Buchi Nano B-90, Operation Manual

Page: 55 / 104

5 Putting into operation
55
B-90 Operation Manual, Version B
5.7.2 Aspirator in ‘closed loop’ configuration
This operation mode is only available in combination with a Nano Spray Dryer B-90 Advanced model.
a
b
c
d
a
Gas inlet (connection to outlet of Inert Loop B-295
or Dehumidifier B-296)
b
Gas outlet towards gas inlet connector of the Nano
Spray Dryer B-90 in Polypress design
c
Output flow-through selector (frequency based
regulation)
d
Mains socket, switch and fuse box
The Aspirator has a bench top dimension of
47,5×30×32 cm and can be placed beside the Nano
Spray Dryer B-90 Advanced or on the tray of the trol-
ley.
Installation steps
1. Disconnect the power cord from the mains and depressurize all system parts.
2. Connect the gas inlet a to the outlet of Inert Loop B-295 or Dehumidifier B-296.
3. Connect the gas outlet b to the GAS IN connection of Nano Spray Dryer B-90 Advanced.
4. Connect the power cord to the mains. The device can now be switched on.
NOTE
The Aspirator can not be used in combination with the flow regulation valve. Remove the flow regula-
tion valve if mounted.
5.8 Inert Loop B-295 installation
In ‘closed loop’ the Nano Spray Dryer B-90 Advanced can be combined with the Inert Loop B-295
upgrade set and the Aspirator. This enables spray drying of organic solvent solutions under inert
conditions in a fume hood or equivalent. Additionally an adsorption column can be installed to dry the
recirculating gas.
! Danger
Death by suffocation or serious poisoning by inhalation of inert gases.
• Do not inhale inert gases
• Directly withdraw released gases and gaseous substances by sufficient ventilation
• Only operate the instrument in ventilated environments
• Before operation, check all parts, connections and sealings involved in the gasflow for proper
sealing
• Exchange worn out or defective parts immediately