User manual

Troubleshooting the VITEK
®
2 Instrument Instrument Diagnostics
VITEK
®
2 Instrument User Manual 8-21
510731-10EN1
• Look for repeated back and forth movement while the saline dispenser
is in the upright position. The saline dispenser tube should move
smoothly up and down when filling each AST tube.
• Look for saline remaining in the saline dispenser tube when it returns
to the upright position.
• Look for a saline stream and/or drops released from the saline
dispenser tube when it is filling with saline.
• Look for a saline stream and/or drops released from the saline
dispenser tube as it returns to the upright position.
• Look for lower volumes of saline while saline is being dispensed,
comparing tubes 2, 4 and 5 to each other.
• Observe the instrument user interface screen for Pipettor Failure 21 or
any Dispenser Failures.
IMPORTANT: Ensure there is no sunlight shining directly on the saline dispenser.
You can continue to use Automatic Dilution Mode if none of the abnormal
conditions are observed.
If you see any of the above abnormal conditions or instrument errors continue
to occur, please discontinue using Automatic Dilution Mode and contact
bioMérieux immediately. You can configure the instrument to use the
Predilution Mode as described in Chapter 5 of this manual.
Dispenser/Pipettor Volumetric Test
This test is not required by bioMérieux as part of the recommended routine
maintenance procedures. This test has been provided for those laboratories
who are required to verify the accuracy of the volumes dispensed by the
Pipettor/Dispenser by regulatory/licensing agencies.
Note: The transport system must be idle to perform this test.
1) Prepare a test cassette with the following items:
• Two test tubes containing 3.0 mL saline, placed in test tube slots
1 and 3.
• Three blank test tubes, placed into test tube slots 2, 4, and 5.
Note: This cassette does NOT require the use of the Smart Carrier Station.
2) Record the weights of the test tubes placed in test tube slots 1, 3, and 5
using Table 8-1.
• Record the weight of the tube in slot 1 in the Pipettor Low Volume
section. Test tube 1 — Before test (B).