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4 - Operation
4.3 Daily Checks
Each day several simple system checks should be done.
The following checks should be made:
• C h e c k the temperature readout on the instrument's LCD display.Verify
that the temperature is currently at 35° C ±1.5° C. Also check the
reading on the temperature QC vial. If the readings are not 35° C
±1.5° C, refer to the instructions in Section 7 -Troubleshooting.
• I f you have an optional printer, check its paper supply. If the paper
supply is low or exhausted, replace the paper.
4.4 Entering New Vials
After specimens have been prepared, they should be scanned and placed in the
instrument as soon as possible. However, all BACTEC® fluorescent series instru-
ments (9240, 9120, 9050) have delayed vial positivity criteria that provide for
routine delays caused by vial transport, overnight lab closures, etc. The system
accommodates the following delay conditions:
For Plus Aerobic/F, Plus Anaerobic/F, PEDS Plus/F, and Lytic/10 AnaerobidF Media
Types:
• U p to 20 hours if vials are incubated prior to entry in the instrument, or
+ U p to 48 hours if vials are not incubated (i.e., held at room temperature)
For Standard Aerobic/F and Standard Anaerobic/F Media Types:
• U p to 12 hours if vials are incubated prior to entry in the instrument, or
• U p to 48 hours if vials are not incubated (i.e., held at room temperature)
Before placing vials into the instrument, you should always scan their barcodes
and place them in their assigned stations through the vial entry activity. Certain
media types use different positivity criteria, and the system can only apply these
criteria if the vial label - in which the media type is encoded - is scanned (or the
media type is entered manually). In addition, if the vials are not assigned to their
stations prior to placement in the instrument, they become anonymous vials, and
must be identified before other states (such as positive, negative, etc.) can be
displayed.Anonymous vial identification involves the removal and reinsertion of
vials, which can result in an increase of false positive rates.Therefore anonymous
vial loading into the instrument should be minimized.
There are two ways to enter new vials into the instrument:
• B y scanning the vial barcode when the "barcode scanner ready" icon
appears
♦
B y manually selecting the medium type if the vial barcode cannot be
scanned by pressing the "no barcode" soft key
MA-01();±,-b
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