Chapter 4: Lyo-Works Operating System
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Original instructions
“New” program
When the “New” button is selected, the following screen will be displayed.
Pressing the program name field will allow you to edit the program name.
The Step numbers are listed in numerical order. Ramp Rate, Shelf Temp., Time,
and Vacuum can be edited by pressing any of these cells. The “Add” button will
add a new Step to the program. Pressing the “remove” button will delete the
selected step from the program. Changes will not be saved until the “Save” button
is pressed. Pressing the “Back” button will return to the Programs screen without
saving changes.
Ramp Rate –
This allows the temperature of the system to be increased or
decreased at any desired rate within the capacity of the heating and cooling
systems of the Freeze Dryer. Without samples on the shelf, the system is
capable of cooling at a rate of approximately 0.5°C/min from 50°C to 0°C,
.25°C/min from 0°C to -55°C, and can heat at approximately 3°C/min.
Ramp Rate may be set anywhere from 0.05°C to 3.0°C/min.
