3 Performance specifications
12
Program sequences
Regular sterilization program
A program runs in three phases, the air removal; sterilization; and drying phase. After program start, you
can follow the program run on the display. It shows the chamber temperature and pressure as well as the
time until the end of sterilization / the drying.
Program phase Description
1. The air removal
phase (fractionation)
The air removal phase comprizes the conditioning and the evacuation phase.
During conditioning, steam is repeatedly injected into the sterilization chamber to
generate over-pressure. The mixture of air and steam is then removed
repeatedly (evacuation). This procedure is also called the fractionated pre-
vacuum procedure.
2. Heating phase The heating phase follows the air removal phase. The continued steam
admittance into the chamber leads to an increase in pressure and temperature
which continues until the program-specific sterilization parameters have been
reached.
3. Sterilization phase If the pressure and temperature correspond to the program-dependent nominal
values, the sterilization phase begins. The sterilization time is indicated on the
display.
4. Pressure release The end of the sterilization phase is followed by pressure release of the
sterilization chamber.
5. Drying phase The sterilization material is dried using a vacuum (vacuum drying). The drying
phase begins after the pressure release. Upon program end, the chamber is
filled with sterile air via the air filter and adjusted to the ambient pressure.
6. Ventilation Once the program has come to an end, the chamber pressure is adapted to the
ambient pressure. The corresponding display notification "ventilation" is
displayed.
Vacuum test
The vacuum test serves measurement of the leakage rate. No real sterilization is performed. The test is
performed with a cold, dry and unloaded device.
Program phase Description
1. Air removal phase
(evacuation)
The chamber is evacuated until the pressure for the vacuum test has been
reached.
2. Equilibration time An equilibration time of five minutes will follow.
3. Measurement time The measurement time amounts to ten minutes. The pressure increase within
the chamber is measured during the measurement time. The evacuation
pressure and the equilibration time or measuring times are shown on the
display.
4. Test end The display shows the test results, the batch number, the total number of
batches and the leakage rate
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