Labconco FreeZone Benchtop Freezer - Manual (Page 19)

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Product Service: Domestic 1-800-522-7658, International 816-333-8811
Chapter 4: Using Your Benchtop Shell Freezer
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 1/4" to 1/2"
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 main power switch. The top LED will illuminate.
The shell freezer refrigeration module will start and the
bath rollers will begin rotating.
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.
6. Press the main power switch to turn shell freezer off.
7. If the Benchtop Shell Freezer is to be used for cold bath
operation, additional solvent may be added to submerge
small flasks. Do not fill pan more than 2 inches below the
top of the stainless steel pan with vessels submerged.
Allow additional time for larger volumes of solvent to
reach lower temperatures.
8. Always drain flammable solvents from the bath when
the shell freezer is not in use and store the solvent in a
suitable container. This is accomplished by first pulling
the drain hose out of the left side panel of the unit and
then removing the drain plug. Place the hose in a
suitable container to collect the solvent.
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