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4.7.
Program 7: Vacuum Test
Vacuum is produced in the chamber, down to P1=2.47psi (0.17bar). At
this stage all the valves close. The autoclave remains in this stage for 5
minutes. This period enables the condition in the chamber to reach
equilibrium. After the 5 minutes have elapsed, the printer records the
pressure that is referred to as P2. At this point the test begins and lasts
10 minutes. At the end of the test, the printer records the results. The
pressure at the end of the test is referred to as P3.
Notes:
During the test period the autoclave is not heated. During the test
period the screen color is purple. If the vacuum test failed, the screen
color changes from purple to yellow. If the vacuum test is completed,
the screen color will remain purple. Even if the vacuum test is
completed, the operator shall check the test results and consider
whether the test results are acceptable or not.
