Labconco FreeZone 6 Liter Benchtop Freeze Dry Systems 77520 Series - Manual (Page 21)

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Chapter 4: Using Your Freeze Dryer
Product Service: Domestic 1-800-522-7658, International 816-333-8811
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.
11. Collector Temperature Graph Display – This display indicates the
temperature of the collector. The highest LED indicates the collector
temperature is warmer than 10°C. The indicators will sequence down
when the temperature reaches 10, 0, -10, -20, -30, -40°C. When the
collector temperature is –40°C or lower the green indicator will light.
12. Alarm Indicator – This red LED indicates that a system alarm has
occurred. Press the Menu Switch to display the alarm message on the
LCD display.
13. Main Power Switch – Turns the Freeze Dryer on or off. (Not shown,
located on the left side of the cabinet.)
Operation Checklist
The following checklist should be followed prior to each use of
your Freeze Dryer:
1. Wipe the interior of the collector chamber with a soft cloth or
paper towel to remove any accumulated moisture.
2. Check the collector chamber drain hose to ensure that the hose
is free of moisture and that the drain plug is securely installed.
The Freeze Dryer will not start if moisture is detected.
3. Using a soft, lint-free cloth or paper towel, wipe the collector
chamber lid gasket to remove any dirt and contaminants that
could cause a vacuum leak. Vacuum grease is not required on
the lid gasket to obtain a proper vacuum seal.
4. Remove the accessory drying chamber or manifold from the
connection port and using a soft, lint-free cloth or paper towel,
wipe the port gasket and sealing surfaces of the drying
chamber/manifold to remove any dirt and contaminants that
could cause a vacuum leak. Reinstall the drying chamber or
manifold on the port. Vacuum grease is not required on the
port gasket to obtain a proper vacuum seal.