Operating the shell freezer – Labconco FreeZone and FreeZone Plus 6, 12 and 18 Liter Freeze Dry Systems 79600 Series User Manual
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Chapter 4: Using Your Freeze Dryer
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6. Press the DEFROST switch, the green LED will be off. Reinstall
the drain hose plug and slide drain hose back into cabinet through
the front panel. Dispose of the liquid appropriately.
Utilization of acid requires immediate cleaning and
neutralization after defrost or physical damage to
the collector chamber and collector coil will result.
Do not attempt to chip ice from the collector coil
as damage may occur to the coil.
Never attempt to start the vacuum pump when there
is liquid in the collector chamber. This could result
in damage to the vacuum pump.
Operating the Shell Freezer
The optional built in shell freezer is designed for shell freezing
samples in flasks in preparation for freeze-drying.
Follow the steps below each time you use the shell freezer to
obtain optimum performance:
1. Check that the solvent bath drain plug is securely installed in
the drain hose.
2. Remove the bath compartment cover and add solvent to the bath
compartment. Commonly used solvents are methanol or ethanol.
Recommended solvent depth is ¼" to ½" above the top of the
rollers (approximately 2 liters).
If flammable solvents are used in the shell freezer
bath, be sure to keep away from open flame.
3. Press the panel switch labeled SHELL FREEZE. The green LED
above the switch will illuminate. The shell freezer refrigeration
module will start and the bath rollers will begin rotating. The
LCD display will show the shell freezer bath temperature.
4. Fill a freeze dry container no more than ½ full with sample and stopper
the container top. Lay the container on the rollers in a horizontal
position. Replace the bath compartment cover during shell freezing.
5. When the sample is completely frozen in the container, remove the
container from the bath compartment and freeze dry the sample or
place it in a suitable storage freezer for future freeze-drying.
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