Chapter 5: Using Your Freeze Dryer
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40
Original instructions
5.
Ampules may be flame sealed while connected to a valve by using a sealing
torch. Care must be taken not to burn the valve. An insulation material placed
between the valve and the torch is recommended.
Starting a Program
(for optional drying accessories)
If one of the electronically controlled accessory drying chambers, suitable for your
Freeze Dryer, has been properly installed, you will be able to run a program.
BEFORE STARTING A PROGRAM YOU SHOULD ALWAYS ENSURE
THAT THE COLLECTOR IS “ON” AND HAS COOLED TO -40°C OR
BELOW.
1.
Go to the Programs screen. You can access the Programs screen in two
different ways, both lead to the same location.
a.
Directly access the Programs screen by selecting the Programs icon
from the main menu bar at the top of the display.
b.
Go to the Drying Accessory screen, then select the PROGRAM
button at the bottom of the screen.
2.
Select a program from the saved programs list, or create a new program.
3.
With the desired program selected from the list, press the START button.
Shut Down
At the end of a run or when a sufficient amount of condensate accumulates on the
collector coil to obstruct the flow of vapor to the collector chamber, the Freeze
Dryer should be defrosted. Go to Home screen, press VACUUM, then STOP to
turn the vacuum pump OFF. Then release system vacuum by turning the plastic
knob on a valve (that has no sample attached) to the open position or opening the
vent valve on Tray Dryer or Clear Chamber. Press COLLECTOR, then STOP to
turn the refrigeration system OFF.
Defrosting
The following procedure should be followed when defrosting the collector coil:
1.
The hot gas defrost function can be used to speed up the defrosting process.
Defrost can be activated as follows: Go to Home screen, press COLLECTOR
button, press Defrost Options, then press START.
2.
To turn off Defrost: Go to Home screen, press DEFROST button, press STOP.
The defrost function will turn off automatically if the collector temperature
r60°C or if defrost has been running for 2 hours.
3.
If rapid defrost is desired, pour warm water over the collector coil.
Do not
allow the liquid to enter the vacuum port on the upper rear wall of the chamber.
4.
Place the drain hose in a suitable container to collect the condensate from the
collector chamber. Insert the quick connect drain fitting into the quick connect
drain coupling located on the left hand side of the unit.
5.
Flush the collector chamber with water and wipe chamber dry.
