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Product Service: Domestic 1-800-522-7658, International 816-333-8811
Chapter 4: Using Your Freeze Dryer
Operating the Freeze
Dryer
Automatic Start-Up
Turn the MAIN POWER switch ON and the LCD
display will illuminate. If the unit is equipped with
the optional purge valve, the green annunciator
above the PURGE switch will illuminate indicating
that the purge valves are closed.
To run the Auto Mode press the panel switch
labeled REFRIGERATION AUTO. The green
annunciator above the switch will illuminate. This
will start the refrigeration system. When the
collector reaches –40°C the vacuum pump will
start. If the unit is equipped with the optional
purge valve, the vacuum pump will start two
seconds after the REFRIGERATION AUTO
switch is pressed. The purge valves will be closed,
as indicated by the green annunciator above the
PURGE switch. When the collector reaches
–40
o
C, the purge valves will open.
The LCD display will show the actual temperature
of the collector. When the vacuum in the system is
above 2000 x 10
-3
mBar the vacuum display will
indicate “HI.” At 2000 x 10
-3
mBar and below, the
LCD display will show the actual vacuum.
The Temperature and Vacuum Graph will indicate
collector temperature and system vacuum. When
the system vacuum is between 450 and
133 x 10
-3
mBar, the lower green vacuum graph
LED will flash. When the system vacuum level is
<133 x 10
-3
mBar, the green LED will be lit
steadily indicating that samples may be added.
