode
Specimens and section waste must be thoroughly removed from
the cryochamber first (e. g. using the optional vacuum extractor, or
a paper towel soaked with Cryofect or alcoholic disinfectant).
Before UV disinfection, move the anti-roll guide to the side to
allow complete disinfection.
• Leica Cryofect is not available in all countries.
When the keypad lock is activated (via the key button) the UV lamp
can be shut off only by opening the glass, as the UV keys are
locked.
The cancellation can be acknowledged only if the keypad lock is
disabled. Only then can the UV lamp be switched back on.
Opening the sliding window cancels the disinfection cycle. Press
the UVC key to acknowledge this.
Fig. 35
The germicidal UV lamp is a simple and safe disinfection device
which considerably reduces the risk of infection.
Nevertheless, UV light disinfection cannot replace chemical
disinfection of the cryochamber at regular intervals.
UV light disinfection is effective only on those surfaces that are
directly illuminated.