Labconco FreeZone 76700 Series, User Manual

Page: 30 / 65

Chapter 4: Using Your Freeze Dryer
Product Service 816-333-8811 or 1-800-522-7658 25
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 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