Freeze-dryer Alpha 1-4 LDplus
Freeze-dryer Alpha 2-4 LDplus
6 Operation
Version 11/2006, Rev. 2.2 of 17/10/2016
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Translation of the original operating manual
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6.5.3.2
Special functions
The freeze-dryer is equipped with one or several optional accessories. The
components can be controlled by way of this function.
• Select the "Special functions" function in the main menu.
• Select the option by way of the up/down keys. The selected value will
be displayed in a selection frame.
Fig. 34: "Special functions" menu
• Confirm with the right function key "enter". The possible functions will be
displayed.
• If an option is selected that is not installed, a corresponding message
will be displayed:
Fig. 35: Message if an option is not available
Defrosting the ice condenser
As standard, the freeze-dryer is equipped with a defrosting system. The ice
condenser chamber is supplied with heat that melts the ice off the ice
condenser.
The freeze-dryer must be in the standby mode and completely aerated.
NOTE
During the defrosting process, the chamber should not be covered in order
to prevent the deactivation of the system due to overheating.
• The defrosting time and temperature can be set in the main menu under
"Options" (see chapter 6.5.3.4 - "Options").
• Select the function "Defrosting ice condenser" under "Special functions"
in the main menu (see above).
• Start the defrosting process by way of the right function key "start".
The progress of the defrosting process will be displayed in a dialogue box.
Fig. 36: Progress bar of the defrosting process
When the specified defrosting time has elapsed, the defrosting process will
be stopped. The dialogue box disappears automatically.
