Labconco FreeZone and FreeZone Plus 6, 12 and 18 Liter Freeze Dry Systems 79600 Series - Manual (Page 36)

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Chapter 4: Using Your Freeze Dryer
Product Service: Domestic 1-800-522-7658, International 816-333- 8811
6. Press the SHELL FREEZE switch to turn shell freezer off.
7. If the 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 pull down in temperature.
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 front panel of the unit and then removing the drain
plug. Place the hose in a suitable container to collect the
solvent.
Operating the Vacuum Drying
Chamber
The built-in drying chamber is designed for freeze drying small
samples, either in bulk or in small containers such as vials or 96
well plates. It may be used in conjunction with other drying
accessories that are mounted on top of the Freeze Dryer or
independently. If a manifold or chamber is mounted to the Freeze
Dryer and is not in use, close all of its valves. If no drying
accessory is installed on the Freeze Dryer, place the supplied
stopper in the center of the 3.0 accessory port that is on the top of
the Freeze Dryer to seal the vacuum system. Follow the steps
below to operate the built-in drying chamber.
1. Start the Freeze Dryer. Position the Vacuum Chamber valve
on the top of the Freeze Dryer to the VENT position. Turn on
the refrigeration in the Freeze Dryer in the MAN or AUTO
mode according to the instructions in this manual. If the
sample will be prefrozen in the collector chamber, the Freeze
Dryer must be started in the MAN mode.
2. Set the Drying Chamber temperature according to the Set Up
instructions in this manual. The set temperature should be
lower than the eutectic temperature of the sample.
NOTE: The Drying Chamber is NOT refrigerated. If the
operating temperature is set below ambient, the only source
cooling the chamber is the sample itself.
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