BUCHI Nano Spray Dryer B-90 - Manual (Page 51)

5 Putting into operation
51 B-90 Operation Manual, Version B
5.6 Drying gas supply
The kind of drying gas supply (air or inert gases) depends on the kind of processed sample mate-
rial. There are significant differences between ‘open loop’ and ‘closed loop’ configuration of supply
and exhaust gases. Strictly follow the configuration descriptions in this section as well as the defined
proper and improper use in section 2 for safe operation.
! 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
! Warning
Death or serious poisoning by contact or incorporation of harmful substances at use.
• Before operation, check the instrument for correct assembling
• Before operation, inspect sealings and tubes for good condition
• Exchange worn out or defective parts immediately
• Exchange clogged filters immediately
• Only operate the instrument in ventilated environments
• Directly withdraw released gases and gaseous substances by sufficient ventilation
• Perform a dry-run without sample material and check for gas leakages
! Warning
Death or serious injuries by compressed gas.
• Depressurize gas circuit before any modification
• Wear safety goggles
Notice
Risk of instrument damage by wrong gas supply.
• All labels at gas connections must be clearly ledgible
• Before operation, check all gas connections for correct installation
• External supply pressure must meet the system specifications