Labconco FreeZone Triad Freeze Dry System 74000 Series - Manual (Page 18)

Chapter 4: Operating Instructions
Product Service 816-333-8811 or 1-800-522-7658 14
12.
Run/Stop Button: Initiates the start or stop of the lyophilization process.
13.
Run/Stop Indicator: Green INDICATOR burns steadily while freeze drying
is in progress and turns off when the Run/Stop button terminates a run. The
green INDICATOR flashes if freeze drying is in progress and a power failure
occurs.
14.
Stoppering: Controls the stoppering platen up and down movement. The
mechanism will function only while the chamber is under vacuum. The
stoppering action should be closely monitored when operating this control.
15.
Vacuum Release: Vents the chamber so the chamber door can be opened.
This control can also vent gas into the chamber when the gas supply is
properly connected to the backfill port.
16.
Back Fill: A regulated tank of gas may be connected to the port to allow the
introduction of gas into the chamber after freeze drying. The port accepts 1/8"
tubing.
Ethylene Oxide is not recommended for use in this
freeze dry system for decontamination because of its
hazardous and corrosive properties.
17.
Power Switch: Turns all power to Triad Freeze Dry System ON or OFF. (Not
shown). Located on left side of cabinet.
Operation Checklist
The following checklist should be followed prior to each use of your freeze
dry system:
1.
Wipe out the interior of the chamber with a soft cloth or paper towel to
remove any moisture or debris.
2.
Check the collector tray drain hose to ensure that the hose is free of
moisture and that the drain plug is securely installed.
3.
Using a soft, lint-free cloth or paper towel, wipe the door gasket to
remove any dirt and contaminants that could cause a vacuum leak.
Vacuum grease is not required on the door gasket.
4.
Check that each sample valve is closed or in the “vent” position. See
Figure 4.
Vacuum Pump Ballast Setting
Most vacuum pumps are equipped with gas ballast mechanism. The freeze
dry process requires high vacuum. Therefore, it is recommended that the gas
ballast be closed during the operation of the Triad Freeze Dry System.
Note: If the gas ballast is left open for extended periods of operation, the oil
can be pumped out the exhaust, causing the pump to fail.