BUCHI Inert Loop B-295 - Manual (Page 51)

6 Operation
51 B-290 Operation Manual, Version I
6 .4 Optimizing parameters
The parameters relevant for the spray process (aspirator and pump performance as well as inlet
temperature) all correlate with and depend on each other. To give you an overview over the parameter
settings best suited for your process, special training papers can be downloaded directly from the
Internet.
Please visit our homepage www.buchi.com. In the section Fields of Activities/Spray Drying, you will
find the document to download.
6 .5 End of spray process
• After the solution is completely spray dried, continue to spray pure solvent for a short time to
remove product deposits from the hoses and the nozzle. Air and solvent should alternate to ensure
an efficient cleaning.
• Pump the hoses empty, turn off the peristaltic pump and lower the pump bed.
• Turn off the nozzle cleaner.
• Turn off the heating. The system cools down now.
• As soon as the tempera ture in the instrument falls below 90 °C, you can turn off the aspirator.
• You can now remove the product collection vessel with the product.
• ATTENTION
Do not remove the product collection vessel when the aspirator is still on as the air stream might
blow the product out of the vessel into the surrounding area.
6 .6 Recovering particles of the outlet filter
! Danger
Death or serious poisoning by inhalation or incorporation of dried particles at recovery.
• Wear safety goggles
• Wear safety gloves
• Wear a suitable protective mask
• Wear a laboratory coat
• Do not inhale dried particles
• Stop drying gas flow before opening the drying circuit
• Only recover particles in sufficiently ventilated flue or glove-box
• Do not disperse the dried particles
• Do not clean dusty parts with compressed air