Martin Christ Alpha 2-4 LDplus - Manual (Page 51)

Operating Manual Freeze Dryer ALPHA 1-4 LDplus / ALPHA 2-4 LDplus LDplus Control System 51
5.9. LDplus special functions
5.9.1. Defrosting the ice condenser
Depending on the equipment variant, the freeze-dryer can be
equipped with a defrosting device. If the system is defrosted with a
defrosting device, heat is supplied to the ice condenser chamber in
order to melt the ice that has built up on the ice condenser.
Enter the required time for defrosting under Menu -> Options -
> Time Defrosting.
Enter the maximum temperature of the chamber or ice condenser
during defrosting under Menu -> Options -> Temperature
Defrosting.
Open the menu Menu -> Special functions -> Defrosting ice
condenser.
In order to defrost the ice condenser, the unit must
be in the standby mode and completely aerated.
Defrosting should be performed without a lid on the
chamber in order to prevent the system from
shutting down due to overheating.
Press the right-hand softkey Start to start the defrosting
process. The following window is displayed. It shows the progress
of the defrosting process.
The illustration varies depending on the equipment variant.
When the defrosting time is over, the defrosting process is stopped
and the window is closed.
You can set the time required for defrosting under Menu ->
Options -> Settings -> Defrost ice condenser.
5.9.2. Electrical lifting device (option)
To move the drying chamber with the help of the electrical lifting
device, open the menu Menu -> Special functions ->
Electrical lifting device.
In order to move the drying chamber, the unit must
completely aerated. It is not possible to move the
drying chamber during main drying or final drying.
Use the “up” and “down” keys to move the drying chamber.