Labconco FreeZone 6 Liter Benchtop Freeze Dry Systems 77520 Series - Manual (Page 24)

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Chapter 4: Using Your Freeze Dryer
Product Service: Domestic 1-800-522-7658, International 816-333-8811
• To reset the SERVICE HOUR to 0, press SELECT.
• The display will show:
If you want to reset the service hours to 0, continue to hold
SELECT five seconds until hours are reset.
• Press SELECT.
• The display will show the RS-232 data transmission rate.
• To change the rate press and hold SELECT until the
desired time interval is shown. The time between data
transmissions may be set to occur at 10, 30, 60, 300 or 600
second intervals.
• Press SELECT to return to display operating parameters or
after a short delay, the display will automatically switch to
show operating parameters.
Automatic Start-Up
To run the Auto Mode, press the panel switch labeled
REFRIGERATION AUTO. The green LED above the switch will
illuminate. This will start the refrigeration system. When the
collector reaches –40°C, the vacuum pump will start. The
Temperature and Vacuum Graphs will indicate collector
temperature and system vacuum. The LCD display will show the
actual temperature of the collector. When the vacuum in the
system is above 5 mBar the vacuum display will indicate “HI.” At
5 mBar and below, the display will show the actual vacuum.
When the system vacuum is between 0.450 and 0.133 mBar, the
lower green vacuum graph LED will flash. When the system
vacuum level is <0.133 mBar, the green LED will be lit steadily
indicating that most samples may be added.
RS-232 TRANSMISSION RATE
10
SECONDS
VACUUM TOTAL HOUR: XXXX
RESET SERVICE HOUR: ?