Alerts - Labconco FreeZone 70020 Series User Manual

Original instructions
6. Disconnect the quick connect drain fitting from the quick connect drain
coupling.

!

Alerts

A number of events may occur during a lyophilization procedure that will cause an
alert to be displayed on the Freeze Dryer touch screen. An audible alarm (beeper)
will also be sounded that will automatically be muted after one minute.
The specific alert type can be identified by observing the message box on the
display. The alert message box and audible alarm can be dismissed by pressing the
"Back" button on the alert message box. The following conditions will initiate an
alert.
Power Fail
If a power failure occurs during a Freeze Dry process, the vacuum control valve
will allow air to bleed into the Freeze Dryer System. If the failure is of a short
duration and the collector does not warm up above -30°C, when power is restored
the Freeze Dryer will restart and resume operation of the refrigeration and vacuum
systems. If the power failure lasts for a longer duration and the collector warms
above safe limits, when the power is restored, the Freeze Dryer will not
automatically restart. This prevents melted sample from being drawn into the
collector and prevents liquid from being drawn into the vacuum pump.
When power is restored, the POWER FAIL alert message will be displayed on the
touch screen and the audible alarm will sound.
Line Voltage Range
If the voltage supplied to the Freeze Dryer varies beyond allowable limits, the
LINE VOLTAGE RANGE alert will be activated. The high and low alarm points
are preset at the factory to correspond to the normal allowable voltage variations
based on the nominal voltage specified for the freeze dryer. Some models may be
Product Service 816-333-8811 or 1-800-522-7658
DISCONNECT THE QUICK CONNECT DRAIN FITTING
BEFORE STARTING THE VACUUM PUMP. FAILURE TO
REMOVE THE FITTING WILL RESULT IN A LARGE
VACUUM LEAK.
Utilization of acid requires immediate cleaning and
neutralization after defrost or physical damage to the collector
chamber and collector coil will result.
Do not attempt to chip ice from the collector coil as damage
may occur to the coil.
Never attempt to start the vacuum pump when there is liquid in
the collector chamber. This could result in damage to the
vacuum pump.
Chapter 5: Using Your Freeze Dryer
41