Chapter 5: Using Your Freeze Dryer
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Original instructions
Defrosting
After the freeze dry process is complete the ice that has accumulated on the
collector coil must be removed. The Triad Freeze Dry System is equipped with a
rapid defrost feature.
The following procedure should be followed when defrosting the collector coil:
1.
Press the DEFROST button on the Home screen. The defrost indicator
above that button will illuminate. Allow unit to operate in this condition
until all condensate is defrosted from the collector coil. Turn the system off
by pressing DEFROST, then Stop. The defrost function will turn off
automatically if the collector temperature r60°C or if defrost has
been running for 2 hours.
2.
Place the drain hose in a suitable container to collect the condensation.
Remove the drain plug from the drain hose.
3.
Replace drain plug and remove drain pan to dispose of the ice and wipe
dry.
4.
Wipe any excess liquid from inside of vacuum chamber, replace drain pan.
Utilization of acid requires immediate cleaning and
neutralization after defrost or physical damage to the collector
chamber and coil will result.
Do not attempt to chip ice from the collector coil as damage may
occur.
Never attempt to start the vacuum pump when there is liquid in
the collector chamber. This could result in damage to the vacuum
pump.
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
!
