Labconco FreeZone Plus 4.5 Liter and FreeZone -105 C Cascade Freeze Dry Systems 73870 Series - Manual (Page 28)

Chapter 4: Using Your Freeze Dryer
Product Service 816-333-8811 or 1-800-522-7658 24
Temperature Out of Range
An alarm activates if the collector temperature rises above –40°C (-60°C for
Models 73820xx). If this occurs, the display shows:
Press and hold SELECT for five seconds until the error message is cleared
from the display.
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 resets 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 shows:
When the collector is drained, the alarm self-cancels.
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.
COLLECTOR TEMPERATURE
HOLD SELECT TO CLEAR IT
CHANGE VACUUM OIL
HOLD SELECT TO CLEAR IT
MOISTURE IN COLLECTOR