Chapter 4: Using Your Freeze Dryer
Product Service 816-333-8811 or 1-800-522-7658
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Freeze Dryer Controls
The control panel for the freeze dryer is shown below with a description
about its function.
1.
LCD Display – Displays system operating parameters, set-up parameters
and alarm messages.
2.
Menu Switch – This switch is used to change the display from operating
system parameters to set-up parameters.
3.
Select Switch – Used to select set-up parameters.
4.
Vacuum Switch – Used to start or stop the vacuum pump when operating in
manual start-up mode.
5.
Vacuum Indicator – This green LED indicates that power is being supplied to the
vacuum pump receptacle on the back of the freeze dryer.
6.
Manual Refrigeration Switch – Used to start only the refrigeration module.
7.
Manual Operation Indicator – When lit, the green LED indicates the freeze dryer
is being controlled manually by the operator. Each function must be started by the
operator.
8.
Auto Mode Switch – Used to start or stop the refrigeration and the Auto Mode
process.
9.
Auto Mode Indicator – When lit, the green LED indicates that the freeze dryer is
in Auto Mode. In this mode, the vacuum pump will start when the collector
temperature reaches –40°C.
10.
Vacuum Graph Display – This display indicates the relative system vacuum level.
The highest LED indicates that the vacuum level is above 2.0 mBar. The
indicators will sequence down when the vacuum level reaches 2.0, 1.0, 0.8, 0.6,
0.45, 0.12 mBar. The lower green LED flashes when the system vacuum level is
0.45 to 0.12 mBar and illuminates steadily below 0.133 mBar.
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