BUCHI Nano Spray Dryer B-90 - Manual (Page 67)

6 Operation
67 B-90 Operation Manual, Version B
6.4.3 Gas mode selection menu
To enter the “Menu” press the corresponding multifunctional button below the screen. Inside the
menu, use the multifunctional buttons for navigation.
Select “Gas mode” and enter the selection. Select the correct setting for the actual spray drying
process and confirm the selection with “OK”.
NOTE
• Set to “Air” for ‘open loop’ mode
• Set to “~4 % O
2
” for ‘closed loop’ mode with inert gas N
2
and CO
2
(only Nano Spray Dryer B-90
Advanced)
• Set to “~1 % O
2
” for ‘closed loop’ mode with increased inert gas N
2
and CO
2
consumption (for
oxygen and ozone sensitive material; only Nano Spray Dryer B-90 Advanced)