DARA – Production freeze dryers

Cool vacuum developed a complete range of industrial freeze dryers, with a useful shelf area from 0.5 to 45 m2, to cover different production needs. With 5 basic models and more than 40 optional features, Cool vacuum freeze dryers can be adapted

to the specific needs of our clients. Using only the best and most reliable materials and components, our equipment complies with the quality levels expected by the advanced pharmaceutical industry.

Dara Production Freeze Dryers1

Quality and performance standards
Performance data
Sublimation rate	from 1 to 35 kg/h
Preparation time between batches (CIP / SIP, drying, cooling)	8 h
Chamber
Surface roughness	0.8 µm
System leak rate	0.008 mbar x l/s
Shelves
Flatness on shelf surface	1 mm/m
Surface roughness on top side (Ra)	0.8 µm
Surface roughness on bottom side (Ra)	0.8 – 1.4 µm
Temperature distribution on one shelf	<1 °C
Temperature distribution in shelves stack	<1.5 °C
Temperature difference between the inlet and outlet of a shelf	<1 °C
Condenser
Inner surface of condenser	Mirror
Surface roughness of condenser coil	Cold drawn
Defrosting time	from 20 to 60 min
Evaporation surface ratio vs shelf surface	0.99 m2/m2
Cooling and heating
Shelves cooling rate from +20 ºC to -40 ºC	1.5 °C/min
Shelves heating rate from -40 ºC a +60 ºC	1.5 °C/min
Temperature range during drying	from -50 °C to +60 °C
Condenser cooling rate +20 to -40ºC	1.5 °C/min
Final condenser temperature	-75 °C
Vaccuum
Final system vacuum	0.005 mbar
Final vacuum of freeze dryer	0.01 mbar
Vacuum evacuation time from 1,000 a 0.1 mbar	30 min

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