Labconco FreeZone and FreeZone Plus 6, 12 and 18 Liter Freeze Dry Systems 79600 Series - Manual (Page 39)

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Chapter 4: Using Your Freeze Dryer
Product Service Domestic 1-800-522-7658, International 816-333-8811
Service Vacuum Pump
The vacuum pump normally plugs into the vacuum pump electrical
receptacle on the back of the Freeze Dryer. When the Freeze
Dryer has accumulated a total of 1000 operating hours, the alarm
indicator will flash. Press MENU to display the alarm:
Press and hold SELECT for five seconds until the error message is
cleared from the display.
This will reset the 1000 hour timer. It may be necessary to service
the vacuum pump more frequently than every 1000 hours
depending on the operation of the Freeze Dryer. The pump oil
should be regularly monitored to verify that it is clean.
Moisture in Collector
If there is liquid in the collector chamber and either a
REFRIGERATION button or the VACUUM button is pressed,
neither function will start and an alarm will be activated. When
MENU is pressed, the display will show:
When the collector is drained, the alarm will self-cancel.
This feature prevents the inadvertent start of the vacuum pump
when liquid is in the collector and thereby can extend the life of
the vacuum pump. A few drops of liquid may remain in the drain
hose after draining. When the vacuum pump is started these drops
may be sucked into the collector chamber. This is normal.
CHANGE VACUUM OIL
HOLD SELECT TO CLEAR IT
MOISTURE IN COLLECTOR