Arena Service Manual
9.12 MAINTAINING MINIMUM BACTERIA GROWTH LEVELS
Once bacteria has a chance to establish itself in a system, it is hard
to remove. The best course of action is to prevent colonization and
the subsequent growth before it starts. Table 9-11 lists actions to
prevent bacteria from becoming established.
Table 9-11. Preventing Bacteria Growth
Action Comments
Water treatment system design
and construction
Poor design can lead to continual
bacteria growth.
Routine maintenance Disinfect or replace components
when required.
Monthly cultures Show trends and highlight
problem areas.
Routine disinfection of water
system
Keeps levels under control
Test results and maintenance
records kept up to date
Can show trends and highlight
problem areas
Disinfect Instrument before use. Kills residual bacteria before
patient use
Never expose the Instrument to
tap water.
Tap water will introduce bacteria
to the Instrument's internal fluid
system.
Isolate Instrument from drain. Prevents growth through drain
hose when Instrument is not
operating
Disinfect bicarbonate containers
and dip tubes daily.
Bicarbonate promotes bacteria
growth.
Disinfect acidified concentrate
containers and dip tubes monthly.
Eliminates this bacteria source
Quarterly full-system disinfect Cleans entire Instrument
9-42 157-1278-916, Rev A
March 2004
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