Labconco FreeZone 76700 Series User Manual
                                                                 | |
Contents
| 
Chapter 4: Using Your Freeze DryerProduct Service 816-333-8811 or 1-800-522-765820BaffleThe cylindrical plastic component shipped with Cascade Freeze Dryers (Models76700XX and 74200X) is a baffle, which is designed to evenly distribute collectedice over the entire collector coil. Proper positioning of the baffle is required toachieve maximum ice loading capabilities.The baffle installs into the collection chamber with the flat flange upward. Thelarge boss on the flange should be positioned toward the rear of the chamber. Thearrow should point toward the front of the Freeze Dryer.Automatic Start-UpTo run the Auto Mode, press the panel switch labeled REFRIGERATION AUTO.The green LED above the switch will illuminate. This will start the refrigerationsystem. When the collector reaches –40°C, the vacuum pump will start. TheTemperature and Vacuum Graph will indicate collector temperature and systemvacuum. The LCD display will show the actual temperature of the collector.When the vacuum in the system is above 5 mBar the vacuum display will indicate“HI.” At 5 mBar and below, the display will show the actual vacuum.When the system vacuum is between 0.450 and 0.133 mBar, the lower greenvacuum graph LED will flash. When the system vacuum level is <0.133 mBar, thegreen LED will be lit steadily indicating that most samples may be added.Manual Start-UpTo manually run the freeze dry process press the REFRIGERATION MAN switch.This will start the refrigeration system. The green LED above the switch willilluminate. When the collector temperature reaches –40°C, the vacuum pump maybe started by pressing the VACUUM switch. The Temperature and VacuumGraph will indicate collector temperature and system vacuum. The LCD displaywill show the actual temperature of the collector. When the vacuum in the systemis above 5 mBar the vacuum display will indicate “HI.” At 5 mBar and below, thedisplay will show the actual vacuum.When the system vacuum is between 0.450 and 0.133 mBar, the lower greenvacuum graph LED will flash. When the system vacuum level is <0.133 mBar, thegreen LED will be lit steadily indicating that samples may be added.Setting the Operating Vacuum LevelThe vacuum level may be set by the user to optimize the freeze dry process.Normally, the sublimation rate will increase if there is less vacuum (a higherpressure) in the Freeze Dryer. A good starting place is to set the vacuum so itslevel is equivalent to about 10°C colder than the eutectic or collapse temperature |
Related manuals for Labconco FreeZone 74200 Series
This manual is suitable for:
manualsdatabase
Your AI-powered manual search engine