Chapter 4: Lyo-Works Operating System
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Original instructions
“New” program
When the “New” button is selected, one of the following program templates will
be displayed, depending on the type of accessory connected to the Freeze Dryer.
Bulk TD, Tray Dryer, Heated Product Shelves
Stoppering Tray Dryer
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 – (Stoppering Tray Dryer only)
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 Stoppering Tray Dryer.
Without samples on shelves, the system is capable of cooling at a rate of
approximately 0.5°C/min and can heat at approximately 1.3°C/min. The
cooling ramp rate may be slower as the temperature approaches –40°C.
Ramp Rate may be set anywhere from 0.05°C to 1.5°C/min.
Shelf Temp.
– Stoppering Tray Dryers may be set anywhere from +40°C
to –40°C in 1°C increments. There is also a Max Cold (MC) setting that
