Page 29 of 56 Pages
4.6
TEST 1 – LEAK TEST
Vacuum is produced in the chamber down to P
1
=17 kPa. 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 P
2
. 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 P
3
.
Operations Sequence
Vacuum is produced into the chamber down to 17kPa.
The vacuum pump stops.
Note: During the test period the autoclave is not heated.
Note: 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
