4-4
P129390-106 Operator Manual Techniques of Sterilisation
4.4 Vacuum Leak Test The Vacuum Leak Test (seeSECTION 6.10.2, VACUUM LEAK TEST ON
PAGE
6-22) measures the integrity of the sealed pressure vessel and
associated piping to assure air is not being admitted to the sterilizer
during the vacuum draw downs.
After running a Leak Test cycle, a value or leak rate will be printed on
the printer tape. This value will help define a trend over a period of
time if the integrity of the system begins to deteriorate (i.e., allowing
air to enter the system). By running a Leak Test cycle daily or weekly,
the operator or maintenance personnel can always monitor the air
tightness of the system and make repairs or adjustments when
necessary.
NOTE: A leak rate of greater than 1.3 mbar (0.4 mmHg) per minute
indicates a problem with the sterilizer that must be addressed.
WARNING – STERILITY
ASSURANCE HAZARD: Load
sterility may be compromised
if the biological indicator or
vacuum leak test indicates a
potential problem. If these
indicators show a potential
problem, refer the situation to
a qualified service technician
before using the sterilizer
further.
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